But on an important point, he agrees with Mr Maçães and Mr Frankopan: Eurasia's future is likely to be more ductile than fixed and hegemonic.
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Since punching its way through a section of softer, more ductile ice, the rift has followed a predictable pattern—periods of quietude, punctuated by sudden growth spurts—that experts say is typical of ice shelf calving.
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The result is a more ductile and fracture-resistant iron-hydrogen alloy.
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As it decomposes over time, the alloy will slowly become softer and more ductile, and may start to suffer from hydrogen embrittlement.
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PHA is more ductile and less elastic than other plastics, and it is also biodegradable. These plastics are being widely used in the medical industry.
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Tungsten-rhenium alloys are more ductile at low temperature, allowing them to be more easily machined. The high-temperature stability is also improved. The effect increases with the rhenium concentration, and therefore tungsten alloys are produced with up to 27% of Re, which is the solubility limit. Tungsten-rhenium wire was originally created in efforts to develop a wire that was more ductile after recrystallization.
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Mylonite forms in the more ductile regime at greater depths while Blastomylonite forms well past the transition zone and well into the ductile regime, even deeper into the crust.
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Brazing has the advantage of producing less thermal stresses than welding, and brazed assemblies tend to be more ductile than weldments because alloying elements can not segregate and precipitate. Brazing techniques include, flame brazing, resistance brazing, furnace brazing, diffusion brazing, inductive brazing and vacuum brazing.
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These metal composites may be formed by explosion compaction. In a study done on processing Terfenol-D alloys, the resulting alloys created using copper and Terfenol-D had increased strength and hardness values, which supports the theory that the composites of ductile metal binders and Terfenol-D result in a stronger and more ductile material.
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Elemental magnesium is a gray-white lightweight metal, two-thirds the density of aluminium. Magnesium has the lowest melting () and the lowest boiling point of all the alkaline earth metals. Pure polycrystalline magnesium is brittle and easily fractures along shear bands. It becomes much more ductile when alloyed with small amount of other metals, such as 1% aluminium.
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These either merge into the detachment fault at depth or simply terminate at the detachment fault surface without shallowing. The unloading of the footwall can lead to isostatic uplift and doming of the more ductile material beneath. Low angle normal faulting is not explained by Andersonian fault mechanics.Kearey, P., Klepeis, K.A., Vine, F.J. (2009) Global Tectonics (3rd edition).
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Every possible weight-saving measure was incorporated into the design. Most of the aircraft was built of a new top-secret aluminium alloy developed by Sumitomo Metal Industries in 1936. Called "extra super duralumin" (ESD), it was lighter, stronger and more ductile than other alloys (e.g. 24S alloy) used at the time, but was prone to corrosive attack, which made it brittle.
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These two factors have made the crust more ductile. The basin topography of the craters would be subjected to greater stress due to self- gravitation. Such stress would drive crustal flow and therefore decay of relief. The giant impact basins are the exceptions that have not experienced viscous relaxation, as crustal thinning has made the crust too thin to sustain sub-solidus crustal flow.
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A widely used zinc alloy is brass, in which copper is alloyed with anywhere from 3% to 45% zinc, depending upon the type of brass. Brass is generally more ductile and stronger than copper, and has superior corrosion resistance. These properties make it useful in communication equipment, hardware, musical instruments, and water valves. alt=A mosaica pattern composed of components having various shapes and shades of brown.
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A 1:10 ratio between the thickness of competent beds and the length appears to be the threshold required for the formation of chevron folds. Smaller ratios require too much flow in the more ductile layers. Given high length to thickness and low high-competency to low-competency thickness ratios, irregularities in the thickness of the high-competence beds can be accommodated. However, local features appear as a consequence.
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Uniformity - The zinc coating surrounding the wire is tightly bonded to the steel and uniformly distributed; weak spots on the wire will not be found. Ductility - Bethanizing steel with 99.9 percent zinc, bonds them together tightly without any room for layers of zinc iron alloy. Zinc iron alloy is a brittle substance that induces cracking, leaving steel at critical points exposed. The zinc coating is more ductile and less brittle.
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It also has the highest boiling point, at . Its density is 19.25 times that of water, comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw.
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Alloy wheel on a Mercury Grand Marquis In the automotive industry, alloy wheels are wheels that are made from an alloy of aluminium or magnesium. Alloys are mixtures of a metal and other elements. They generally provide greater strength over pure metals, which are usually much softer and more ductile. Alloys of aluminium or magnesium are typically lighter for the same strength, provide better heat conduction, and often produce improved cosmetic appearance over steel wheels.
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Brass is generally more ductile and stronger than copper and has superior corrosion resistance. These properties make it useful in communication equipment, hardware, musical instruments, and water valves. Other widely used alloys that contain zinc include nickel silver, typewriter metal, soft and aluminium solder, and commercial bronze. Alloys of primarily zinc with small amounts of copper, aluminium, and magnesium are useful in die casting as well as spin casting, especially in the automotive, electrical, and hardware industries.
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Very aggressive environments require novel materials approaches in order to combat declines in mechanical properties over time. One method researchers have sought to use is introducing features to stabilize displaced atoms. This can be done by adding grain boundaries, oversized solutes, or small oxide dispersants to minimize defect movement. By doing this, there would be less radiation-induced segregation of elements, which would in turn lead to more ductile grain boundaries and less intergranular stress corrosion cracking.
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For example, if K_c is high, then it can be deduced that the material is tough, whereas if \sigma_Y is high, one knows that the material is more ductile. The ratio of these two parameters is important to the radius of the plastic zone. For instance, if \sigma_Y is small, then the squared ratio of K_C to \sigma_Y is large, which results in a larger plastic radius. This implies that the material can plastically deform, and, therefore, is tough.
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Based on the standard polyvinyl chloride material, three other variants are in use. One variant called OPVC, or PVCO,represents an important landmark in the history of plastic pipe technology. This molecular-oriented bi-axial high performance version combines higher strength with extra impact resistance. A ductile variant is the MPVC, polyvinyl chloride modified with acrylics or chlorinated PE. This more ductile material with high fracture resistance is used in higher-demand applications where resistance against cracking and stress corrosion is important.
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Ceramic materials are usually ionic or covalent bonded materials, and can be crystalline or amorphous. A material held together by either type of bond will tend to fracture before any plastic deformation takes place, which results in poor toughness in these materials. Additionally, because these materials tend to be porous, the pores and other microscopic imperfections act as stress concentrators, decreasing the toughness further, and reducing the tensile strength. These combine to give catastrophic failures, as opposed to the more ductile failure modes of metals.
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Pure platinum is a lustrous, ductile, and malleable, silver-white metal. Platinum is more ductile than gold, silver or copper, thus being the most ductile of pure metals, but it is less malleable than gold.CRC press encyclopedia of materials and finishes, 2nd edition, Mel Schwartz, 2002Materials handbook, fifteenth edition, McGraw-Hill, by John Vaccari, 2002 The metal has excellent resistance to corrosion, is stable at high temperatures and has stable electrical properties. Platinum does oxidize, forming PtO2, at 500 °C; this oxide can be easily removed thermally.
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Osmium–iridium is used for compass bearings and for balances. Their resistance to arc erosion makes iridium alloys ideal for electrical contacts for spark plugs, and iridium-based spark plugs are particularly used in aviation. Pure iridium is extremely brittle, to the point of being hard to weld because the heat-affected zone cracks, but it can be made more ductile by addition of small quantities of titanium and zirconium (0.2% of each apparently works well). Corrosion and heat resistance makes iridium an important alloying agent.
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It has about twice the strength of pure Mo, and is more ductile and more weldable, yet in tests it resisted corrosion of a standard eutectic salt (FLiBe) and salt vapors used in molten salt reactors for 1100 hours with so little corrosion that it was difficult to measure. Other molybdenum-based alloys that do not contain iron have only limited applications. For example, because of its resistance to molten zinc, both pure molybdenum and molybdenum-tungsten alloys (70%/30%) are used for piping, stirrers and pump impellers that come into contact with molten zinc.
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Similar Type II hybrid masonry, Type III hybrid masonry has the vertical confinement. In addition to the vertical contact with the beam, contact with the columns is also used for horizontal confinement. Shear studs are welded on the insides of the columns to transfer vertical forces that are the result of axial load in the columns as well as shear in the wall. The wall system resembles infill masonry in terms of confinement in the steel, yet differs in that it is grouted and reinforced, allowing for a more ductile response.
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Sample of monzonite from the Ortiz porphyry belt The main belt extends from the Cerrillos Hills in the north through the Ortiz Mountains to the San Pedro Mountains () and South Mountain (). Cerro Pelon () is also geologically a part of the belt. Each of the clusters of mountains is a laccolith where magma intruded between sedimentary rock beds and cooled to form a dome-shaped body of rock. Magma preferentially intruded along bedding planes in the country rock, particularly in more ductile beds such as shales of the Chinle Formation or Mancos Shale.
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The details of the process depend on the type of metal and the precise alloy involved. In any case the result is a more ductile material but a lower yield strength and a lower tensile strength. This process is also called LP annealing for lamellar pearlite in the steel industry as opposed to a process anneal, which does not specify a microstructure and only has the goal of softening the material. Often the material to be machined is annealed, and then subject to further heat treatment to achieve the final desired properties.
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The presence of water plays a crucial role in the mechanical behavior of natural fibers. Hydrated, biopolymers generally have enhanced ductility and toughness. Water plays the role of a plasticizer, a small molecule easing passage of polymer chains and in doing so increasing ductility and toughness. When using natural fibers in applications outside of their native use, the original level of hydration must be taken into account. For example when hydrated, the Young’s Modulus of collagen decreases from 3.26 to 0.6 GPa and becomes both more ductile and tougher.
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The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen. However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material. Some materials break very sharply, without plastic deformation, in what is called a brittle failure. Others, which are more ductile, including most metals, experience some plastic deformation and possibly necking before fracture.
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Two end-member models have been proposed to explain the deformation observed in central Asia. England and Houseman (1986) proposed a numerical model to predict deformation processes for a "soft Tibet," treating Tibet as a thin viscous sheet. In this model, continental lithosphere is presumed to be more ductile, and growth of the Tibetan Plateau would be caused by continuous crustal thickening due to the convergence of the Indian and Eurasian plates. Reactivation along the BNS would occur as a series of many small faults along the boundary of the suture zone.
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Dryland conditions have continued since the end of the Cretaceous, through the Cenozoic and the Laramide orogeny uplifted the Rocky Mountains through the Eocene. Wyoming has numerous Laramide orogeny-related thrust faults, which form the Wind River Range, Bighorn Range and Laramie Range, with more ductile sedimentary rocks folded over Precambrian igneous rocks at the core of each range. This foreland deformation is particularly visible in Clarks Fork Canyon, the Beartooth Range and the Gros Ventre Range. Large quantities of oil and gas are held beneath the anticline formations formed by the west dipping, low angle faults of the overthrust belt.
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The overlying Pipe Rock Member is a distinctive quartz arenite with many white weathering skolithos trace fossils that act as strain markers in areas of more ductile deformation. The uppermost two parts of the Ardvreck Group form the An t-Sron Formation, with the dolomitic Fucoid Beds Member being overlain by the quartz arenites of the Salterella Grit Member. The succeeding Durness Group consists mainly of dolomites, with some limestone and chert. The distinctive character of this sequence enabled detailed mapping, even in areas of relatively poor exposure and allowed sections repeated by thrusting to be recognised.
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Generally, beta-phase titanium is the more ductile phase and alpha-phase is stronger yet less ductile, due to the larger number of slip planes in the bcc structure of the beta-phase in comparison to the hcp alpha-phase. Alpha-beta-phase titanium has a mechanical property which is in between both. Titanium dioxide dissolves in the metal at high temperatures, and its formation is very energetic. These two factors mean that all titanium except the most carefully purified has a significant amount of dissolved oxygen, and so may be considered a Ti–O alloy.
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Sockets for use with an impact wrench or impact driver are expected to receive higher torques, which is also percussive, and so need to be made of tougher materials. They are made from a thicker, tougher and more ductile alloy steel, often using CrMo steel to replace the CrV steel used in non-impact sockets. Most impact sockets made for "standard" hexagonal fasteners have a six-point design. Chrome plated sockets are not suitable as the impact wrench may break the chrome plating, which can form razor sharp flakes - consequently impact sockets use different coatings - often a black phosphate conversion coating, or black oxide.
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The rupture will also propagate down the fault plane, in many cases reaching the base of the seismogenic layer, below which the deformation starts to become more ductile in nature. Propagation may take place on a single fault, but in many cases the rupture starts on one fault before jumping to another, sometimes repeatedly. The 2002 Denali earthquake initiated on a thrust fault, the Sutsina Glacier Thrust, before jumping onto the Denali Fault for most of its propagation before finally jumping again onto the Totschunda Fault. The rupture of the 2016 Kaikoura earthquake was particularly complex, with surface rupture observed on at least 21 separate faults.
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Normalization is an annealing process applied to ferrous alloys to give the material a uniform fine-grained structure and to avoid excess softening in steel. It involves heating the steel to 20–50 °C above its upper critical point, soaking it for a short period at that temperature and then allowing it to cool in air. Heating the steel just above its upper critical point creates austenitic grains (much smaller than the previous ferritic grains), which during cooling, form new ferritic grains with a further refined grain size. The process produces a tougher, more ductile material, and eliminates columnar grains and dendritic segregation that sometimes occurs during casting.
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Building techniques that are more ductile than brittle, like the contained earth type of earthbag, or tire walls of earthships, may better avoid collapse than brittle unreinforced earth. Contained gravel base courses may add base isolation potential. Wall containment can be added to techniques like adobe to resist loss of material that leads to collapse.Blondet, Marcial, G. Villa Garcia M., S. Brzev and A. Rubinos (2011) Earthquake Resistant Construction of Adobe Buildings: A Tutorial Earthquake Engineering Research Institute Confined masonry is effective for adobe against quake forces of 0.3 gSan Bartolome, A., E. Delgado and D. Quiun (2009) Seismic Behavior of a Two Story Model of Confined Adobe Masonry.
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Metal foil resistor In 1960 Felix Zandman and Sidney J. SteinA New Precision Film Resistor Exhibiting Bulk Properties presented a development of resistor film of very high stability. The primary resistance element of a foil resistor is a chromium nickel alloy foil several micrometers thick. Chromium nickel alloys are characterized by having a large electrical resistance (about 58 times that of copper), a small temperature coefficient and high resistance to oxidation. Examples are Chromel A and Nichrome V, whose typical composition is 80 Ni and 20 Cr, with a melting point of 1420° C. When iron is added, the chromium nickel alloy becomes more ductile.
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For many alloys, including carbon steel, the crystal grain size and phase composition, which ultimately determine the material properties, are dependent on the heating rate and cooling rate. Hot working or cold working after the annealing process alters the metal structure, so further heat treatments may be used to achieve the properties required. With knowledge of the composition and phase diagram, heat treatment can be used to adjust from harder and more brittle to softer and more ductile. In the case of ferrous metals, such as steel, annealing is performed by heating the material (generally until glowing) for a while and then slowly letting it cool to room temperature in still air.
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Other high- permeability nickel–iron alloys such as permalloy have similar magnetic properties; mu-metal's advantage is that it is more ductile, malleable and workable, allowing it to be easily formed into the thin sheets needed for magnetic shields. Mu-metal objects require heat treatment after they are in final form—annealing in a magnetic field in hydrogen atmosphere, which increases the magnetic permeability about 40 times. The annealing alters the material's crystal structure, aligning the grains and removing some impurities, especially carbon, which obstruct the free motion of the magnetic domain boundaries. Bending or mechanical shock after annealing may disrupt the material's grain alignment, leading to a drop in the permeability of the affected areas, which can be restored by repeating the hydrogen annealing step.
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Schematic cutaway view of a diffusion hardened metal gear Diffusion hardening is a process used in manufacturing that increases the hardness of steels. In diffusion hardening, diffusion occurs between a steel with a low carbon content and a carbon-rich environment to increase the carbon content of the steel and ultimately harden the workpiece. Diffusion only happens through a small thickness of a piece of steel (about 2.5 μm to 1.5 mm), so only the surface is hardened while the core maintains its original mechanical properties. Heat treating may be performed on a diffusion hardened part to increase the hardness of the core as desired, but in most cases in which diffusion hardening is performed, it is desirable to have parts with a hard outer shell and a more ductile inside.
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In the opposite case, if fibres tend to dispose perpendicular to the loading direction, the resin contributes more to the load bearing, and the overall composite will be less stiff, less strong and more ductile. Being based on hydrodynamic transport phenomena, however, the control over fibre orientation in CF-SMC is much more limited than in the continuous composites case, where orientation is often directly determined accurately by the manufacturer. In addition, while continuous fibres composites have a specific orientation, short fibre reinforced plastics can have a preferential orientation, meaning that, considering a generic system of axis, the majority of fibres can have a higher component along a direction and a lower component along the other two axis. Comparison of the accurate fibre orientation in a laminate of UD plies (a) and the preferential orientation achievable with CF- SMC (b).
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STS was used as homogeneous armor that was less than thick; homogeneous armor for gun mounts and conning towers, where the thicknesses were considerably greater, used Bureau of Ordnance Class "B" armor which had similar protective properties as STS. Somewhat more ductile than the average for any similar armor, even Krupp's post-World War I "Wotan weich" armor, STS could be used as structural steel, whereas traditional armor plate was entirely deadweight. STS was expensive, but the United States could afford to use it, lavishly, and did so on virtually every class of warship constructed from 1930 through the World War II era, in thicknesses ranging from bulkheads to splinter protection to armored decks to lower armor belts. After World War II, the Bureau of Ships conducted a research program for developing a high strength steel for ship and submarine construction.
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To restore the workability, the silversmith would anneal the piece—that is, heat it to a dull red and then quench it in water—to relieve the stresses in the material and return it to a more ductile state. Hammering required more time than all other silver manufacturing processes, and therefore accounted for the majority of labor costs. Silversmiths would then seam parts together to create complex and artistic items, sealing the gaps with a solder of 80 wt% silver and 20 wt% bronze. Finally, they would file and polish their work to remove all seams, finishing off with engraving and stamping the smith's mark. The American revolutionary Paul Revere was regarded as one of the best silversmiths from this “Golden Age of American Silver.” Following the Revolutionary War, Revere acquired and made use of a silver rolling mill from England. Not only did the rolling mill increase his rate of production--hammering and flattening silver took most of a silversmith’s time--he was able to roll and sell silver of appropriate, uniform thickness to other silversmiths. He retired a wealthy artisan, his success partly due to this strategic investment.
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