High strain rate superplasticity
WebJul 26, 2024 · The specimens for the constant strain rate high-temperature tensile tests were cut from the received material by a Wire Cut Electrical Discharge Machining ... Wang, … WebJun 26, 2024 · Doping TiO 2 and MgO into ZrO 2 can achieve a large strain of 206% at a higher strain rate of 1.2 × 10 −4 s −1 and a relatively lower temperature of 1350 °C . Ti/Mn co-doped Al 2 O 3 with 3 mol. % ZrO 2 can be shape-formed to 100% strain at a temperature as low as 1280 °C [ 16 ].
High strain rate superplasticity
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WebMar 1, 1992 · This phenomenon, presently designated 'high strain rate superplasticity' (HSRS), has been reported in alloys, metal-matrix composites (MMCs), and mechanically-alloyed materials; all materials exhibiting HSRS have extremely fine, about 1-micron grain size, and the phenomenon is observed at high homologous matrix temperatures that are … WebFeb 1, 1999 · Based on the obtained results, the role of the liquid phase in the high-strain-rate superplasticity is discussed. The sample was Al-Mg (5052) alloy reinforced with 20vol% Si 3 N 4 particles, fabricated by a powder metallurgy process. The sample showed an excellent superplasticity under the conditions given in Table 1.
WebSep 1, 2024 · During high-strain-rate superplastic deformation, superplasticity indices, and the microstructure of two Al–Zn–Mg–Cu–Zr alloys with additions of nickel and iron, which contain equal volume fractions of eutectic particles of Al3Ni or Al9FeNi, have been compared. It has been shown that the alloys exhibit superplasticity with 300–800% … WebUltra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress …
WebFeb 19, 2024 · The results demonstrate that the alloy reached a high coarse-grained superplasticity greater than ≈440% at a high strain rate of 10 −2 s −1 at 1173 K and with a gigapascal residual strength. A consecutively triggered deformation mechanism that sequences of dislocation slip, dynamic recrystallization, and grain boundary sliding in … WebNov 25, 2024 · The processed materials exhibited high resistance at room temperature and excellent superplasticity at the high strain rate of 10 −2 s −1 and temperatures between …
WebDec 31, 1997 · High strain rate superplasticity (HSRS) has been investigated at 600-650 C and strain rate of 10 {sup -3}-10 {sup 0} sec {sup -1} in tension, and total elongation of 300 - 500% was observed at strain-rate of 10 {sup -1} sec {sup -1}.
WebIt is often thought that superplasticity is only found at relatively low strain rates, typically about 10 –4 to 10 –3 s –1. Several recent studies have indicated, however, that … diaper and wipes comboWebJul 15, 1995 · High strength and high strain rate superplasticity in a Mg-Mg {sub 2}Si composite Full Record Related Research Abstract Magnesium alloys have high potential as structural materials because of low density. Recently, it was shown that magnesium composite containing. diaper and wipes raffle printableWebThe plastic strain rate is given by. (16.13) where λ is the plastic multiplier, and ψ is the direction of the strain increment derived from the plastic potential. An associated model … citibank home depot canadaWebMay 1, 2024 · The superplastic deformation behavior in a strain rate range of 1 × 10⁻² to 1 × 10⁻¹ s⁻¹ and the associated strain-induced changes in the grain structure and mechanical properties of the... diaper and wipes registryWebSep 20, 2001 · High-strain-rate superplasticity describes the ability of a material to sustain large plastic deformation in tension at high strain rates of the order of 10-2 to 10-1 s-1 and is of great technological interest for the shape-forming of engineering materials. High-strain-rate superplasticity has been … citibank home equity loansWebSep 20, 2001 · High-strain-rate superplasticity describes the ability of a material to sustain large plastic deformation in tension at high strain rates of the order of 10-2 to 10-1 s-1 … citibank home foreclosures for saleWebUltra fine-grained metals can show exceptional ductility, known as superplasticity, during sheet forming. The higher ductility of superplastic metals makes it possible to form large and complex components in a single operation without joints or rivets. The result is less waste, lower weight and manufacturing costs, high precision and lack of residual stress … citibank home improvement loan