High strain rate superplasticity
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 ]. Webgation of 380% at 793K and at a high strain rate of Figure 1 (a) SEM micrograph and (b) TEM micrograph of as-extruded PM Al-16Si-5Fe based alloy. ... mechanism of superplasticity. The rapidly solidified Al-16Si-5Fe alloy powders ... tial strain rate ranges from 1.4£10 ¡4 to 7£10 1 s¡1 at 723, 783 and 793 K. The specimen was heated with
High strain rate superplasticity
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WebAug 23, 2024 · The largest superplasticity (ΔL/L 0 > 1100%) is obtained at about 800 °C and at strain rate of 10 −3 s −1, which is related to m value of 0.38–0.52. Our experimental results show that dynamic... WebPhenomena and mechanism on superplasticity of duplex stainless steels. ... The duplex sta-inless steels have an attractive combination of excellent high strength with excellent …
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 … WebJun 28, 2024 · They possess high-strain-rate sensitivity “m” value, approximately, equal to 0.5 at the temperature of 0.5 times the melting point and at a strain rate of 10−3 to 10−4 s−1. Ultrafine grains (100 nm to less than 1 μm) exhibit superplasticity at high strain rate as well as at low temperature when compared to fine grain materials.
WebOct 1, 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... The properties of ceramic materials, like all materials, are dictated by the types of atoms present, the types of bonding between the atoms, and the way the atoms are packed together. This is known as the atomic scale structure. Most ceramics are made up of two or more elements. This is called a compound. For example, alumina (Al2O3), is a compound made up of aluminium atoms and oxygen atoms.
WebSuperplasticity is a process in which polycrystalline materials undergo several hundred to several thousand percent of tensile elongation at an appropriate temperature and strain rate. It is greatly effective in reducing the weight and production cost by minimizing the processing steps of machining and joining. theoryreaderWeb6.5 HIGH STRAIN-RATE SUPERPLASTICITY High strain-rate Superplasticity (HSRS) has been defined by the Japanese Standards Association as Superplasticity at strain-rates … shscherfeld gmail.comWebUltra 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 … theoryreader goanimateWebSep 15, 2024 · An unusually high strain rate sensitivity, m, of 0.43 ± 0.02 was obtained by using nanoindentation creep test in the same temperature region, indicating that superplasticity can be expected at low temperatures. Samples were deformed by tension at different strain rates and different temperatures lower than 0.5 × Tm. theory racingWebPhenomena and mechanism on superplasticity of duplex stainless steels. ... The duplex sta-inless steels have an attractive combination of excellent high strength with excellent corrosion resistance, thus they are suitable for constmctional and petrochemical applications . Furthermore, the duplex stainless steels having free grained ... theory readWebApr 1, 2015 · High strain rate superplasticity in oxide ceramics April 2015 Scientia Sinica Technologica 10.1360/N092014-00193 Authors: Yufei Zu Dalian University of Technology Guo-Qing Chen Dalian University... theory rcm examWebUltra 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 … theory rain jacket