High strain rate superplasticity

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August undefined, 2024

WebMay 1, 2009 · For the H-FSP sample, the optimum strain rate for superplasticity was observed to be 1 × 10 −2 s −1. The largest elongation of 890% was achieved at 450 °C and 1 × 10 −2 s −1. Above 450 °C, the superplasticity of the H-FSP sample decreased with increasing the testing temperature (Fig. 3 ). WebJun 1, 2024 · Superplasticity describes a material’s ability to sustain large plastic deformation in the form of a tensile elongation to over 400% of its original length, but is generally observed only at a...

Efficient Coarse‐Grained Superplasticity of a Gigapascal …

WebDec 21, 2024 · Superplasticity is characterized by an elongation to failure of >300% and a measured strain rate sensitivity (SRS), close to 0.5. The superplastic flow is controlled by … 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}. poornanand rathi

Review: achieving superplasticity in metals processed by high …

Web6. T. D. Wang and J. C. Huang, “Analysis on High Strain Rate Superplasticity in 6061/1% Nano SiO 2”, Proc. Workshop between Mainland China and Taiwan on Ceramic and Metal Composites, Chinese Society for Materials Science, Taichung, 2001, p. 20. 7. J. C. Huang, “Recent Achievement in Developing Low Temperature and High Strain Rate 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... WebJul 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. poorna jagannathan child

Analysis of the threshold stress in the Al-Ti alloys exhibiting high ...

Superplasticity - Wikipedia

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... 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 … share my care mountbattenWebFeb 13, 2007 · It is instructive to note that high strain rate superplasticity is defined formally as superplasticity occurring at strain rates at and above 10 −2 s −1 [ 26] so that processing by ECAP and other similar techniques should provide an opportunity for achieving high strain rate superplasticity in a range of materials. share my chart

"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, … " - High strain rate superplasticity

High strain rate superplasticity

WebSep 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. WebPhenomena 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 ...

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WebJun 1, 2024 · Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy … WebJul 5, 2024 · High strain rate superplasticity by FSP. Friction stir processing can be effectively used to process superplastic materials, which are appropriate for …

WebPhenomena and mechanism on superplasticity of duplex stainless steels. ... The duplex sta-inless steels have an attractive combination of excellent high strength with excellent … 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 …

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 … Web6.5 HIGH STRAIN-RATE SUPERPLASTICITY High strain-rate Superplasticity (HSRS) has been deﬁned by the Japanese Standards Association as Superplasticity at strain-rates …

WebThe 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 …

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 300 and 400 °C. Maximum tensile superplastic elongation of 726% was achieved at 400 °C. Beyond 400 °C, a noticeable loss of superplastic response … poornaprajna institute of scientific researchWebApr 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... sharemycare.org.ukWebOct 24, 2024 · The majority of commercial aluminum alloys are superplastic in the range of strain rates of 10 –4 –10 –3 s –1 with elongations of 200–400%. At a strain rate of 10 –2 s –1, the elongation does not exceed 150%, and the strain-rate sensitivity of the flow stress is sharply reduced, which does not make it possible to use sheets for forming. poornarth solutionsWebApr 8, 2024 · The investigation of the superplastic behavior of HEAs is significant since superplastic forming shows a great potential in fabricating complex compon… poorna ramachandran castle rockWebSep 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 … poor nana this is the last strawWebgation 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 share my body and my mind with youWebSuperplasticity 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. share my camera