High strain rate superplasticity

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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 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...

The Microstructure and High-Strain-Rate Superplasticity of the …

WebApr 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... 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}. population of caronport sask

Chapter 3: Table of Contents - Superplastic Forming of Advanced ...

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

High-strain-rate superplasticity of the Al–Zn–Mg–Cu alloys with …

Chapter 119: 13.4 Superplasticity in magnesium alloys

WebOct 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. 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 ... population of carnoWebIt 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 … population of carlyle sask

"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 … " - High strain rate superplasticity

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 ]. WebSuperplasticity at high strain rates in excess of 10 2 s 1, required for viable industry-scale application, has usually only been achieved in low-strength aluminium and magnesium alloys.

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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, C.; Dong, H.; Weng, Y. Dynamic reverse phase transformation induced high-strain-rate superplasticity in low carbon low alloy steels with commercial potential. Sci. Rep. 2024, 7, … 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 …

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... WebOct 1, 1992 · Although the number of ceramics exhibits superplasticity is now quite large, there are gaps in understanding the requirements for superplasticity in ceramics. Also, superplastic behavior at very high strain rates (1 s {sup {minus}1}) in metallic-based materials is an area of increasing research.

WebApr 8, 2024 · The investigation of the superplastic behavior of HEAs is significant since superplastic forming shows a great potential in fabricating complex compon… 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.

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 …

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% … population of carlton mnWebJun 1, 2024 · Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy … shark vertex cordless best buyWebSuperplasticity at high strain rates in excess of 10 2 s 1, required for viable industry-scale application, has usually only been achieved in low-strength aluminium and magnesium … shark versus killer whaleWebHigh Strain Rate Superplasticity High-Strain-Rate Superplasticity. High-strain-rate superplasticity (HSRS) refers to the superplasticity achieved at an... Superplasticity. … shark vertex cordless 1z462hWebSep 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. population of carmyle glasgowWebFeb 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. shark vertex cordless shockWebDec 21, 2015 · High carbon fine-grained (FG) steels (containing 1–2% C in weight %) were observed to exhibit superplasticity at 0.5–0.65 Tm and strain rate of ~10 −4 –10 −3 s 20,21. shark vertex az2002 video reviews