High strain rate superplasticity

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August undefined, 2024

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... WebDec 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.

High Strain Rate Superplasticity - an overview

WebMay 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... 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. graham wa weather today

Metals Free Full-Text High Strain Rate Superplasticity of WE54 …

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, … Web6.5 HIGH STRAIN-RATE SUPERPLASTICITY High strain-rate Superplasticity (HSRS) has been deﬁned by the Japanese Standards Association as Superplasticity at strain-rates … WebPhenomena and mechanism on superplasticity of duplex stainless steels. ... The duplex sta-inless steels have an attractive combination of excellent high strength with excellent … china king in windsor nc

A high-strain-rate superplastic ceramic - PubMed

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 … WebApr 12, 2014 · This strain rate is generally defined as the point of transition to high strain rate superplasticity . For many years, the development of superplasticity in SPD materials was devoted almost exclusively to metals processed by ECAP. The reason is due to the relatively large samples that are easily produced using the ECAP method. china king indiana pa lunch specialWebUltra 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 … china king in reed city mi

"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 and is of great technological interest for the shape-forming of engineering materials. High-strain-rate superplasticity has been … " - High strain rate superplasticity

High strain rate superplasticity

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... 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...

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WebJul 5, 2024 · High strain rate superplasticity by FSP. Friction stir processing can be effectively used to process superplastic materials, which are appropriate for … 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 …

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 ...

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 … 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.

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. graham weatherbeeWebJun 1, 2024 · Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy Ultrahigh high-strain-rate superplasticity in a nanostructured high-entropy alloy … graham weather ashburtonWebMay 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 ). china king in tylerWebSep 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 … graham weather hourlyWebSep 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. graham weatherfordWebHigh-rate superplasticity in an equiatomic medium-entropy VCoNi alloy enabled through dynamic recrystallization of a duplex microstructure of ordered phases. / Sohn, ... Notably, the superplastic behavior is favorable at the high strain rate due to the enhanced DRX activity, leading to the larger elongation with increasing strain rates. ... graham weatherheadWebJun 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. china king in newport news va