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Effect of Concurrent Pulse in Holding Duration on Superplasticity of 2091Al-Li AlloyZhiyi LIU Jianzhong CUI Guangrun BAI Metal Forming Department,Northeastern University,Shenyang,110006,China摘 要:<正> The effects of concurrent pulses in holding duration on superplasticity of 2091 Al-Li alloy have beeninvestigated in this paper.The results......
High Strain Rate Superplasticity in a Micro-grained Al-Mg-Sc Alloy with Predominant High Angle Grain BoundariesF.C. Liu 1,2) , Z.Y. Ma 1) and F.C. Zhang 2) 1) Shenyang National Laboratory...-Mg-Sc exhibited enhanced superplastic deformation kinetics compared to that predicted by the constitutive relationship for superplasticity in fine-grained aluminum alloys. The origin for enhanced......
developed by using Gleeble test data show three domains in the tested range. Superplasticity, marked by abnormal elongation at 700 ℃, occurs in the temperature range of 650-750 ℃ and at strain rates below about 0.03 s-1. Large grain superplasticity takes place in the temperature range of 750-850 ℃ and strain rates range of 0.001-0.03 s-1. Dynamic recrystallization occurs in the temperature range......
Investigation on Superplasticity in SiC_p/2024 Cold Rolling Sheet after Heat TreatmentBolu XIAO, Zongyi MA and Jing BI1) Institute of Metai Research, Chinese Academy of Sciences, Shenyang 110016, China2) Department of Metallurgical Engineering, University of Missouri Rolla, Rolla MO 65401, USA摘 要:<正> High strain rate superplastic deformation......
excellent superplasticity. The elongation rate reaches 617% under the condition of 1 200 ℃ temperature and 2×10-4 s-1 deformation rate. Key words: Ti3Al based alloy sheet; microstructures; mechanical properties; superplasticity Ti3Al基合金具有低密度,高比强度及优异的高温性能,是航空,航天飞行器理想的轻质高温结构材料,具有广泛的应用前景.其作为结构材料可在650~700 ℃长期使用,短时使用温度可达700~900 ℃,至今所发展的基于Ti-(22~25)Al-(8~27)Nb成分Ti3Al基合金已具有工程意义,材料的性能大多随Nb质量分数的提高而得到改善[1-5]. 目前......
Forum, 2002, 396/402: 1145-1150. [24] KAIBYSHEV R, AVTOKRATOVA E, APOLLONOV A, DAVIES R. High strain rate superplasticity in an Al-Mg-Sc-Zr alloy subjected to simple thermomechanical processing[J... in ultrafine-grained Al-Mg alloys [J]. Acta Materialia, 2002, 50: 553-564. [26] DUAN Yu-lu, XU Guo-fu, XIAO Dan, ZHOU Li-qi, DENG Ying, YIN Zhi-min. Excellent superplasticity and deformation......
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