5083铝合金在400℃的超塑性变形行为和硬化特征
Superplastic Deformation Behavior and Hardening Characteristic of 5083 Aluminum Alloy at 400℃
摘 要
为研究5083铝合金在5005083铝合金;拉伸试验;超塑性;应变硬化;应变速率敏感性以下的超塑性,在400℃进行了恒应变速率拉伸试验,获得了应变硬化指数n及应变速率敏感性指数m,分析了应变速率对伸长率δ,n和m值的影响.结果表明:在400℃时5083铝合金可获得的最大伸长率为278%,对应的=0.000 26 s-1,n=0122,m=0.274;n随应变速率增大而减小,δ和m随应变速率增大先增大后减小,其中δ受应变速率影响显著.
拉伸试验
超塑性
应变硬化
应变速率敏感性
5083 aluminum alloy
tensile test
superplasticity
strain hardening
strain rate sensitivity
Abstract
To investigate the superplasticity of 5083 aluminum alloy below 500℃,constant-strain-rate tensile tests were performed at 400℃.The strain hardening exponent n and strain rate sensitivity index m were obtained.And the influence of strain rate on elongation δ,n and m was analyzed.The results indicate that the maximum elongation of 5083 aluminum alloy at 400℃ was 278% at constant strain rate 0.000 26 s-1,n=0.122 and m=0274.The increase of strain rate caused n decreasing and peak values of δ and m.The effect of on δ was obvious.
中图分类号 TG146.2
所属栏目 材料性能及其应用
基金项目
收稿日期 2008/7/4
修改稿日期 2008/12/18
网络出版日期
作者单位点击查看
备注徐雪峰(1983-),男,江西上饶人,博士研究生.
引用该论文: XU Xue-feng,TONG Guo-quan. Superplastic Deformation Behavior and Hardening Characteristic of 5083 Aluminum Alloy at 400℃[J]. Materials for mechancial engineering, 2009, 33(7): 45～47
徐雪峰,童国权. 5083铝合金在400℃的超塑性变形行为和硬化特征[J]. 机械工程材料, 2009, 33(7): 45～47
被引情况:
【1】葛永成,徐雪峰,张杰刚, "5083铝合金的高温应变速率循环超塑性",机械工程材料 38, 97-100(2014)
【2】雷欣,聂祚仁,黄晖,文胜平, "织构对含铒铝合金疲劳裂纹扩展行为的影响",机械工程材料 39, 11-15(2015)
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参考文献
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【3】时张杰.铝合金超塑性差温拉深研究[D].南京:南京航空航天大学,2007.
【4】林兆荣.金属超塑性成形原理及应用[M].北京:航空工业出版社,1990:42-43.
【5】吴诗惇.金属超塑性变形理论[M].北京:国防工业出版社,1997:61.
【6】宋玉泉,程永春,王习文.拉伸变形应变硬化指数的实验测量及其精细分析[J].中国科学(E),2001,31(3):193-202.
【7】宋玉泉,管志平,马品奎,等.拉伸变形应变硬化指数的理论和实验规范[J].金属学报,2006,42:673-680.
【8】HAMILTON C H,GOSH A K.Mechanical behaviour har-dening characteristics of a superplastic Ti-6Al-4V alloy[J].Metallurgical Transactions A :Physical Metallurgy and Ma-terials Science,1979,10(6):699-706.
【9】KHALEEL M A,SMITH M T,PITMAN S G.Effect of strain rate history on the ductility in superplastic AA-5083[J].Scripta Materialia,1997,37(12):1909-1915.
【10】URDANPILLETA M,MARTINEZ-EZNAOLA J M,SEVILLANO J G.Strain rate sensitivity of superplastic Inconel 718[J].Materials Transactions,2005,46(7):1711-1719.
【11】TONG G Q,LIN Z R.On the strain rate sensitivity index and grain boundary glassy phase of superplastic 3T-ZP[J].Chinese Journal of Materials Research,1998,12(2):144-148.
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