应变速率对时效态GH4199合金拉伸变形行为的影响
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- 英文论文题名：Influence of Strain Rate on Tensile Deformation Behavior of GH4199 Superalloy After Aging
- 论文作者：王冉 ; 王磊 ; 晋俊超 ; 刘杨 ; 宋秀
- 英文论文作者：Wang Ran ; Wang Lei ; Jin Junchao ; Liu Yang ; Song Xiu ; Key Laboratory for Anisotropy and Texture of Materials ; Ministry of Education ; Northeastern University
- 年：2015
- 作者机构：东北大学材料各向异性与织构教育部重点实验室;
- 论文关键词：GH4199合金 ; 应变速率 ; 拉伸性能 ; 变形行为
- 英文论文关键词：GH4199 alloy ; strain rate ; tensile properties ; deformation behavior
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG132.3
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：5
- 文件大小：3216k
- 原文格式：O
- 会议级别：全国
摘要
研究了应变速率对时效态GH4199合金显微组织和拉伸变形行为的影响规律,并探讨了作用机制。结果表明,随应变速率的增加,时效态GH4199合金抗拉强度和屈服强度均提高;断裂伸长率先缓慢下降、后急剧增加。当应变速率较低为10~(-3)s~(-1)时,位错绕过尺寸小间距大的γ′相;随着γ′相尺寸的长大,位错以攀移方式越过γ′相。当应变速率为10~1s~(-1)时,位错仍能切过γ′相,且随应变速率的增加,被切过的γ′相尺寸逐渐增大。
The influence of strain rate on microstructure and tensile deformation behavior of GH4199 alloy after aging was studied in this paper.The results show that,tensile strength and yield strength of GH4199 alloy after aging increases with the strain rate growing,while fracture elongation have a fluctuation change,decreasing slowly first and then increasing rapidly.Dislocations pass fine γ' particles and escalade γ' particles which are bigger.With a strain rate of 10~1s~(-1),dislocations can incise the finest γ' particles,and the size of γ' particles incised by dislocations gets bigger with the strain rate growing.
The influence of strain rate on microstructure and tensile deformation behavior of GH4199 alloy after aging was studied in this paper.The results show that,tensile strength and yield strength of GH4199 alloy after aging increases with the strain rate growing,while fracture elongation have a fluctuation change,decreasing slowly first and then increasing rapidly.Dislocations pass fine γ' particles and escalade γ' particles which are bigger.With a strain rate of 10~1s~(-1),dislocations can incise the finest γ' particles,and the size of γ' particles incised by dislocations gets bigger with the strain rate growing.
引文
[1]Simetal C T,Stoloff N S,et al.Superalloys E-High temperature Materials for Aerospace and Industrial Power[M].New York;Wiley-Inter.Science,1987.
[2]师昌绪,陆达,等.中国高温合金四十年[M].北京:中国科学技术出版社,1996.
[3]Lee W S,Lin C F.Plastic deformation and fracture behavior of Ti-6A1-4V alloy loaded with high strain rate under various temperatures[J].Materials Science and Engineering,1988,A241:48~59.
[4]Smerd R,Winker S,et al.High strain rate tensile testing of automotive aluminum alloy sheet[J].International Journal of Impact Engineering,2005,32;541~560.
[5]李国和,王敏杰,等.高温高应变率动态力学性能及其本构关系[J].材料科学与工艺,2010,18:824~828.
[6]王磊,刘杨,等.动态载荷对长期时效GH4169合金拉伸变形行为的影响[J].钢铁研究学报,2011,23:213~216.
[7]刘杨,王磊,等.长期时效对GH4169合金动态拉伸变形行为的影响[J].金属学报,2012,48(1):49~55.
[2]师昌绪,陆达,等.中国高温合金四十年[M].北京:中国科学技术出版社,1996.
[3]Lee W S,Lin C F.Plastic deformation and fracture behavior of Ti-6A1-4V alloy loaded with high strain rate under various temperatures[J].Materials Science and Engineering,1988,A241:48~59.
[4]Smerd R,Winker S,et al.High strain rate tensile testing of automotive aluminum alloy sheet[J].International Journal of Impact Engineering,2005,32;541~560.
[5]李国和,王敏杰,等.高温高应变率动态力学性能及其本构关系[J].材料科学与工艺,2010,18:824~828.
[6]王磊,刘杨,等.动态载荷对长期时效GH4169合金拉伸变形行为的影响[J].钢铁研究学报,2011,23:213~216.
[7]刘杨,王磊,等.长期时效对GH4169合金动态拉伸变形行为的影响[J].金属学报,2012,48(1):49~55.