Fe-Mn-Si合金不同变形条件的应力松弛特性Stress relaxation characteristics of Fe-Mn-Si alloy under different deformation conditions
刘林林,宋春雨,林成新,潘丽萍
摘要(Abstract):
采用X射线衍射、透射电镜观察研究了Fe-17Mn-5Si-10Cr-5Ni合金恒应变约束时,拉伸停载过程中应力诱发ε马氏体相变的特点及其应力松弛特性。研究表明,恒应变约束状态下停载10 min可以有效提高合金的应力诱发ε马氏体数量;恒应变停载0~5 min时,Fe-Mn-Si记忆合金应力松弛率随时间急剧上升,5 min之后,松弛率增加变缓,表明应力诱发γ→ε马氏体相变主要在前5 min内完成;热-机械训练既提高Fe-Mn-Si记忆合金形状记忆效应,又降低合金的应力松弛率,在实际工程应用时应予以考虑。
关键词(KeyWords): Fe-Mn-Si合金;马氏体相变;应力松弛
基金项目(Foundation):
作者(Author): 刘林林,宋春雨,林成新,潘丽萍
DOI: 10.13289/j.issn.1009-6264.2014.03.008
参考文献(References):
- [1]Sato A,Chisima E,Yanaji Y et al.Shape memory effect inγεtransformation in Fe-30Mn-1Si alloys single crystals[J].Acta Metall,1982,30:1177-1183.
- [2]林成新,王桂新,王金刚.Fe-Mn-Si合金循环变形中马氏体相变和应变疲劳特性[J].材料热处理学报,2007,28(5):35-56.LIN Cheng-xin,WANG Gui-xin,WANG Jin-gang.Martensitic transformation duringcuclicde formation and strain fatigue characteristics of Fe-Mn-Si alloy[J].Transactions of Materials and Heat Treatment,2007,28(5):35-56.
- [3]Gu Q,Federaoni L,Jang W Y,et al.γ!εandγ!ε!α'transformation in a Fe-Mn-Si based shape memory steel[C]//Proc of Inter Sym on Shape Memory Materials,Beijing,1994:488-492.
- [4]邱平善,王桂芳,郭立伟.材料近代分析测试方法实验指导[M].哈尔滨:哈尔滨工程大学出版社,2001.
- [5]徐祖耀.Fcc(γ)→hcp(ε)马氏体相变[J].中国科学:E辑,1997,27(4):289-293.XU Zu-yao.Fcc(γ)→hcp(ε)martensite transformation[J].China Scientific:E,1997,27(4):289-293.
- [6]乔志霞,刘永长,王东爱,等.Fe-Mn-Si记忆合金中应力诱发γ→εM的相变机制[J].材料科学与工程学报,2007,25(5):667-670.QIAO Zhi-xia,LIU Yong-chang,WANG Dong-ai,et al.Mechanism of stress inducedγ→εM Martensite martensite transformation in an Fe-Mn-Si shape memory alloy[J].Journal of Materials Science&Engineering,2007,25(5):667-670.
- [7]王小祥,赵连成.Fe-Mn-Si-Ni-Co合金中形变应力诱发ε马氏体的稳定化及其对记忆效应的影响[J].功能材料,1994,25(5):440-444.WANG Xiao-xiang,ZHAO Lian-cheng.The stabilization of deformed stress-inducedεmartensite and its effect on shape memory effect in an Fe-Mn-SiNi-Co alloy[J].Journal of Functional Materials,1994,25(5):440-444.
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