淬火温度对Fe-Mn-Si-C合金形状记忆性能的影响  

Effect of Quenching Temperature on Shape Memory Effect of Fe-Mn-Si-C Alloy

作　　者：许伟长[1] 戴品强[1] 邱国庆[1] 

机构地区：[1]福州大学材料科学与工程学院,福建福州350002

出　　处：《稀有金属》2005年第5期708-712,共5页Chinese Journal of Rare Metals

基　　金：福建省教育厅项目(K2002019);福州大学科技发展基金项目(2004-XQ-02)资助

摘　　要：研究淬火温度对Fe-Mn-Si-C合金的形状记忆性能的影响,发现在700℃淬火可以获得最佳的形状记忆性能。通过对合金光学显微组织、透射电镜组织的观察并结合奥氏体晶粒尺寸、形状回复率、层错几率等性能的测量,系统地讨论了不同淬火温度下,热诱发马氏体数量、Ms点、空位浓度、层错能等对形状记忆性能的综合影响,进一步探讨淬火温度对形状记忆性能影响的微观机制。The effect of quenching temperature on the shape memory effect （SME） of an Fe-Mn-Si-C alloy was investigated. The results show that the optimum SME can be obtained by quenching from 700℃. Effect of the amount of thermal induced martensite, Ms temperature, vacancy concentration, stacking fault energy etc on the SME was discussed systematically. The microstructures after various quenching temperatures were examined by optical microscope and transmission electronic microscope. The stacking fault probability was evaluated by X-ray analysis. The effect of thermal induced martensite on the SME was considered. The micromechanism of SME improved by quenching was discussed further.

关 键 词：Fe—Mn—Si基形状记忆合金 淬火 马氏体相变 热诱发马氏体 

分 类 号：TG139.6[一般工业技术—材料科学与工程]