两种铁基形状记忆合金抗空蚀性能比较  

A Comparison of the Cavitation Erosion Resistance of Two Fe-Based Shape Memory Alloys

作　　者：龙霓东[1] 朱金华[1] 

机构地区：[1]西安交通大学材料强度国家重点实验室

出　　处：《稀有金属材料与工程》2004年第8期852-854,共3页Rare Metal Materials and Engineering

基　　金：国家自然科学基金重点项目(59831030);国家重点基础研究专项经费资助项目(G19990650)

摘　　要：对Fe-26Mn-6Si-7Cr-1Cu和Fe-20Mn-6Si-7Cr-1Cu两种Fe基形状记忆合金进行了超声波振动空蚀试验,结果表明,两种合金都具有优良的抗空蚀性能,比较而言,Fe-26Mn-6Si-7Cr-1Cu合金的抗空蚀性能优于Fe-20Mn-6Si-7Cr-1Cu合金。在局部载荷作用下可吸收较多弹性变形能及在空蚀过程中有较高应变诱发马氏体相变能是前者抗空蚀性能优于后者的主要原因。Cavitation erosions of Fe-26Mn-6Si-7Cr-1Cu and Fe-20Mn-6Si-7Cr-1Cu shape memory alloys were investigated by using an ultrasonic vibratory apparatus. It is showed that both alloys have good cavitation erosion resistance. Fe-26Mn-6Si-7Cr-1Cu alloy is more resistant to cavitation erosion than Fe-20Mn-6Si-7Cr-1Cu alloy, which is mainly attributed to the higher strain-induced martensitic transformation energy and elastic deformation energy under a localized load.

关 键 词：空蚀 相变能 弹性变形能 铁基形状记忆合金 

分 类 号：TG172.5[金属学及工艺—金属表面处理]