【摘要】 用旋转圆盘实验机研究了Fe-25Mn-6Si-7Cr形状记忆合金空蚀。结果表明,Fe-25Mn-6Si-7Cr形状记忆合金空蚀是一种疲劳破坏,失效机制为沿晶断裂和晶内蚀坑。Fe-25Mn-6Si-7Cr形状记忆合金空蚀的速度效应小,抗空蚀性能在34m/s和45m/s速度下分别是对比材料0Cr13Ni5Mo不锈钢的1.6倍和7.3倍。伪弹性是Fe-25Mn-6Si-7Cr形状记忆合金具有高抗空蚀性能的主要原因。更多还原

【Abstract】 The cavitation erosion of Fe-25Mn-6Si-7Cr shape memory alloy is a failure of fatigue, and the failure mechanism is intergranular crack and intra-crystalline etching pit. Its effect of velocity on cavitation damage is a little and the cavitation erosion resistance is 1.6 times at speed 34 m/s and 7.3 times at speed 45 m/s as much as that of the referring OCrl3Ni5Mo stainless steel. The excellent cavitation erosion resistance of the Fe-25Mn-6Si-7Cr shape memory alloy is mainly attributed to its good pseduoelasticity.更多还原