摘要
研究了Ｆｅ－Ｍｎ－Ｓｉ合金和Ｆｅ－Ｍｎ－Ｓｉ－Ｃｒ－Ｎｉ合金的记忆性能—回复率和回复力．结果表明：Ｃｒ，Ｎｉ元素明显提高回复率和回复力．两种合金的回复率随淬火温度升高而增大，在７００～８００℃达到最大值，以后随淬火加热温度进一步升高而降低．回复率随预变形量增加而降低．在预变形—加热回复的循环过程中，回复率发生降低，３０次后趋于稳定．预变形量小于２％时，回复力随预变形量增加而增大；预变形量大于２％后。
This paper deals with the memory properties of Fe-Mn-Si shape memory alloy and Fe-Mn-Si-Cr-Ni shape memory alloy. The results show that: the addition of Cr and Ni increased shape recovery ratio and recovery stress remarkably in Fe-Mn-Si shape memory alloy. The recovery ratio of the tested alloy increased as quenching temperature increased, and reached maximum at 700 ℃～800 ℃, then decreased with further increase in quenching temperature. The recovery capability degraded during the cycles of pre-deformation-recovery and stabilized after 30 cycles. The recovery stress increased as pre-strain increased. When the pre-strain was greater than 2%, the recovery stress increased slightly.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
1997年第6期56-59,共4页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省自然科学基金
