形状记忆合金
假弹性
材料科学
铁质
冶金
合金
马氏体
钛镍合金
微晶
微观结构
作者
Yuuki Tanaka,Y. Himuro,Ryosuke Kainuma,Yuji Sutou,Toshihiro Omori,K. Ishida
出处
期刊:Science
[American Association for the Advancement of Science (AAAS)]
日期:2010-03-19
卷期号:327 (5972): 1488-1490
被引量:445
标识
DOI:10.1126/science.1183169
摘要
Ferrous Shape Memory Alloy So-called shape memory alloys “remember” the shape they are processed into, and can return to that shape after being deformed by heat. A limitation for most metal-based shape memory alloys is the extent to which they can be deformed elastically. Tanaka et al. (p. 1488 ; see the Perspective by Ma and Karaman ) demonstrate an iron-based alloy that shows much higher levels of superelastic strain, surpassing the performance of nickel-titanium alloys. In addition to high superelastic strain, this ferrous shape memory alloy has much higher strength than NiTi and copper-based shape memory alloys and, consequently, a high-energy absorption capability. These properties may allow shape memory alloys to be exploited as strain sensors or energy dampers.
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