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NKK 公司宣告,研制了世界上第一批实用型不锈钢基形状记忆合金。新的具有抗腐蚀特性的形状记忆合金是采用一组全新的化学成份:Fe-Cr-Ni-Mn-Si-Co(Cr:7—15%;Ni<10%;Mn<15%,Si<7%;Co:0—15%;Fe余量)。且化学成分可根据合金的实际应用进行变更。一般常用的形状记忆合金是Ni-Ti 基合金和Cu基合金。但由于其价格昂贵,且加工性能较差,故很少用作结构材料。
NKK announced that it has developed the world’s first practical stainless steel base shape memory alloy. The new shape memory alloy with corrosion resistance features a completely new chemical composition: Fe-Cr-Ni-Mn-Si-Co (Cr: 7-15%; Ni <10%; Mn <15%, Si < 7%; Co: 0-15%; Fe balance). And the chemical composition can be changed according to the actual application of the alloy. Commonly used shape memory alloys are Ni-Ti-based alloys and Cu-based alloys. However, due to its high cost and poor processability, it is rarely used as a structural material.