钛镍形状记忆合金丝材力学性能研究  

Study on Mechanical Properties of Nickel-titanium Shape Memory Alloy Wires

作　　者：袁志山[1] 吴艳华[2] 周瑾[1] 繆卫东 朱明[1] 

机构地区：[1]北京有色金属研究总院有研亿金新材料股份有限公司,北京102200 [2]有色金属技术经济研究院,北京100080

出　　处：《热加工工艺》2014年第14期183-186,190,共5页Hot Working Technology

基　　金：北京有色金属研究总院创新基金资助项目(201252807)

摘　　要：通过热处理和拉伸测试等手段研究了不同加工状态TiNiCu、TiNiCr和TiNi钛镍形状记忆合金丝材力学性能和超弹性能。研究结果表明,通过优化热处理工艺参数使不同合金成分和状态钛镍形状记忆合金获得较好的超弹性能。热加工态二元钛镍形状记忆合金在400℃保温15和30 min水冷能获得理想的超弹性。冷加工态二元钛镍形状记忆合金在450℃保温30 min水冷,能获得理想的超弹性。热加工态钛镍形状记忆合金在450℃保温30 min水冷可以获得理想的记忆性能。TiNiCu和TiNi二元钛镍形状记忆合金丝材经630℃保温10 min水冷易获得超弹性能。Based on the TiNiCu, TiNiCr and TiNi shape memory alloys, the mechanical properties and superelasticity of wires under different conditions were investigated by heat treatment and tensile testing. The results show that the high superelasticity of TiNiCu, TiNiCr and TiNi shape memory alloy wires can be achieved by optimizing aging scheme. After aging at 400 ℃ for 15 min and 30 min, water cooling, the hot-worked TiNi binary shape memory alloy wires obtain the high superelasticity. After aging at 450 ℃ for 30 min, water cooling, the cold-worked TiNi binary shape memory alloy wires obtain the high superelasticity. Shape memory effect is obtained for the hot-worked TiNi binary shape memory alloy wires, treated at450 ℃ aging for 30 min, water cooling. After aging at 630 ℃ for 10 min, water cooling, TiNiCu and TiNi binary shape memory alloy wires obtain the high superelasticity.

关 键 词：钛镍形状记忆合金 钛镍合金 超弹性能 记忆性能 NITI TINI 

分 类 号：TG146[一般工业技术—材料科学与工程]