(哈爾濱工業(yè)大學(xué)材料科學(xué)與工程學(xué)院，哈爾濱150001)
摘 要: 研究了冷拔量、熱處理}工藝參數(shù)對Ti-49.8%Ni合金絲材的超彈性的影響。結(jié)果表明不同冷拔量、不同退火工藝處理的絲材獲得完全超彈性的溫度區(qū)間、超彈性特性都不相同，獲得最大超彈性應(yīng)變量的處理的工藝為冷拔星39%、退火溫度723 K、保溫時間30 min。
關(guān)鍵字: 形狀記憶合金 相變超彈性 NiTi形狀記憶合金
NiTi SHAPE MEMORY ALLOY
（School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001）
Abstract:Influence of cold drawing and annealing treatments upon pseudoelasticity of NiTi wire with 49.8% Ni has been examined. It was shown that complete pseudoelasticity and different pseudoelastic characteristics were observed over a temperature range up to 45 K under varying cold drawing and annealing conditions. Excellent pseudoelasticity can be obtained in Ti-49.8%Ni wire annealed at 723 K for 30 min after 39% cold drawing reduction.
Key words: shape memory alloy pseudoelasticity NiTi shape memory alloy
