时效处理对低间隙TiNi形状记忆合金超弹性的影响(英文)

Effect of Aging on Superelasticity of TiNi Shape Memory Alloy(SMA) with Low Clearance

研究了时效处理对低间隙TiN i形状记忆合金超弹性的影响。结果表明,分别经300℃/60~180 min及400℃/10~30 min时效处理后,TiN i形状记忆合金丝材抗拉强度均大于1000 MPa,经6%应变加载-卸载后,残余应变量均小于0.31%。经以上两种时效处理工艺后,低间隙TiN i形状记忆合金线材均具有良好的力学性能及超弹性。

The effect of aging on superelasticity of TiN i shape memory alloy(SMA) was studied by mechanical property tests.Results indicate that after aging treatment of 300 oC/60~180 min and aging treatment of 400 oC/10~30 min,the tensile strengths of Ti Ni SMA wires are higher than 1000 MPa,and the residual strains are less than 0.31% in loading-unloading tensile tests of 6%.The low clearance Ti Ni SMA has better mechanical properties and superelasticity after above aging treatments.