测定了Ti50Ni47Fe3形状记忆合金弹簧升温过程经过马氏体相变、R相变回复力、回复位移的特性曲线.结果表明:Ti50Ni47Fe3弹簧在马氏体相变(-100℃至-70℃)过程,回复性能不明显,而在R相变(-10℃至10℃)过程,回复位移和回复力变化显著;Ti50Ni47Fe3弹簧最大的回复位移随约束力的增加而呈非线性增加:约束力为5.2 N,最大回复位移可达2.24 nm;最大的回复力随约束位移的增加亦呈现非线性增加:约束位移为4.4 mm,最大回复力为4.8 N.
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