作　　者： ; ;

机构地区： 大连理工大学材料科学与工程学院材料科学与技术系

出　　处： 《功能材料与器件学报》 1996年第2期78-82,共5页

摘　　要： 本文研究了预应变ＮｉＴｉ形状记忆合金丝输出应力与应变及其关系。结果表明，预应变ＮｉＴｉ记忆合金丝输出应力与应变是非线性关系。输出应力由相变输出应力和弹性输出应力组成，相变输出应力随温度升高而升高，而与预应变几乎无关，相变输出开始和终止应力与温度为线性关系；输出应变由相变输出应变和弹性输出应变组成，相变输出应变随预应变增加而增加，随温度升高而减少，输出功是预应变和温度的函数。 The output of stress and strain for NiTi shape memory alloy wires was investigated.The stress output is composed of transformation and elastic stress output, the former increases with the increase of temperature,and is independent of the prestrain. The starting and terminal transformation stresses have a linear relations hip with temperature. The strain output is composed of transformation and elastic strain output, and the former increases with the increase of the prestrain and decreases with the increase of the temperature. The work output is a function of the prestrain and temperature.

关 键 词： 形状记忆合金 合金丝 输出应力 输出反复

领　　域： [金属学及工艺] [一般工业技术] [金属学及工艺]