温度和应变率历史对拉伸载荷下铁基记忆合金本构关系影响的研究

1.天津大学,力学系,天津,300072

2.天津大学,力学系,天津,300072

3.天津大学,力学系,天津,300072

4.Commission of the European Communities,J.R.C., Ispra Establishment,Italy

5.Commission of the European Communities,J.R.C., Ispra Establishment,Italy

基金项目: 国家自然科学基金(19372011)

Research for temperature and strain-rate history effects on constitutive relation of Fe-base shape memory alloy under tension

在20～500℃和0.00208～193s-1的范围内研究了温度和应变率历史对拉伸载荷下铁基记忆合金本构关系的影响.实验结果表明,应变率历史对该材料具有强化作用,而且随着预应变率的提高,其强度提高,延伸率降低.其对应变率历史的敏感性则随着温度的升高而降低.

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