高温高应变率扭-拉复合加载下铁基记忆合金的本构关系  

Constitutive Relation of Fe base Shape Memory Alloy under Torsion tension at a High Strain rate and an Elevated Temperature

作　　者：杨兆海[1] 高丛峰[2] 梁丽杰[1] 

机构地区：[1]空军第二航空学院基础部,长春130022 [2]吉林工业大学工程力学系,长春130025

出　　处：《吉林大学自然科学学报》2000年第3期65-67,共3页Acta Scientiarum Naturalium Universitatis Jilinensis

摘　　要：利用高应变率扭 -拉复合加载的分离式霍布金森杆装置 ,对 2 0℃和 50 0℃下铁基形状记忆合金高应变率扭 -拉复合加载下的本构关系进行实验研究 .结果表明 ,高应变率扭 -拉复合加载下铁基形状记忆合金的强度和延伸率均随温度的升高而降低 ;扭转和拉伸之间存在相互耦合作用 。With a split Hopkinson torsion tension combination bar apparatus, the constitutive relation of Fe base shape memory alloy was experimentally studied at different temperatures. The results indicate that (1) its strength and ductility decrease with rising temperature under torsion\|tension at a high strain rate; and (2) there is a interaction between torsion and tension, which descends as temperature rises.

关 键 词：应变率 本构关系 铁基形状记忆合金 复合加载 

分 类 号：TG139.6[一般工业技术—材料科学与工程]