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研究了未扭转和预扭转钨合金的力学性能，应变率范围１０－４～１０３ｓ－１．研究发现，未扭转和预扭转钨合金都具有大的应变率敏感性；未扭转钨合金表现出流动应力随应变增加而提高的特性（σ／ε＞０）；预扭转钨合金在准静态下表现为σ／ε＞０，而在高应变率下则呈现出失稳现象（σ／ε＜０）；预扭转试件的表面有肉眼可观察到的“亮带”出现，而未扭转试件则未出现．微观实验及分析表明，失稳现象与钨合金组元的热力性能和空间结构分布有关．
The mechanical properties of un-twisted and pre-twisted tungsten alloys were investigated. The strain rate range was 10-4 ~ 103s-1. The results show that both un-twisted and pre-twisted tungsten alloys have a large strain rate sensitivity; un-twisted tungsten alloys show a characteristic of increased flow stress with increasing strain (σ / ε> 0) (σ / ε <0) at high strain rate; the “bright band” observable by the naked eye on the surface of pre-twisted specimen Appeared, but did not reverse the specimen did not appear. Microscopic experiments and analysis show that the instability phenomenon is related to the thermal properties and the spatial distribution of the tungsten alloy elements.