论文部分内容阅读
对烧结态 93W-4.5Ni-2.1Fe-0.35Co 钨合金进行热挤压变形强化,获得纤维组织,再通过冷扭转变形调整纤维状钨颗粒的取向,对压、扭复合工艺制备的钨合金进行动态压缩性能测试和绝热剪切敏感性的分析,并与烧结态和冷扭转态钨合金作对比研究。结果表明,热压、冷扭复合工艺制备的钨合金在具备高屈服强度的同时,具备了较高的绝热剪切敏感性。微观分析表明,热压、冷扭复合工艺改变了条状粘结相组织的受力状态和分布状态,从而导致钨合金绝热剪切敏感性的提高。
The hot-pressed deformation of the sintered 93W-4.5Ni-2.1Fe-0.35Co tungsten alloy was strengthened to obtain the fiber structure, and the orientation of the fibrous tungsten particles was adjusted by cold and torsional deformation. The tungsten alloy prepared by the pressure and the twist composite process was subjected to Dynamic compression test and adiabatic shear sensitivity analysis, and compared with sintered and cold twisted tungsten alloy for comparative study. The results show that the hot-pressed, cold-twisted composite process of tungsten alloy with high yield strength at the same time, with a high adiabatic shear sensitivity. Microscopic analysis shows that hot pressing and cold-twisted composite process change the stress state and distribution state of the strip binder phase, which leads to the increase of the adiabatic shear sensitivity of the tungsten alloy.