Ta-W合金气体炮加载软回收分析

• 作 者: 丁旭 张德尧 张迁杰
• 机 构: 西北有色金属研究院
• 出 处: 中国钼业
• 发表日期: 1998年02期
• 关键词: Ta-W 加载条件 动态断裂 冲击加载 加工硬化 软回收 断裂性能 脆性断裂 冲击载荷 加工状态

利用一级气体炮低冲击载荷加载技术，对Ｔａ０５Ｗ和Ｔａ１２Ｗ合金进行了冲击波加载软回收实验，研究了ＴａＷ合金在冲击波加载作用后材料的组织和性能的变化，分析了钨含量、加工状态对ＴａＷ合金动态断裂性能的影响，探讨了在冲击波加载条件下ＴａＷ合金的动态断裂机制。实验结果说明：（１）在冲击载荷作用下，ＴａＷ合金内部发生变形和加工硬化，使材料硬度增加；（２）在相同的冲击载荷作用下，Ｔａ１２Ｗ合金加工态抗冲击波的能力较部分再结晶状态强；（３）在相同的加载条件下，Ｔａ０５Ｗ损伤度轻于Ｔａ１２Ｗ，说明添加的钨元素促进了缺陷的成核与成长过程；（４）在冲击波加载条件下，随钨含量的增加，ＴａＷ合金的动态断裂由延性断裂转变为脆性断裂。

The use of a low-impact gas gun loading technology, Ta  0.5W and Ta  12W alloy was shock wave loaded soft recovery experiments Ta  W alloy shock wave loading material after the organization and performance changes, analysis The effect of tungsten content and processing state on the dynamic fracture properties of TaW alloy was discussed. The dynamic fracture mechanism of TaW alloy under shock loading condition was discussed. The experimental results show that: (1) Under the impact load, the deformation and work-hardening of TaW alloy occur, which increases the hardness of the material; (2) The ability of Ta  12W alloy to deal with shock wave under the same impact load (3) Under the same loading conditions, the damage degree of Ta05W is lower than that of Ta12W, indicating that the addition of tungsten promotes the nucleation and growth of defects. (4) In the condition of shock wave Under the loading conditions, with the increase of tungsten content, the dynamic fracture of TaW alloy changes from ductile fracture to brittle fracture.