摘要
本文用“绝热摩擦机制”和“微爆炸焊接模型”讨论了爆炸烧结过程中金属粉末颗粒边界局部升温以至熔融的机理。指出这种升温时间大致和激波前沿的上升时间相当,约10^(-8)秒量级 升温率高达10^(11)度/秒。其界面温度可超过常压下的金属熔点。并与McQueen等人建立的多孔隙材料的绝热压缩理论进行了比较。
In this paper the mechanism of rising temperature cuntil melt) at the interface of metal powder in explosive consolidation is studied by using the adiabatic friction and micro-explosive welding model. The duration of the rising temperature is nearly equivalent to the rising time of the shock wave front, i.e.. about 10-8 sec. The rising rate of the temperature approaches to 10n℃/sec. The temperature at the interface can be higher than the melting point of the metal. The calculation results coincide with the experiments given by Morris.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
1989年第1期16-27,共12页
Explosion and Shock Waves
基金
国家自然科学基金
关键词
金属粉末
爆炸烧结
界面
激波
explosive sintering, explosive compaction, explosive consolidation.
