【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10¹¹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。更多还原

【Abstract】 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.更多还原