Investigation on the Impulsive dynamic deformation of magnesium alloys and theapplication for high-strain-rate forming

本研究旨在阐明镁合金在强动态载荷作用下的高应变率变形，探索以爆炸焊接为主的材料加工的可能性。首先在装有高速摄像机的火药枪上进行了高速模压成形实验，并将测量结果与AUTODYN程序的数值模拟结果进行了比较。此外，还对Al、Ti等材料与AZ31镁合金进行了爆炸焊接试验，试验结果表明，为改善粘接性能，应考虑减少碰撞动能损失。

The present investigation intended to clarify the high-strain-ratedeformation of magnesium alloy under intense dynamic loading and to find out thepossibility of materials processing mainly on explosive welding. At first, high-velocitydie forming experiments were performed using a powder gun equipped with ahigh-speed video camera, and the measured result was compared with numericalsimulation using AUTODYN code. Also, explosive welding experiments wereperformed for Al, Ti and others with AZ31 magnesium alloy , and the experimentalresults suggest that the decrease in the kinetic energy loss by collision should be takenit into account as to improve the bonding property .