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非静水压下不同强度材料的应力传递特性

DOI: 10.11858/gywlxb.2013.02.006, PP. 205-210

Keywords: 应力传递,强度,非静水压

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Abstract:

运用金刚石压砧(DAC)同步辐射角散X射线衍射技术,对非静水压缩下不同强度材料的应力传递特性进行了高压原位研究。分别将Pt与β-SiC、Pt与WC以及WC与β-SiC压至56、61和25GPa,实验发现,由于两种不同材料的屈服强度存在差异,其晶粒边界的应力传递是不连续的,同时观测到两种材料之间的应力差随强度差的增加而增加。在DAC轴向X射线衍射实验中,相同加载下,从接近最小应力的方向观测到,强度大的材料其应力较小。

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