常温下以不锈钢复合板(16MnR钢板与0Cr18Ni9Ti钢板爆轰复合)和16MnR钢为研究对象,利用分离式霍普金森杆技术,在旋转盘冲击拉伸试验机上完成冲击拉伸加载试验.研究应变率在270～1 650 s~(-1)范围内,材料的冲击力学特性.测试结果表明,不锈钢复合板和16MnR钢具有应变率强化效应,通过电镜分析确定过载断裂区为韧窝结构,爆轰复合经热处理后材料的塑性基本无改变,两种材料仍为塑性材料.
The impact tensile behavior of explosive cladding 16MnR/stainless steel plate and 16MnR steel was investigated on Split Hopkinson Tensile Bar. On a rotating disk impact machine, the impact tensile experiments were carried out. The impact characteristics of these materials were studied at strain rate from 270 s~(-1) to 1 650 s~(-1). The results show that 16MnR steel and the 16MnR/stainless steel cladding plate are sensitive to strain rate. Dimples are found in the region of fracture by SEM observations, indicating the plastic characteristic of the materials.
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