ABSTRACT The current work is all a matter of the separate study of the effect of charge thickness or stand-off gap on the quality of the bonding interface. The relationship among collision velocity, charge thickness and stand-off gap in parallel explosive welding was illustrated. Four TA2/Q235B composite plates with different parameters were manufactured to investigate the effect of the collision velocity on the bonding interface. The interface morphology, element diffusion and mechanical properties of samples with different parameters were discussed, respectively. The results indicated all samples were corrugated combination and the higher-speed samples obtained larger waves with more pronounced vortex regions and melted layers. The composite interfaces presented six different grain structures due to plastic deformation, respectively. In addition, high-speed samples had a wider element diffusion layer. TiFe3 and TiFe2 were found in the vortex region and the melting layer, respectively. The mechanical tests showed that the hardness of the interface was the highest and decreased gradually to both sides. The tensile strength and shear strength were higher than the raw material. The higher collision velocity increased the tensile strength but decreased the shear strength. The intermetallic compounds with cleavage fracture existed at the interface and ductile fracture occurred at other positions.

中文翻译：

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炉料厚度和间距对爆炸焊接TA2和Q235B界面特性影响的综合研究

摘要 目前的工作都是单独研究电荷厚度或间距对键合界面质量的影响。阐述了平行爆炸焊接中碰撞速度、装药厚度和间距之间的关系。制作了四块不同参数的 TA2/Q235B 复合板，以研究碰撞速度对结合界面的影响。分别讨论了不同参数样品的界面形貌、元素扩散和力学性能。结果表明，所有样品都是波纹组合，速度越高的样品获得的波浪越大，涡流区域和熔化层越明显。由于塑性变形，复合材料界面分别呈现六种不同的晶粒结构。此外，高速样品具有更宽的元素扩散层。TiFe3 和 TiFe2 分别存在于涡流区和熔化层中。力学测试表明，界面硬度最高，向两侧逐渐降低。拉伸强度和剪切强度均高于原材料。较高的碰撞速度增加了拉伸强度，但降低了剪切强度。界面处存在解理断裂的金属间化合物，其他部位出现韧性断裂。拉伸强度和剪切强度均高于原材料。较高的碰撞速度增加了拉伸强度，但降低了剪切强度。界面处存在解理断裂的金属间化合物，其他部位出现韧性断裂。拉伸强度和剪切强度均高于原材料。较高的碰撞速度增加了拉伸强度，但降低了剪切强度。界面处存在解理断裂的金属间化合物，其他部位出现韧性断裂。