等径角挤压层状复合材料的扩散连接（英文）

发布时间：2018-04-19 14:35

本文选题：等径角挤压 + 剪切强度　；参考：《Transactions of Nonferrous Metals Society of China》2017年09期

【摘要】：研究了等径角挤压层状复合材料的微观组织、扩散和机械结合行为以及显微硬度分布。在室温和高温(300°C)下采用1～4道次等径角挤压工艺制备Al-Cu和Cu-Ni层状复合材料。扫描电镜微观结构表征及抗剪强度试验结果表明,由于在等径角挤压过程中具有更高的塑性变形容忍度,4道次等径角挤压试样层片材料之间的结合强度远远高于1道次样品。此外,剪切强度数据表明,升高等径角挤压温度会使试样的剪切强度显著增加,这主要是由于Al/Cu和Cu/Ni界面在高温下形成了扩散连接。等径角挤压Cu/Ni/Cu复合材料的高温剪切结合强度明显高于等径角挤压Cu/Al/Cu复合材料。
[Abstract]:The microstructure, diffusion and mechanical bonding behavior and microhardness distribution of the laminated composites were studied.Al-Cu and Cu-Ni laminated composites were prepared at room temperature and high temperature (300 掳C) by 1-pass 4-channel secondary angular extrusion.The results of SEM microstructure characterization and shear strength test show that the binding strength of the four pass secondary angular extruded laminates is much higher than that of the first pass due to the higher plastic deformation tolerance during the equal-diameter angular extrusion.In addition, the shear strength data show that the shear strength of the samples increases significantly when the equal angular extrusion temperature is increased, which is mainly due to the formation of diffusion bonding between the Al/Cu and Cu/Ni interfaces at high temperature.The high temperature shear bonding strength of Cu/Ni/Cu composites is higher than that of Cu/Al/Cu composites.
【作者单位】： Department
【分类号】：TB331

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