Study on Interface Structure and Properties of Copper-Steel Composites with Different Detonation Processes Under Vacuum Condition
[Purposes]This paper studies on difficult issues such as high-temperature deformation,inter-facial intermetallic compounds,and unstable product performance encountered in the application of copper-based clad materials in the fields of heat exchange and electricity.[Methods]In the vacuum state,different detonation processes were used to conduct explosive composite tests on TU1 copper and Q345 R steel,and the metallographic structure and mechanical properties of the composites were tested and analyzed.[Findings]From the experimental results,it can be seen that with the increase of detona-tion velocity,the interface ripple depth will also increase.The average value of the separation strength of the composite material(Z direction)is 483 MPa,the average value of the interfacial shear strength is 238 MPa,and the maximum value of the microhardness is 196 HV,which means the farther away from the in-terface position,the closer to the bulk material.When the detonation velocity is 2 200 m/s,the copper side adhesion occurs at the fracture.[Conclusions]The performance indexes of the composite material are bet-ter than those of the bulk metal,and the interface is in a sine wave shape.From the interface to the bulk metal direction,the grain structure shows the characteristics of diversified crystal transformation.Through further analysis of the bonding interface showed that no harmful substances such as oxides/nitrides ap-peared at the interface.
detonation processes under vacuum conditioncopper-steel compositesmicro/macro struc-turemechanical properties
王玉龙、董祥雷、赵红亮、杨若雅、朱元华、夏金民、YANG Yujun
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郑州宇光复合材料有限公司,河南 郑州 450000
郑州大学,河南 郑州 450000
Zhengzhou Yuguang Cald Material Co.,Ltd.,Zhengzhou 450000,China
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