热处理对铜包铝复合材料界面组织及结合强度的影响
发布时间：2018-10-10 11:01
【摘要】：研究了铜包铝棒材的断裂行为和不同热处理对铜包铝复合材料界面结合强度的影响。结果表明:铜包铝复合材料在剪切作用力下裂纹在Cu_9Al_4层与CuAl_2层结合处形核并扩展。当载荷达到17.5 MPa时,裂纹会穿过Cu_9Al_4层向铜层扩展或者贯穿CuAl_2层向共晶层延伸,当载荷达到50.0MPa时铜包铝复合材料发生断裂。400℃×60 min热处理后,CuAl_2层开始变厚,结合强度下降到40.3 MPa;450℃×60 min热处理后,CuAl_2层厚度急剧长大,结合强度急剧下降至18.4 MPa;500℃×60 min热处理后CuAl_2相消失,结合强度达到最大值60.3 MPa;530℃×60 min热处理后CuAl_2层重新形成,结合强度为13.4MPa;而高于550℃×60 min热处理以后,该材料会发生明显的熔蚀反应。
[Abstract]:The fracture behavior of copper-clad aluminum bar and the effect of different heat treatment on the interfacial bonding strength of copper-clad aluminum composite were studied. The results show that the crack nucleates and propagates in Cu_9Al_4 layer and CuAl_2 layer under shear force. When the load reaches 17.5 MPa, the crack will propagate through the Cu_9Al_4 layer to the copper layer or through the CuAl_2 layer to the eutectic layer. When the load reaches 50.0MPa, the CuAl2 layer will become thicker after the fracture occurs at .400 鈩，
本文编号：2261517
[Abstract]:The fracture behavior of copper-clad aluminum bar and the effect of different heat treatment on the interfacial bonding strength of copper-clad aluminum composite were studied. The results show that the crack nucleates and propagates in Cu_9Al_4 layer and CuAl_2 layer under shear force. When the load reaches 17.5 MPa, the crack will propagate through the Cu_9Al_4 layer to the copper layer or through the CuAl_2 layer to the eutectic layer. When the load reaches 50.0MPa, the CuAl2 layer will become thicker after the fracture occurs at .400 鈩，
本文编号：2261517
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