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厚度配比对轧制Cu/Al复合板拉剪强度的影响
英文标题:Influence of thickness proportion on tensile-shear strength for rolling Cu/Al composite sheets
作者:马啸昌 冯光 王涛 付文石 牛辉 
单位:太原理工大学 
关键词:轧制 厚度配比 搓轧区长度 拉剪强度 双金属复合板 裂纹 
分类号:TP182
出版年,卷(期):页码:2020,45(6):15-52
摘要:

拉剪强度是评价轧制双金属复合板质量的重要指标,受材料属性、厚度配比、轧制速度、轧制温度和压下率等多种因素影响。以轧制10 mm厚度的Cu/Al复合板为例,通过数值模拟和实验方法分析了厚度配比对搓轧区长度以及拉剪强度的影响规律,模拟结果表明,搓轧区长度随Cu厚度占比的增大而增大,轧制Cu/Al复合板拉剪强度的实测结果显示,随着Cu厚度占比的增大,拉剪分离面铜侧垂直于轧向的裂纹增多,拉剪强度提高。在Cu厚度占比为50%时,拉剪分离面铜侧裂纹最多,搓轧现象最为明显,搓轧区长度和拉剪强度均达到峰值。研究内容可为高强度双金属复合板的制备提供参考。

The tensile-shear strength is an important indicator for evaluating the quality of rolling bimetallic composite sheets, which is affected by many factors such as material properties, thickness proportion, rolling speed, rolling temperature and reduction rate. For the rolling Cu/Al composite sheet with the thickness of 10 mm, the influence laws of thickness proportion on the length of rubbing rolling zone and the tensile-shear strength were analyzed by numerical simulation and experimental methods. The simulation results show that the length of rubbing rolling zone increases with the increasing of thickness proportion for Cu. Furthermore, the measured results of tensile-shear strength for the rolling Cu/Al composite sheets show that with the increasing of thickness proportion for Cu, the crack on the copper side of tensile-shear separation surface perpendicular to the rolling direction increases, and the tensile-shear strength increases. When the thickness proportion of Cu accounts for 50%, the crack on the copper side of tensile-shear separation surface is the most, the rubbing rolling phenomenon is the most obvious, and the length of rubbing rolling zone and the tensile-shear strength reach the peak. Thus, the above research provides valuable reference for preparing high-strength bimetallic composite sheets.

基金项目:
山西省重大专项项目子课题(183060169-S);太原市科技局科技计划项目(183060073-K)
作者简介:
马啸昌(1994-),男,硕士研究生 E-mail:tyutmxc@163.com 通讯作者:冯光(1983-),男,博士,副教授 E-mail:feng_guang@yeah.net
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