摘要
研究了冷轧铜/铝复合板横向界面结合强度,运用有限元方法模拟了铜/铝复合板结合界面处中性面位置的法向应力和金属的横向流动速度,通过单道次冷轧制备了55%~75%压下率的铜/铝复合板,研究了复合板的结合强度、界面和剥离界面。结果表明,在同一压下率下,从复合板边部到中部,结合界面处中性面位置的法向应力显著增大,金属的横向流动速度逐渐减小;结合界面处中性面位置的法向应力和边部金属的横向流动速度随压下率增大而逐渐增大;55%~75%压下率时,中部界面平直、光滑,边部界面出现缩孔和裂缝。冷轧铜/铝复合板中部结合强度比边部高。
The transverse interface bonding strength of cold rolled copper/aluminum clad sheets was studied. The normal stress and the transverse flow velocity of the metal at the neutral surface of the interface of copper/aluminum clad sheets were simulated by using finite element method. The copper/aluminum clad sheet with 55%~75% reduction rate was prepared by single pass cold rolling. The bonding strength, interface and peeling interface of the clad sheet were studied. The results show that at the same reduction rate, from the edge to the middle, the normal stress on the neutral surface at the interface is significantly increased, and the transverse flow velocity of the metal is gradually reduced. The normal stress at the neutral plane of the interface and the transverse flow velocity of the side metal increase with the increase of the reduction rate. When the reduction rate is 55%~75%, the central interface is straight and smooth, and the edge interface has shrinkage holes and cracks.The central bonding strength of the cold rolled copper/aluminum composite sheet is higher than that of the edge part.
作者
王跃林
高翔宇
王涛
刘江林
范婉婉
WANG Yuelin;GAO Xiangyu;WANG Tao;LIU Jianglin;FAN Wanwan(School of Mechanical Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《热加工工艺》
北大核心
2020年第3期92-95,共4页
Hot Working Technology
基金
国家自然科学基金(重点项目)(U1710254)
山西省高等学校科技创新基金项目(2017132)
山西省自然科学基金项目(201701D221143).
关键词
复合板
轧制
有限元方法
结合强度
显微结构
clad sheet
rolling
finite element method
bond strength
microstructure
