6016铝合金汽车前发动机罩内板冲压开裂研究  

Research on stamping cracking of 6016 aluminum alloy inner panel for automobile front engine hood

作　　者：李延成 迟蕊 徐志远 杨立民 张德镇 于俊芃 麻慧琳 王芝东 李涛 LI Yancheng;CHI Rui;XU Zhiyuan;YANG Limin;ZHANG Dezhen;YU Junpeng;MA Huilin;WANG Zhidong;LI Tao(Shandong Nanshan Aluminum Co.,Ltd.,Longkou Shandong 265713,China)

机构地区：[1]山东南山铝业股份有限公司南山铝业板带事业部,山东龙口265713

出　　处：《轻合金加工技术》2023年第12期45-48,共4页Light Alloy Fabrication Technology

摘　　要：借助扫描电镜、拓朴仪及X射线衍射仪等仪器,分析了6016铝合金汽车前发动机罩内板在冲压过程中开裂的原因。结果表明,开裂件的断裂为韧性断裂,断裂形式为穿晶断裂;原始板材表面平整,而开裂件则出现了不均匀变形,这与冲压过程中形成的罗平线有关。冲压过程中的发动机罩内板开裂的解决措施:调节热轧温度及晶粒形状,改进冲压工艺等。By means of scanning electron microscope,topograph and X-ray diffractometer,the cracking reasons of the inner panel of the front engine hood during the stamping process were analyzed.The results show that the fracture mechanism of the cracked part is ductile fracture,and the fracture mode is transgranular fracture;the surface of the original sheet is flat,while the cracked part shows uneven deformation,which is related to the ropping formed in the stamping process.The measures to avoid cracking on the inner panel include adjusting hot rolling temperature and grain morphology,upgrading of stamping process and so on.

关 键 词：6016铝合金 发动机罩内板 冲压开裂 罗平线 热轧温度 

分 类 号：TG146.21[一般工业技术—材料科学与工程]