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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:哈尔滨工业大学
学位:博士
所在单位:材料科学与工程学院
电子邮箱:liulm@dlut.edu.cn
Static mechanics analyses of different laser weld bonding structures in joining AZ61 Mg alloy
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论文类型:期刊论文
发表时间:2011-10-01
发表刊物:INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
收录刊物:Scopus、SCIE、EI
卷号:31
期号:7
页面范围:660-665
ISSN号:0143-7496
关键字:Fracture mechanics; Lap-shear; Peel; Laser weld bonding
摘要:This paper presents the results of recent investigations on laser seam weld bonding (LWB) of magnesium alloy AZ61 sheets. There are two types of LWB structures: perpendicular weld seam (LWB-PE) and parallel weld seam (LWB-PA). In this paper the differences between the two structures are compared and discussed. In tensile shear tests, both LWB-PE and LWB-PA joints can offer higher failure force than that of laser welding or adhesive bonding alone, and LWB-PA joint offers better performance than LWB-PE joint. This is because the weld seam can increase the peel resistance at the free end of the adhesive bonded part, where a stress concentration exists. Maximum T-Peel strengths of LWB joints depend on the laser seam weld. The LWB-PA joint has both the advantages of maximum failure force caused by laser weld and the peel displacement caused by adhesive, so a synergistic effect is obtained in energy absorption. (C) 2011 Elsevier Ltd. All rights reserved.