Comprehensive study of microstructure and mechanical properties of friction stir welded 5182-O/HC260YD+Z lap joint
作者机构：China Academy of Machinery Ningbo Academy of Intelligent Machine Tool Co.Ltd.Ningbo 315700China Aerospace Engineering Equipment(Suzhou)Co.Ltd.Suzhou 215100China Sichuan Jiuda New Material Technology Co.Ltd.Guangyuan 628000China Zhejiang Jiwang Forging Technology Co.Ltd.Ningbo 315712China
出 版 物：《China Welding》 (中国焊接（英文版）)
年 卷 期：2023年第32卷第1期
页 面：46-52页
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
主 题：lightweight aluminum/steel lap joint friction stir welding interfacial microstructure mechanical property
摘 要：The welding of aluminum(Al)and steel has attracted more and more interest due to the weight reduction trend in vehicle and aerospace manufacturing industries.5182-O/HC260YD+Z lap joint was produced by friction stir welding(FSW),and the microstructure and mechanical property of the joint were systemically *** microstructure in horizontal direction of the Al and steel near interface was similar to their corresponding conventional friction stir welded *** joint was divided into stir zone of Al(ST-Al),stir zone of interface(ST-I),thermal-mechanically affected zone of steel(TMAZ-Fe)and base material of steel(BM-Fe)according to their distinct microstructure *** kinds of intermetallic compounds(IMCs)of FeAl_(3),FeAl and Fe_(3)Al were formed at the *** horizontal micro hardness distribution exhibited a hat shape and“Mshape in Al and steel,*** hardest region of the joint was located at the ST-I,with a hardness of 175 HV−210 *** joint was fractured along the hook structure,with an average shear strength of 73.9 *** morphology of Al and steel indicted a cleavage fracture mode.
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