The research of the auxiliary power of Q235 steel friction stir welding technology and joint microstructure's observation

doi:10.4028/www.scientific.net/AMR.538-541.1451

	The research of the auxiliary power of Q235 steel friction stir welding technology and joint microstructure's observation
	Wang, Xijing; Lu, Yongxin; Liang, Jianli; Ping, Sun
	2012
会议名称	2nd International Conference on Advanced Engineering Materials and Technology, AEMT 2012
会议录名称	Advanced Materials Research
卷号	538-541
页码	1451-1455
会议日期	July 6, 2012 - July 6, 2012
会议地点	Zhuhai, China
出版者	Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany
摘要	Friction Stir Welding (FSW) is a new and developing technology that has been used succefully in the joining of aluminum and aluminum alloys.To demonstrate the feasibility of the auxiliary power of Q235 steel friction stir welding, we used orthogonal test method to design auxiliary power FSW parameter,then welded 200mm×80mm×4mm of Q235 with the parameter. The result shows that the rotating 1200 r/min, the stay time 10s and the heating temperature 700 °C,the welding joint tensile strength can reach 332.19 MPa. Analysing the parameter fracture morphology,we found that the fracture is divided into three levels: the upper part is the ductile fracture; the middle part is the combination of the ductile fracture and the brittle fracture;the lower part is the majority of the brittle fracture, and exists the local ductile fracture. Analysing the microstructure,we found that welding joint is divided into the base zone, the heat affected zone,the thermo-mechanically affected zone and the stir zone,and the microscopic organization of every area is influenced by the heat and the force on the area. The microhardness of stir area improves 12% on average than the base's.The microhardness of the heat affected zone and the thermo-mechanically affected zone decreases, comparing to the base's. © (2012) Trans Tech Publications, Switzerland.
关键词	Aluminum Brittle fracture Friction stir welding Heat affected zone Microhardness Microstructure Soldered joints Auxiliary power Fracture morphology Heating temperatures Joint microstructures Microscopic organization Orthogonal experiment Orthogonal test method Q235 steel Stir zones Thermomechanically affected zones Welding joints
DOI	10.4028/www.scientific.net/AMR.538-541.1451
收录类别	EI
语种	英语
EI入藏号	20124515656386
EI主题词	Ductile fracture
ISSN	10226680
来源库	Compendex
分类代码	421 Strength of Building Materials; Mechanical Properties - 538 Welding and Bonding - 541.1 Aluminum - 933 Solid State Physics - 951 Materials Science
引用统计	被引频次[WOS]：0 [WOS记录] [WOS相关记录]
文献类型	会议论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/117819
专题	材料科学与工程学院
作者单位	State Key Laboratory of Advanced Non-ferrous Materials, Lanzhou University of Technology, Lanzhou 730050, China
第一作者单位	兰州理工大学
推荐引用方式 GB/T 7714	Wang, Xijing,Lu, Yongxin,Liang, Jianli,et al. The research of the auxiliary power of Q235 steel friction stir welding technology and joint microstructure's observation[C]:Trans Tech Publications, P.O. Box 1254, Clausthal-Zellerfeld, D-38670, Germany,2012:1451-1455.