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所属单位：材料科学与技术学院
发表刊物：MATERIALS RESEARCH EXPRESS
关键字：consumable friction plug welding TC4 titanium alloy friction stir welding microstructure
摘要：In this paper, a technique of consumable friction plug welding (CFPW) was introduced in the welding of TC4 plate for repairing the keyhole and defects. A semi-consumable friction head composed of a nickel base super-alloy clamping shoulder and a titanium alloy plug was designed. Several defect-free welded samples have been obtained and the process window of CFPW for TC4 plate has been explored. The process window of CFPW for TC4 alloy was very narrow. The cross sections of CFPW joint were divided into five zones with different microstructure. The final microstructure in the thermal deformation (TD) zone was refined. The ultimate tensile strength and elongation of the CFPW samples were both up to 85% of the base metal, and the base heat affected (BHA) zone was a weak region in the joint. The hardness fluctuation of joint cross section was closely related to the change of microstructure in different welding zones
ISSN号：2053-1591
是否译文：否
发表时间：2019-09-01
合写作者：Li, Junping,Yan, Yinfei,Tang, Jingming,Hou, Wentao,Huang, Guoqiang,
通讯作者：沈以赴