Effects of cold metal transfer mode on the reaction layer of wire and arc additive-manufactured Ti-6Al-4V/Al-6.25Cu dissimilar alloys

作     者：Yinbao Tian Junqi Shen Shengsun Hu Jian Gou Yan Cui Yinbao Tian;Junqi Shen;Shengsun Hu;Jian Gou;Yan Cui

作者机构：Tianjin Key Laboratory of Advanced Joining TechnologyTianjin UniversityTianjin 300354China School of Materials Science and EngineeringTianjin UniversityTianjin 300354China Department of Mechanical EngineeringUniversity of MichiganAnn ArborMI 48109USA 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第74卷第15期

页      面：35-45页

核心收录：

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] 

基　　金：National Natural Science Foundation of China(grant number 52075377 and 51575381) Tianjin Research Program of Application Foundation and Advanced Technology(grant number 15JCZDJC38600) supported by the China Scholarship Council(No.201706255090 and No.201806250043) 

主　　题：Ti/Al dissimilar alloys Wire and arc additive manufacturing Reaction layer Microstructure Mechanical properties 

摘      要：Components of Ti and Al dissimilar alloys were obtained by wire and arc additive manufacturing using two cold metal transfer(CMT)*** current CMT(DC-CMT)mode was used for Ti alloy deposition,and DC-CMT or CMT plus pulse(CMT+P)mode was used for the Al alloy *** deposition of the first Al alloy layer,little and a significant amount of Ti alloy were melted using DC-CMT and CMT+P mode,***_(3)formed in the reaction layer when DC-CMT mode was used,while TiAl_(3),TiAl,and Ti3Al formed in the reaction layer when CMT+P mode was *** to using DC-CMT mode,more cracks occurred when using CMT+*** nanohardness of the reaction layer was between that of the Al and Ti alloys,irrespective of the CMT *** average tensile strengths of the samples using DC-CMT and CMT+P mode were 108 MPa and 24 MPa,***-CMT mode was more suitable for the wire and arc additive manufacturing of Ti/Al dissimilar alloys.