材料科学技术(英文版)2021，Vol.74Issue(15) ：35-45.

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

Yinbao Tian Junqi Shen Shengsun Hu Jian Gou Yan Cui
材料科学技术(英文版)2021，Vol.74Issue(15) ：35-45.
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Effects of cold metal transfer mode on the reaction layer of wire and arc additive-manufactured Ti-6Al-4V/Al-6.25Cu dissimilar alloys

Yinbao Tian 1Junqi Shen 1Shengsun Hu 2Jian Gou 2Yan Cui2
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作者信息

  • 1. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300354, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China;Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
  • 2. Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300354, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300354, China
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Abstract

Components of Ti and Al dissimilar alloys were obtained by wire and arc additive manufacturing using two cold metal transfer (CMT) modes.Direct 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.During deposition of the first Al alloy layer,little and a significant amount of Ti alloy were melted using DC-CMT and CMT +P mode,respectively.TiAl3 formed in the reaction layer when DC-CMT mode was used,while TiAl3,TiAl,and Ti3Al formed in the reaction layer when CMT + P mode was used.Compared to using DC-CMT mode,more cracks occurred when using CMT + P.The nanohardness of the reaction layer was between that of the Al and Ti alloys,irrespective of the CMT modes.The average tensile strengths of the samples us ingDC-CMT and CMT + P mode were 108 MPa and 24 MPa,respectively.DC-CMT mode was more suitable for the wire and arc additive manufacturing of Ti/Al dissimilar alloys.

Key words

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

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基金项目

research funding by National Natural Science Foundation of China(52075377)

research funding by National Natural Science Foundation of China(51575381)

Tianjin Research Program of Application Foundation and Advanced Technology(15JCZDJC38600)

This work was supported by the China Scholarship Council(201706255090)

This work was supported by the China Scholarship Council(201806250043)

出版年

2021
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI
影响因子：0.657
ISSN：1005-0302
被引量1
参考文献量45
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