Effect of deposition layer on microstructure of Ti-Al bimetallic structures fabricated by wire and arc additive manufacturing

被引：13

作者：

Tian, Yinbao ^{[1
,2
,3
]}

Shen, Junqi ^{[2
,3
]}

Hu, Shengsun ^{[2
]}

Chen, Xinya ^{[1
,4
]}

Cai, Yangchuan ^{[1
,4
]}

Han, Jian ^{[1
,4
]}

机构：

[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China

[2] Tianjin Univ, Sch Mat Sci & Engn, Tianjin, Peoples R China

[3] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA

[4] Adv Mat Proc & Mfg Res Inst, Tianjin, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2022年 / 27卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Wire and arc additive manufacturing; Ti alloy; Al alloy; microstructure; interface structure; deposition layer; MECHANICAL-PROPERTIES; STAINLESS-STEEL; GROWTH;

D O I：

10.1080/13621718.2021.1996850

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ti-Al bimetallic components present extensive application prospects and have attracted considerable attention owing to their low cost and light weight. In this study, Ti-Al bimetallic structures with one, two, and five Al layers were fabricated via wire and arc additive manufacturing by cold metal transfer welding. During the deposition process of the first Al layer, the matrix was TiAl, and a needle-shaped Ti3Al was formed. Subsequently, from the second deposition layer of the Al alloy, however, TiAl3 was formed, and it exhibited an exceptional morphology with two types of structures: coarse columnar grain structures with identical growth orientation, and long strip-like structures with a random distribution. The formation order of Ti-Al intermetallic compounds was TiAl3, TiAl, and Ti3Al.

引用

页码：22 / 32

页数：11

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