Multi-physical modelling of alloy element transportation in wire arc additive manufacturing of a ?-TiAl alloy*

被引：21

作者：

Xin, Jianwen ^{[1
]}

Wu, Dongsheng ^{[2
]}

Shen, Chen ^{[1
]}

Wang, Lin ^{[1
]}

Hua, Xueming ^{[1
]}

Ma, Ninshu ^{[2
]}

Tashiro, Shinichi ^{[2
]}

Tanaka, Manabu ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Shanghai Key Lab Mat Laser Proc & Modificat, Shanghai 200240, Peoples R China

[2] Osaka Univ, JWRI, 11-1 Mihogaoka, Osaka 5670047, Japan

来源：

INTERNATIONAL JOURNAL OF THERMAL SCIENCES | 2022年 / 179卷

关键词：

Wire arc additive manufacturing; TiAl alloy; Element distribution; Wire transfer; NUMERICAL-SIMULATION; HEAT-TRANSFER; MICROSTRUCTURE; PHASE;

D O I：

10.1016/j.ijthermalsci.2022.107641

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

How to obtain homogeneous element distribution is a challenging research in wire arc additive manufacturing (WAAM) of gamma-TiAl alloys, and the wire transfer has a great influence on it. A multi-physical numerical model considering the dissimilar wire feeding and melting, and element mixing is developed, and a high-speed video camera is adopted to investigate the wire transfer behaviors in WAAM of a gamma-TiAl alloy. The Ti and Al elements can be transferred to the molten pool through a liquid TiAl bridge. However, the liquid TiAl bridge is not very stable, and the breakup between the Al wire and liquid TiAl bridge can be observed. The wetting ability (wetting angle) of the liquid TiAl metal on the Ti wire surface can be used to predict the possibility of the liquid TiAl bridge breakup. The surface tension causes backward flow and growth of a liquid TiAl droplet, and thus suppresses the droplet transfer.

引用

页数：8

共 38 条

[1] Numerical analysis of heat transfer and fluid flow in multilayer deposition of PAW-based wire and arc additive manufacturing [J].

Bai, Xingwang ;

Colegrove, Paul ;

Ding, Jialuo ;

Zhou, Xiangman ;

Diao, Chenglei ;

Bridgeman, Philippe ;

Honnige, Jan Roman ;

Zhang, Haiou ;

Williams, Stewart .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2018, 124 :504-516

[2] Wire arc additive manufacturing of titanium aluminide alloys using two-wire TOP-TIG welding: Processing, microstructures, and mechanical properties [J].

Cai, Xiaoyu ;

Dong, Bolun ;

Yin, Xianlai ;

Lin, Sanbao ;

Fan, Chenglei ;

Yang, Chunli .

ADDITIVE MANUFACTURING, 2020, 35

[3] Impact of driving forces on molten pool in gas metal arc welding [J].

Cho, Won-Ik ;

Na, Suck-Joo .

WELDING IN THE WORLD, 2021, 65 (09) :1735-1747

[4] Numerical study of alloying element distribution in CO2 laser-GMA hybrid welding [J].

Cho, Won-Ik ;

Na, Suck-Joo ;

Cho, Min-Hyun ;

Lee, Jong-Sub .

COMPUTATIONAL MATERIALS SCIENCE, 2010, 49 (04) :792-800

[5]

Doubenskaia M., 2017, P LASERS MANUFACTURI, P26

[6] Study of Selective Laser Melting of intermetallic TiAl powder using integral analysis [J].

Doubenskaia, Maria ;

Domashenkov, Alexey ;

Smurov, Igor ;

Petrovskiy, Pavel .

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2018, 129 :1-14

[7]

DUPONT JN, 1995, WELD J, V74, pS406

[8] Numerical simulation of alloy composition in dissimilar laser welding [J].

Esfahani, M. R. Nekouie ;

Coupland, J. ;

Marimuthu, S. .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2015, 224 :135-142

[9] Modeling analysis of hybrid laser-arc welding of single-crystal nickel-base superalloys [J].

Gao, Zhiguo ;

Ojo, O. A. .

ACTA MATERIALIA, 2012, 60 (6-7) :3153-3167

[10] Microstructure of γ-titanium aluminide processed by selective laser melting at elevated temperatures [J].

Gussone, Joachim ;

Hagedorn, Yves-Christian ;

Gherekhloo, Human ;

Kasperovich, Galina ;

Merzouk, Tank ;

Hausmann, Joachim .

INTERMETALLICS, 2015, 66 :133-140

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