Acta Metall Sin  1998, Vol. 34 Issue (11): 1167-1172    DOI:

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SOLID-STATE JOINING OF TiAl BASED ALLOYS

HE Yuehui;HUANG Baiyun;WANG Bin;LIU Yong;WANG Jiannong(State Key Laboratory for Powder Metallurgy;Central South University of Technology; Changsha 410083) GUO Jingjie (Materials Science College; Harbin University of Technology; Harbin 150001)

HE Yuehui;HUANG Baiyun;WANG Bin;LIU Yong;WANG Jiannong(State Key Laboratory for Powder Metallurgy;Central South University of Technology; Changsha 410083) GUO Jingjie (Materials Science College; Harbin University of Technology; Harbin 150001). SOLID-STATE JOINING OF TiAl BASED ALLOYS. Acta Metall Sin, 1998, 34(11): 1167-1172.

Abstract References Related Articles Recommended Metrics Download:  PDF(1862KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Solid-state joining between TiAl based alloy samples with various microstructures was investigated. When joining between coarse-grained TiAl based alloys, a fine recrystallized microstructure, which was different from those of the substrates, formed in the joining interface. When joining between a coarse-grained TiAl based alloy and an alloy of fine duplex microstructure, the coarse-grained part was penetrated by the fine-grained part due to its high superplasticity, and good joining interface was obtained. When solid joining between fine-grained parts, because both parts had high superplasticity, perfect joining interface with the microstructure of substrate was obtained through grains sliding in thermal plastic deformation, and the joining component had high mechanical properties (σba=533 MPa and δ≈2%). So all the fracture occurred away from the joining interface. Key words:  TiAl based alloy      welding      mechanical property      microstructure      Received:  18 November 1998      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1998/V34/I11/1167 1Lipsitt H A. Metall Trans, 1975;6A:1991 2信木稔,桥本健纪,还本得藏,浅并羲一.日本金属学会志,1986;50(9):840(Nobuki M,Hashimoto K,Tsujimoto T,Azai Y.J Jpn Inst Met, 1986; 50(9): 840) 3笠原和男,桥本健纪,土肥春夫,还本得藏.日本金属学会志.1989;53(1):58(Kashar K,hashimoto K,Doi H,Tsujimoto T. J Jpn Inst Met,1989;53(1):58) 4Koepee C. Metall Trans; 1993; 24A: 1795 S He Y H,Huang B Y.Acta Metall Sin,1997;234:369 6贺跃辉,黄伯云.材料研究学报,1996;(6):606(He Y H, Huang B Y. Chin J Mater Res,1996;(6):606) 7 Baeslack W A. Weld J, 1989; 68(12):4835 8David S A. Weld J, 1990; 69(4):133S 9 Cieslak M J. 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