Abstract
Welding and joining of titanium aluminides is the key to making them more attractive in industrial fields. The purpose of this review is to provide a comprehensive overview of recent progress in welding and joining of titanium aluminides, as well as to introduce current research and application. The possible methods available for titanium aluminides involve brazing, diffusion bonding, fusion welding, friction welding and reactive joining. Of the numerous methods, solid-state diffusion bonding and vacuum brazing have been most heavily investigated for producing reliable joints. The current state of understanding and development of every welding and joining method for titanium aluminides is addressed respectively. The focus is on the fundamental understanding of microstructure characteristics and processing–microstructure–property relationships in the welding and joining of titanium aluminides to themselves and to other materials.
Highlights
Titanium aluminides have attracted great interest due to their high melting point, low density, high elastic ratio and good oxidation resistance [1,2,3]
Considerable attention has been paid to welding and joining of titanium aluminides, which consisted of γ-TiAl [14,15] and α2-Ti3Al [16,17] based alloys, to themselves and to other materials
This paper presents a brief review on current progress in the area of welding and joining of titanium aluminides
Summary
Titanium aluminides have attracted great interest due to their high melting point, low density, high elastic ratio and good oxidation resistance [1,2,3]. Intensive activity has been reported on the research and development of advanced titanium aluminides for high temperature structural applications during the last two decades [4,5,6]. There has been significant progress in the development of these alloys recently, in improving the low ambient temperature ductility and workability [6,8,9], welding and joining of titanium aluminides is still one of the keys to their successful integration into high temperature aerospace and automobile applications [2,10,11,12,13]. Considerable attention has been paid to welding and joining of titanium aluminides, which consisted of γ-TiAl [14,15] and α2-Ti3Al [16,17] based alloys, to themselves and to other materials
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