Research Progress of Ti-Al Reaction Diffusion Mechanism and Kinetics(Part Ⅱ)
The Ti-Al system intermetallic compounds and composites fabricated from Ti and Al,such as TiAl3,α-TiAl and α2-Ti3Al intermetallic compounds,and Ti/Al,Ti/α2-Ti3Al,Ti/γ-TiAl,Ti/TiAl3,Ti/TiAl3/Al and Al/TiAl3 metal-metal and metal-intermetallic compound composites,have good application prospects in aerospace,automotive and other fields owing to their excellent physical,chemical and mechanical properties.The preparation of the above materials involves a variety of Ti-Al reaction diffusion processes.Therefore,an in-depth understanding of Ti-Al reaction diffusion mechanism and kinetics will help to prepare Ti-Al intermetallic compounds and composites reasonably and efficiently.At present,Ti-Al reaction diffusion mechanism and kinetics have been extensively studied,but there are still many divergences on some conclusions.In part Ⅱ of this paper,the research progress of Ti-Al reaction diffusion kinetics involved in the preparation of Ti-Al intermetallic compounds and composites was reviewed,and the future research direction of Ti-Al reaction diffusion kinetics was prospected.
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