Research Progress on Additive Manufacturing of TiAl-based Alloys

doi:10.3901/JME.2021.08.115

Abstract

Abstract: TiAl-based alloys are a novel lightweight high-temperature structural material with high potential in aviation and aerospace fields. Additive manufacturing is an advanced rapid near-net shape forming technology, which is quite suitable for the manufacture of high-temperature structural parts of aerospace engines with complex structure and high precision requirements. Referring to the published literatures, the research progress on additive manufacturing technologies of TiAl-based alloys, including the principle, advantages and latest development of laser melting deposition, selective laser melting, selective electron beam melting and wire-arc additive manufacturing methods, as well as the research status of TiAl-based composite materials and correlative composite materials were reviewed. The obstacle of additive manufacturing technologies of TiAl-based alloys was analyzed. And some prospects were put forward, including composition design of TiAl-based alloys for additive manufacturing, process optimization and improvement of microstructure and mechanical properties, development of new TiAl-based materials, application of hybrid additive manufacturing.

Key words: TiAl-based alloys, additive manufacturing, microstructure, mechanical property

CLC Number:

TG156

QIN Renyao, ZHANG Guodong, LI Neng, LIU Wei, HUANG Shuai, XIONG Huaping. Research Progress on Additive Manufacturing of TiAl-based Alloys[J]. Journal of Mechanical Engineering, 2021, 57(8): 115-132.

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