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HomeMaterials Science ForumMaterials Science Forum Vol. 849Microstructure and Mechanical Properties of Powder...

Microstructure and Mechanical Properties of Powder Metallurgy Ti-22Al-24Nb-0.5Mo Alloys Joints with Electron Beam Welding

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Abstract:

In this work, a Ti₂AlNb based intermetallic alloy with the composition of Ti–22Al–24Nb–0.5Mo (at. %) pre-alloyed powder was firstly produced by gas atomization, and then fully dense powder metallurgy (PM) Ti₂AlNb alloy was prepared by a hot isostatic pressing (HIPing) procedure. The HIPed alloy shows uniform microstructure with low number of porosities. In order to broaden the application field of PM Ti₂AlNb alloys, electron beam welding (EBW) was proposed to join the intermetallics. The joint quality, microstructure and microhardness of PM Ti₂AlNb alloy processed by EBW were characterized, and the results showed that the both base alloy and EBW joints have high metallurgy quality.

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Periodical:

Materials Science Forum (Volume 849)

Pages:

321-326

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.849.321

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Online since:

March 2016

Authors:

Jie Wu, Lei Xu*, Rui Peng Guo, Zheng Guan Lu, Yu You Cui, Rui Yang

Keywords:

Electron Beam Welding, Joint Quality, Microstructure, Powder metallurgy, Ti₂AlNb Alloys

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