Synergistic Effect of Nb and Mo on the Oxidation Behavior of TiAl-based Alloys

Home > Archive>Volume 41, Issue 1, 2012 >33-37

Synergistic Effect of Nb and Mo on the Oxidation Behavior of TiAl-based Alloys
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Affiliation:State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi, 710072, China,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University
Clc Number:TG146.2
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Abstract:

TiAl-based alloys with Nb/Mo were obtained by the cold crucible induction levitation melting method. The oxidation behavior in air at 900℃ for various time were investigated. The phase composition, microstructure and the interface of oxidation film and matrix were investigated with the help of XRD, SEM equipped with EDS. Combined with the oxidation kinetic analysis, it is expected to explore the synergistic effect of Nb and Mo on the oxidation behavior of TiAl-based alloys. With the addition of Nb and Mo, the continuous compact oxidation film decreases the oxidating rate and the mass gain which makes alloy preserve better oxidation properties comparing with that of Ti-46Al-6Nb. Due to the synergistic effect of Nb and Mo, the indiffusion of oxygen atoms could be prevented and the oxidation properties of TiAl-based alloys could be improved significantly.

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[Zhang Tiebang, Ding Hao, Deng Zhihai, Zhong Hong, Hu Rui, Xue Xiangyi, Li Jinshan. Synergistic Effect of Nb and Mo on the Oxidation Behavior of TiAl-based Alloys[J]. Rare Metal Materials and Engineering,2012,41(1):33~37.]
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Received:July 15,2011
Revised:September 04,2011
Adopted:September 20,2011
Online: November 08,2018
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