High Temperature Oxidation Behavior of Ti2AlNb Intermetallic Alloys

doi:10.15344/2455-2372/2015/112

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International Journal of Metallurgical & Materials Engineering Volume 1 (2015), Article ID 1:IJMME-112, 6 pages
http://dx.doi.org/10.15344/2455-2372/2015/112

Research Article

High Temperature Oxidation Behavior of Ti₂AlNb Intermetallic Alloys

Jeoung Han Kim^1*, S. Emura² and Yong Tai Lee³

¹Department of Advanced Materials Engineering, Hanbat National University, Daejeon, Republic of Korea
²Structural Metals Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
³Titanium Alloys Group, KoreaInstitute of Materials Science, Kyungnam Changwon66, Republic of Korea

Corresponding Author Details: Jeoung Han Kima , Department of Advanced Materials Engineering, Hanbat National University, Daejeon, Republic of Korea; E-mail: jh.kim@hanbat.ac.kr

Received: 02 May 2015; Accepted: 25 August 2015; Published: 27 August 2015

Citation: Kim JH, Emura S, Lee YT (2015) High Temperature Oxidation Behavior of Ti₂AlNb Intermetallic Alloys. Int J Metall Mater Eng 1: 112. doi: http://dx.doi.org/10.15344/2455-2372/2015/112

Copyright: © 2015 Kim et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

In the present work, oxidation behavior of microstructure of oxide scale of Ti-22Al-27Nb, Ti-22Al- 20Nb-2W, and Ti-25Al-14Nb-2Mo-1Fe is investigated. Ti-25Al-14Nb-2Mo-1Fe demonstrated more excellent oxidation resistance than the other two alloys. Oxide layer was varied with Nb content which modifies the formation mechanism of Al2O3 oxide layer by hindering the diffusion of Al. In contrast, the effect of Mo, Fe, and W on the oxidation behavior was not very significant.

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