Influence of oxygen on the solidification behavior of high-Nb TiAl alloys

Y. L. Yang, J. S. Li, H. Zhong, T. B. Zhang, H. C. Kou, R. Hu, H. Chang

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

The influence of oxygen on the solidification behavior of an as-cast TiAl-based alloy has been studied. Alloys with composition of Ti-49Al-10Nb (in at. %) were prepared by non-consumable vacuum are remelting. Each of the alloys was melted with an oxygen content around 0. 1,0. 8 and 1.5 at. %. it's observed that the microstructure modification added by Nb can be removed when increase oxygen content. And the presence of the remarkable amount of α2 phase indicates that in high Nb-TiAl alloys, the primary solidification phase can also be turned from β to α due to the α stabilizing effect of oxygen. But when continuously increasing the oxygen content, the α2 phase content decreases. The proportion of α2 phase shows a tendency of first increase and then decrease with the increasing oxygen content.

源语言英语
主期刊名Ti 2011 - Proceedings of the 12th World Conference on Titanium
1478-1480
页数3
出版状态已出版 - 2012
活动12th World Conference on Titanium, Ti 2011 - Beijing, 中国
期限: 19 6月 201124 6月 2011

出版系列

姓名Ti 2011 - Proceedings of the 12th World Conference on Titanium
2

会议

会议12th World Conference on Titanium, Ti 2011
国家/地区中国
Beijing
时期19/06/1124/06/11

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