Precipitation Behavior of ωo Phase in Ti-37.5Al-12.5Nb Alloy
State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
Authors to whom correspondence should be addressed.
Academic Editor: Tilmann Beck
Received: 27 April 2017 / Revised: 18 May 2017 / Accepted: 19 May 2017 / Published: 26 May 2017
Mutual transformation between α2
phases has been an interesting topic in recent years. In this study, martensitic α2
was obtained by air-cooling from 1250 °C in Ti-37.5Al-12.5Nb (at%) alloy while four ωo
variants formed in the βo
phase matrix during the cooling process. Nonetheless, only one ωo
variant was observed at the periphery of the α2
plates in the βo
phase and the orientation relationship between these two phases was  α2
. Thin γ plates precipitated within the α2
phase and were thought to be related to the appearance of ωo
phase. The redistribution of the compositions during the phase transformations was studied by energy dispersive X-ray spectroscopy analysis. The corresponding mechanisms of the phase transformations mentioned above are discussed.
This is an open access article distributed under the Creative Commons Attribution License
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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MDPI and ACS Style
Ye, T.; Song, L.; Quan, M.; He, J.; Lin, J. Precipitation Behavior of ωo Phase in Ti-37.5Al-12.5Nb Alloy. Metals 2017, 7, 192.
Ye T, Song L, Quan M, He J, Lin J. Precipitation Behavior of ωo Phase in Ti-37.5Al-12.5Nb Alloy. Metals. 2017; 7(6):192.
Ye, Teng; Song, Lin; Quan, Maohua; He, Jianping; Lin, Junpin. 2017. "Precipitation Behavior of ωo Phase in Ti-37.5Al-12.5Nb Alloy." Metals 7, no. 6: 192.
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