Email this article Microstructure Homogeneity and Mechanical Properties of Large-Size As-Cast High Nb Containing TiAl Alloy Ingot
- Authors: Xu M.1,2, Zhang C.J.1,2, Han J.C.3, Chen Y.F.4, Kong F.T.5, Chen Y.Y.5, Zhang S.Z.1,2
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Affiliations:
- School of Materials Science and Engineering, Taiyuan University of Technology
- Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology
- School of Mechanical Engineering, Taiyuan University of Technology
- Ningbo Branch of China Ordnance Academy
- National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology
- Issue: Vol 119, No 9 (2018)
- Pages: 899-906
- Section: Strength and Plasticity
- URL: https://journals.rcsi.science/0031-918X/article/view/167832
- DOI: https://doi.org/10.1134/S0031918X1809017X
- ID: 167832
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Abstract
The high Nb containing TiAl alloy with a nominal composition of Ti–44Al–8Nb–0.2W–0.2B–0.1Y was fabricated by a Vacuum Arc Remelting furnace. The microstructure and mechanical properties of specimens located in different sites of the ingot were investigated. Owing to the influence of melting process and electrode fabricating method, the morphologies and phase containing of this near lamellar structure in the top, middle, and bottom parts of ingot were different. The subtle difference in microstructure strongly influenced the room and high-temperature tensile properties in turn. However, the dominant influence factor of the mechanical properties was the defects at the bottom of this large-size ingot, though the bottom had the finest grain size.
About the authors
M. Xu
School of Materials Science and Engineering, Taiyuan University of Technology; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology
Email: hanjianchao@tyut.edu
China, Taiyuan, 030024; Taiyuan, 030024
C. J. Zhang
School of Materials Science and Engineering, Taiyuan University of Technology; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology
Email: hanjianchao@tyut.edu
China, Taiyuan, 030024; Taiyuan, 030024
J. C. Han
School of Mechanical Engineering, Taiyuan University of Technology
Author for correspondence.
Email: hanjianchao@tyut.edu
China, Taiyuan, 030024
Y. F. Chen
Ningbo Branch of China Ordnance Academy
Email: hanjianchao@tyut.edu
China, Ningbo, 315000
F. T. Kong
National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology
Email: hanjianchao@tyut.edu
China, Harbin, 150001
Y. Y. Chen
National Key Laboratory for Precision Hot Processing of Metals, Harbin Institute of Technology
Email: hanjianchao@tyut.edu
China, Harbin, 150001
S. Z. Zhang
School of Materials Science and Engineering, Taiyuan University of Technology; Shanxi Key Laboratory of Advanced Magnesium-based Materials, Taiyuan University of Technology
Author for correspondence.
Email: zhshzh1984@163.com
China, Taiyuan, 030024; Taiyuan, 030024
