1. Microstructure and Mechanical Properties of W-Al 2 O 3 Alloy Plates Prepared by a Wet Chemical Method and Rolling Process.
- Author
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Wang, Changji, Dong, Xiaonan, Liu, Yao, Wei, Shizhong, Pan, Kunming, Zhang, Cheng, Xiong, Mei, Mao, Feng, Jiang, Tao, Yu, Hua, Wang, Xiaodong, and Chen, Chong
- Subjects
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TUNGSTEN alloys , *ALLOY plating , *MICROSTRUCTURE , *DISPERSION strengthening , *TUNGSTEN , *COMPRESSIVE strength - Abstract
The uneven distribution and large size of the second phase weakens the effect of dispersion strengthening in ODS-W alloys. In this article, the W-Al2O3 composite powders were fabricated using a wet chemical method, resulting in a finer powder and uniformly dispersed Al2O3 particles in the tungsten-based alloy. The particle size of the pure tungsten powder is 1.05 μm and the particle size of W-0.2 wt.%Al2O3 is 727 nm. Subsequently, the W-Al2O3 alloy plates were successfully obtained by induction sintering and rolling processes. Al2O3 effectively refined grain size from powder-making to sintering. The micro-hardness of the tungsten alloy plates reached 512 HV0.2, which is 43.7% higher than that of pure tungsten plates. The nano-hardness reached 14.2 GPa, which is 24.1% higher than that of the pure tungsten plate; the compressive strength reached 2224 MPa, which is 37.2% higher than that of the pure tungsten. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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