1. Optimization of Initial WC Grain-Size Distribution in WC-6Ni Cemented Carbides.
- Author
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Shi, Kai-hua, Zhou, Ke-chao, Li, Zhi-you, and Zan, Xiu-qi
- Subjects
TUNGSTEN carbide ,PARTICLE size distribution ,MICROSTRUCTURE ,CORROSION resistance ,NICKEL - Abstract
The initial WC grain-size distribution, as one of the most important factors influencing the properties of alloys, has been focused on for a long time in some fields other than cemented carbides. In the present work, five groups of WC-6Ni cemented carbides were prepared and the effect of initial WC grain-size distribution on the microstructure and properties of the hard alloys was studied. The results indicate that initial WC grain-size distribution has significant influence on the microstructure and properties of WC-6Ni cemented carbides, except density. When the mass ratio of coarse-WC and fine-WC is 7:3, WC-6Ni cemented carbide samples with initial WC grain-size distribution of WC-1(4.8 μm) and WC-4(0.7 μm) show a relatively good combination properties, while the cemented carbide samples with WC-5(0.4 μm) as the fine-WC component exhibit higher values on some properties, mainly hardness and immersion corrosion resistance in acid and alkali. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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