Microstructure, Strengthening Mechanism and Mechanical Properties of Vanadis 60-Ta<sub>0.5</sub>Nb<sub>0.5</sub>C-B<sub>4</sub>C High-speed Steel Composite via Vacuum Sintering, Sub-zero, and Heat Treatments
Kuo-Tsung Huang,
Shih-Hsien Chang,
Che-Wei Chang
Abstract:This research added different ratios of Ta 50 Nb 50 C and B 4 C powders to Vanadis 60 high-speed steel powders, and then, sintered the Vanadis 60 composite from 1205 to 1225°C by vacuum sintering for 1 hour. Subsequently, a series of heat treatments were conducted, including quenching, sub-zero, and tempering processes. The study results show that the optimal sintering temperature and the additive ratio for Vanadis 60 composites were 1205°C and 0.975 mass% Ta 50 Nb 50 C-0.025 mass% B 4 C powders, respectively.… Show more
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