首页|High-speed electron beam sintering of WC-8Co under controlled temperature conditions
High-speed electron beam sintering of WC-8Co under controlled temperature conditions
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NSTL
Elsevier
In this study, we have firstly proposed a high-speed electron beam sintering technique for producing fully dense submicron-grained WC-8Co hardmetals. A distinctive feature of the sintering process is the controlled stress-strain state by varying thermal stresses during local electron beam heating at different rotation speed (0.1; 1.0; 2.5 mm/s) of a cylindrical powder compact. As a result, the sintering time of porous compacts to full density does not exceed 150 s. The experimental and calculated results indicate that the main requirement for obtaining well-sintered material is the shrinkage rate should be less or equal to the rate of thermal expansion of the sample segments subjected to repeated local heating.
NSTL
Elsevier
