Transformations with liquid phase presence in sintering of powder high-speed steel
Journal Title: Metallurgical and Mining Industry - Year 2017, Vol 9, Issue 1
Abstract
The regularities of phase and structural transformations are studied in composition diffusion change within the compacted powder mixture of alloys, in which the alloying elements concentration corresponds to a standard high-speed steel, but carbon content is different. In one component of the mixture, the carbon percentage does not exceed 0.2% while in the other one it is close to the eutectic mixture (~3.8 %). The method of geometrical thermodynamics is applied to determine the diffusion streams at leveling off the carbon concentration in the powder mixture during heating and holding at temperature higher than a melting temperature of the eutecticum. In the paper, we show the dependency regularities of carbide phase transformation while sintering its volume fraction and holding time.
Authors and Affiliations
A. V. Movchan, A. P. Bachurin, E. A. Chernoivanenko
Keywords
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