Nature of the liquid phase forming during the sintering of R6M5 steel produced from machining waste
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A thermogravimetric and electron microscopical investigation has been carried out into the nature and composition of the oxycarbide eutectic appearing at the grain boundaries of R6M5 steel at sintering temperatures below 1220°C. The need for two-stage sintering of R6M5 steel from machining waste as a means of obtaining nonporous blanks is explained. Optimum sintering conditions have been established, which are determined by the particle size of the powder and its oxygen content.
KeywordsOxygen Particle Size Liquid Phase Oxygen Content Microscopical Investigation
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