- POWDER METALLURGY Journal
- January 2016
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- The use of low melting point master alloy (MA) powders contributes beneficially to sintering by increasing the distribution rate of alloying elements, enhancing homogenisation and sometimes also promoting densification. However, working with liquid phases poses important challenges like maintaining a proper dimensional control and minimising the effect of secondary porosity on the final performance of the steel. In this work, three different MA systems are compared: a low dissolutive Cu-based MA, and two systems with a higher degree of iron dissolution but different content in oxidation-sensitive elements.
- master alloys; liquid phase design; wetting; liquid-solid interaction; oxidation-sensitive elements; dimensional stability; microstructural evolution; low alloy sintered steels; pm steels; systems; performance; behavior; design