Structural changes in molten high-speed steels before atomizing
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Molten high-speed steel R6M5F3 has been studied by the x-ray method under different temperature and time conditions. It has been found that transformations of the microheterogeneous structure of the melt with an increase in temperature to 1750°C are associated with a change in atom packing both within microgroups of Fe (γ → δ) and in microregions enriched in carbon (Me6C, Me2C → MeC). The structural state of high-speed steel powders as a result of temperature-time treatment of the melt varies considerably: There is a high degree of homogeneity due to an increase in the fineness and similarity of carbide-like regions.
KeywordsStructural Change Structural State Time Condition Steel Powder Microheterogeneous Structure
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