Hardness and Microstructure of Partially Austenitized 43XX Steel.
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS
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A study was made of microstructures of several partially austenitized 43XX steels. By quenching from temperatures below those at which complete austenitization would occur, microstructures of martensite with ferrite andor cementite were obtained. Microstructural analysis enabled the phase boundaries of the pertinent section of the phase diagram to be determined. Hardness changes in the as-quenched structures were correlated with the phase diagram. The major factor controlling the as-quenched hardness is the volume fraction and carbon content of the martensite in the structure. Author
- Properties of Metals and Alloys