Conclusions
The presence of δ-phase and decomposition of martensite in fine particles as a result of heating by large particles alter the relative intensities of the austenite and martensite lines. Because of this, determination of the amount of residual austenite in a fine fraction by the existing x-ray methods gives low results. A more accurate estimate of the amounts of residual austenite in fine and coarse particles is obtained by measuring the areas of corresponding austenite lines.
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Translated from Poroshkovaya Metallurgiya, No. 11(275), pp. 6–8, November, 1985.
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Popandopulo, A.N., Kalinina, V.I. Effect of particle size on the amount of residual austenite in atomized high-speed steel powders. Powder Metall Met Ceram 24, 789–791 (1985). https://doi.org/10.1007/BF00802542
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DOI: https://doi.org/10.1007/BF00802542