Conclusions
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1.
Microadditions of boron do not influence decomposition of martensite in in tempering of steels hardened from the normal temperature.
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2.
As the result of formation of a stable polygonal structure blocked by dispersed particles of the boron-containing phase recrystallization is difficult, which leads to retarding of the process of softening of boron-containing steels in tempering after high-temperature hardening.
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Additional information
Tula Polytechnic Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 4–6, September, 1991.
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Grinberg, E.M., Laricheva, G.G. & Miroshnik, E.S. Influence of boron on the transformations of steel in tempering. Met Sci Heat Treat 33, 650–654 (1991). https://doi.org/10.1007/BF00811724
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DOI: https://doi.org/10.1007/BF00811724