Conclusions
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1.
The addition of 0.10–0.15% V increases the case depth.
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2.
The boride case consists of three phases (FeB, Fe2B, and α solid solution); with increasing amounts of vanadium the amount of FeB increases and also the microhardness of the borides.
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Literature cited
L. S. Lyakhovich and L. G. Voroshnin, Boriding of Steel [in Russian], Metallurgiya, Moscow (1967), pp. 53–70.
V. P. Glukhov, Boride Coatings on Iron and Steels [in Russian], Naukova Dumka, Kiev (1970), pp. 89–126.
Additional information
Kiev Polytechnical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 69–70, March, 1974.
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Trush, I.K., Permyakov, V.G. & Kirchev, B.S. Effect of vanadium on the formation and composition of the boride case on iron. Met Sci Heat Treat 16, 270–271 (1974). https://doi.org/10.1007/BF00663072
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DOI: https://doi.org/10.1007/BF00663072