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The effect of partial substitution of nb for v on austenite grain size and hardness of a tool steel

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Abstract

In the present work, the composition of H- 13 tool steel was modified with respect to the vanadium content to include an addition of niobium to obtain improved austenite grain size control without altering the tempering response of the steel. Optical metallography and transmission electron microscopy (TEM) observation of extraction replicas showed that the new steel had a smaller austenite grain size and a finer carbide size distribution than the vanadium steel, which indicates a higher potential toughness.

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Elias, C.N., Da Costa Viana, C.S. The effect of partial substitution of nb for v on austenite grain size and hardness of a tool steel. JMEP 1, 751–754 (1992). https://doi.org/10.1007/BF02658257

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