발간논문

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Vol.19, No.1, 18 ~ 28, 1981
Title
The Effect of High Temperature Thermomechanical Treatment on the Mechanical Properties of AISI H13 Steel
김대훈Dae Hun Kim, 소명기Myoung Gi So, 천성순Seong Sun Chun
Abstract
An investigation has been performed on the effect of high temperature thermomechanical treatment (HTMT) on the mechanical properties, especially strength and toughness of AISI H13 hot work tool steel. The experimental results showed that HTMT increased the strength and toughness of hot work tool steel. 45% deformation at 980℃ increased the yield strength about 9.9% and the impact energy about 60% compared with conventional heat treatment. The improvement is due to the dispersion of fine carbides precipitates within the martensite lath and the refinement of martensite lath size.
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