Secondary Carbide Precipitation in Low Silicon Hot Work Tool Steels

Abstract:

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A reduction from 1.0 to 0.3%Si has recently been shown to improve mechanical properties of H11-type hot work tool steels. The present paper shows that an important improvement in toughness can be explained by the effect of Si content on the precipitation sequence of secondary carbides during tempering after quenching. Carbide particle distributions were observed and identified by electron microscopy, allowing to relate the effect of Si on mechanical properties directly to its effect on cementite and subsequent alloy carbide formation during high temperature tempering.

Info:

Periodical:

Materials Science Forum (Volumes 636-637)

Edited by:

Luís Guerra ROSA and Fernanda MARGARIDO

Pages:

612-617

DOI:

10.4028/www.scientific.net/MSF.636-637.612

Citation:

R. A. Mesquita et al., "Secondary Carbide Precipitation in Low Silicon Hot Work Tool Steels ", Materials Science Forum, Vols. 636-637, pp. 612-617, 2010

Online since:

January 2010

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Price:

$35.00

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