Secondary Carbide Precipitation in Low Silicon Hot Work Tool Steels

Rafael Agnelli Mesquita; Celso Antonio Barbosa; E. Valencia Morales; H.J. Kestenbach

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

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Precipitation Kinetics of Aluminium Nitride in Austenite in Microalloyed HSLA Steels
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Secondary Carbide Precipitation in Low Silicon Hot Work Tool Steels
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Microstructural Evolution Modelling of Nickel Base Superalloy during Forging
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HomeMaterials Science ForumMaterials Science Forum Vols. 636-637Secondary Carbide Precipitation in Low Silicon Hot...

Secondary Carbide Precipitation in Low Silicon Hot Work Tool Steels

Abstract:

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.

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Periodical:

Materials Science Forum (Volumes 636-637)

Pages:

612-617

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.636-637.612

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Online since:

January 2010

Authors:

Rafael Agnelli Mesquita, Celso Antonio Barbosa, E. Valencia Morales, H.J. Kestenbach

Keywords:

Cementite, Electron Microscopy, Secondary Carbide, Silicon, Tool Steel, Toughness

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References

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