Understanding the factors controlling the hardness in martensitic steels
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- 作者：E.I. Galindo-Nava ; eg375@cam.ac.uk" class="auth_mail" title="E-mail the corresponding author ; P.E.J. Rivera-Dí ; az-del-Castillo
- 关键词：Martensitic steels ; Hardness ; Tempering ; Dislocation ; Modeling
- 刊名：Scripta Materialia
- 出版年：2016
- 出版时间：1 January 2016
- 年：2016
- 卷：110
- 期：Complete
- 页码：96-100
- 全文大小：441 K
文摘
A unified description for the hardness in martensitic steels for a wide range of carbon contents is presented. It is based on describing the strength contributions of lath and plate martensite, precipitates and retained austenite. Descriptions of the dislocation density in both martensitic structures are obtained in terms of carbon content and tempering conditions. It is shown that a peak in hardness usually observed for carbon contents ranging 0.6–1 wt% is a result of a compromise between the strength of martensite, and the increase in retained austenite. A parametric analysis is performed suggesting possible scenarios for hardness improvement.