Understanding the factors controlling the hardness in martensitic steels
Understanding the factors controlling the hardness in martensitic steels
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.
Dislocation, Hardness, Martensitic steels, Modeling, Tempering
96-100
Galindo-Nava, E.I.
55a2bf00-0903-414e-8ab6-e26d143a9af3
Rivera-Díaz-Del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
27 September 2015
Galindo-Nava, E.I.
55a2bf00-0903-414e-8ab6-e26d143a9af3
Rivera-Díaz-Del-Castillo, P.E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Galindo-Nava, E.I. and Rivera-Díaz-Del-Castillo, P.E.J.
(2015)
Understanding the factors controlling the hardness in martensitic steels.
Scripta Materialia, 110, .
(doi:10.1016/j.scriptamat.2015.08.010).
Abstract
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.
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Accepted/In Press date: 10 August 2015
e-pub ahead of print date: 17 August 2015
Published date: 27 September 2015
Keywords:
Dislocation, Hardness, Martensitic steels, Modeling, Tempering
Identifiers
Local EPrints ID: 492427
URI: http://eprints.soton.ac.uk/id/eprint/492427
ISSN: 1359-6462
PURE UUID: f5f5b68e-05a3-4dda-b31a-12b2159a994c
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Date deposited: 26 Jul 2024 16:37
Last modified: 27 Jul 2024 02:08
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Contributors
Author:
E.I. Galindo-Nava
Author:
P.E.J. Rivera-Díaz-Del-Castillo
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