Issue |
Metall. Res. Technol.
Volume 120, Number 1, 2023
|
|
---|---|---|
Article Number | 117 | |
Number of page(s) | 16 | |
DOI | https://doi.org/10.1051/metal/2022094 | |
Published online | 22 February 2023 |
Regular Article
Analysis of the microstructural features of phase transformation during hardening processes of 3 martensitic stainless steels
1
LSPM − CNRS, Université Paris 13, 99, av. J.B. Clément, 93430 Villetaneuse, France
2
Laboratoire Quartz (EA 7393), ISAE-Supméca, 3 Rue Fernand Hainaut, 93400 Saint Ouen, France
* e-mail: brigitte.bacroix@univ-paris13.fr
Received:
11
July
2022
Accepted:
13
October
2022
The present paper investigates the microstructural features and associated hardening state of three different martensitic stainless steels (CX13, XD15 and MLX17 produced by Aubert&Duval), subjected to three different thermomechanical treatments, aimed at producing hard materials for tribological applications. It is thus shown that all treatments (cementation, HF quenching or Age Hardening) are efficient to produce hard surfaces. The bulk martensitic state is also studied. Although the three martensites look somewhat different, it is shown that the transformation always obeys the KS orientation relationship with some variant selection, which produces a significant amount of twin boundaries. These results are quite different from those found in low C steels. Based on a quantitative analysis of the EBSD microstructures, a quantification of the various relative hardening contributions (phase transformation, grain size, dislocation density, solid solution effect or precipitation) is then proposed.
Key words: Martensitic stainless steels / electron backscattering diffraction (EBSD) / hardness / phase transformation
© T. Santos et al., Published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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