Skip to Main content Skip to Navigation
Journal articles

The influence of silicon in tempered martensite: Understanding the microstructure-properties relationship in 0.5-0.6 wt.% C steels

Abstract : The strengthening contributions in medium-carbon tempered martensite are unveiled in this work. By using transmission electron microscopy and synchrotron radiation X-ray diffraction, the different microstructural features have been captured; these include precipitation, grain boundary, solid solution and dislocation forest strengthening. The evolution of these features was observed as a function of tempering temperature and silicon content. In trying to elucidate the nature of grain boundary strengthening, three approaches are presented, including a plasticity model based on irreversible thermodynamics, misorientation angle characterization by electron backscatter diffraction, and transmission electron microscopy analysis of failed regions. Based on the findings, it is concluded that silicon inhibits martensite recovery, and that at low tempering temperatures, lath boundaries also appear to contribute to strengthening.
Document type :
Journal articles
Complete list of metadata

https://hal.univ-lorraine.fr/hal-01513743
Contributor : Lem3 Ul <>
Submitted on : Thursday, December 3, 2020 - 6:28:32 PM
Last modification on : Monday, March 8, 2021 - 1:34:07 PM
Long-term archiving on: : Thursday, March 4, 2021 - 7:54:13 PM

File

HAL_GEY_ASCO_acta_2014.pdf
Files produced by the author(s)

Identifiers

Citation

B. Kim, Elodie Boucard, T. Sourmail, D. San Martin, Nathalie Gey, et al.. The influence of silicon in tempered martensite: Understanding the microstructure-properties relationship in 0.5-0.6 wt.% C steels. Acta Materialia, Elsevier, 2014, 68, pp.169-178. ⟨10.1016/j.actamat.2014.01.039⟩. ⟨hal-01513743⟩

Share

Metrics

Record views

418

Files downloads

91