TY - JOUR
T1 - Microscale deformation of a tempered martensite ferritic steel
T2 - Modelling and experimental study of grain and sub-grain interactions
AU - Golden, Brian J.
AU - Li, Dong Feng
AU - Guo, Yina
AU - Tiernan, Peter
AU - Leen, Sean B.
AU - O'Dowd, Noel P.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - In this paper, a finite-element modelling framework is presented with explicit representation of polycrystalline microstructure for a tempered martensite ferritic steel. A miniature notched specimen was manufactured from P91 steel with a 20,000 h service history and tested at room temperature under three point bending. Deformation at the microscale is quantified by electron back scattered diffraction (EBSD) before and after mechanical loading. A representative volume element was developed, based on the initial EBSD scan, and a crystal plasticity model used to account for slip-based inelastic deformation in the material. The model showed excellent correlation with the experimental data when the relevant comparisons were made.
AB - In this paper, a finite-element modelling framework is presented with explicit representation of polycrystalline microstructure for a tempered martensite ferritic steel. A miniature notched specimen was manufactured from P91 steel with a 20,000 h service history and tested at room temperature under three point bending. Deformation at the microscale is quantified by electron back scattered diffraction (EBSD) before and after mechanical loading. A representative volume element was developed, based on the initial EBSD scan, and a crystal plasticity model used to account for slip-based inelastic deformation in the material. The model showed excellent correlation with the experimental data when the relevant comparisons were made.
KW - Mesoscale modelling
KW - Strain gradient crystal plasticity
KW - Tempered martensitic steels
UR - http://www.scopus.com/inward/record.url?scp=84944811084&partnerID=8YFLogxK
U2 - 10.1016/j.jmps.2015.09.015
DO - 10.1016/j.jmps.2015.09.015
M3 - Article
AN - SCOPUS:84944811084
SN - 0022-5096
VL - 86
SP - 42
EP - 52
JO - Journal of the Mechanics and Physics of Solids
JF - Journal of the Mechanics and Physics of Solids
ER -