Peer-Reviewed Journal Details
Mandatory Fields
Golden, BJ,Li, DF,Guo, YN,Tiernan, P,Leen, SB,O'Dowd, NP
2016
January
Journal Of The Mechanics And Physics Of Solids
Microscale deformation of a tempered martensite ferritic steel: Modelling and experimental study of grain and sub-grain interactions
Published
WOS: 11 ()
Optional Fields
Mesoscale modelling Strain gradient crystal plasticity Tempered martensitic steels MICROSTRUCTURE EVOLUTION CRYSTAL PLASTICITY LATH MARTENSITE CREEP STRAIN DEGRADATION SUPERALLOY NUCLEATION ROTATIONS STRENGTH
86
42
52
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. (C) 2015 Elsevier Ltd. All rights reserved.
10.1016/j.jmps.2015.09.015
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