Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: I. Theory and implementation
Abstract
This paper presents a physically-based microstructural model for creep rupture at 600 degrees °C for Grade 91 steel. The model includes constitutive equations that reflect various observed phenomena in Grade 91, and it is incorporated into a mesoscale finite element model with explicit geometry for the prior austenite grains and grain boundaries. Creep within the grains is represented using crystal plasticity for dislocation motion and recovery along with linear viscous diffusional creep for point defect diffusion. The grain boundary models include physics-based models for cavity growth and nucleation that accurately capture tertiary creep and creep rupture. Simulations of creep at 100 MPa are performed, and the contribution of each mechanism is analyzed. The overarching goal is to gain a mechanistic understanding of the material to improve the prediction of creep rupture for long service lives in elevated temperature operating conditions. The creep response of the material at different stress levels, stress states, and temperatures is studied in Part 2 of this paper in order to determine the implications of the simulations on high temperature design practice. Furthermore, the second part explores the effect of triaxial stress states on the creep response and finds a transition from notch-strengthening behavior at highmore »
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering
- Argonne National Lab. (ANL), Argonne, IL (United States). Applied Materials Division
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE), Reactor Fleet and Advanced Reactor Development. Nuclear Reactor Technologies; USDOE Office of Science (SC)
- OSTI Identifier:
- 1574947
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Modelling and Simulation in Materials Science and Engineering
- Additional Journal Information:
- Journal Volume: 27; Journal Issue: 7; Journal ID: ISSN 0965-0393
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; creep; crystal plasticity; grain boundary sliding and cavity growth; interface elements; mesoscale modeling; tempered martensitic steels
Citation Formats
Nassif, Omar, Truster, Timothy J., Ma, Ran, Cochran, Kristine B., Parks, David M., Messner, M. C., and Sham, T-L. Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: I. Theory and implementation. United States: N. p., 2019.
Web. doi:10.1088/1361-651X/ab359c.
Nassif, Omar, Truster, Timothy J., Ma, Ran, Cochran, Kristine B., Parks, David M., Messner, M. C., & Sham, T-L. Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: I. Theory and implementation. United States. doi:10.1088/1361-651X/ab359c.
Nassif, Omar, Truster, Timothy J., Ma, Ran, Cochran, Kristine B., Parks, David M., Messner, M. C., and Sham, T-L. Tue .
"Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: I. Theory and implementation". United States. doi:10.1088/1361-651X/ab359c. https://www.osti.gov/servlets/purl/1574947.
@article{osti_1574947,
title = {Combined crystal plasticity and grain boundary modeling of creep in ferritic-martensitic steels: I. Theory and implementation},
author = {Nassif, Omar and Truster, Timothy J. and Ma, Ran and Cochran, Kristine B. and Parks, David M. and Messner, M. C. and Sham, T-L},
abstractNote = {This paper presents a physically-based microstructural model for creep rupture at 600 degrees °C for Grade 91 steel. The model includes constitutive equations that reflect various observed phenomena in Grade 91, and it is incorporated into a mesoscale finite element model with explicit geometry for the prior austenite grains and grain boundaries. Creep within the grains is represented using crystal plasticity for dislocation motion and recovery along with linear viscous diffusional creep for point defect diffusion. The grain boundary models include physics-based models for cavity growth and nucleation that accurately capture tertiary creep and creep rupture. Simulations of creep at 100 MPa are performed, and the contribution of each mechanism is analyzed. The overarching goal is to gain a mechanistic understanding of the material to improve the prediction of creep rupture for long service lives in elevated temperature operating conditions. The creep response of the material at different stress levels, stress states, and temperatures is studied in Part 2 of this paper in order to determine the implications of the simulations on high temperature design practice. Furthermore, the second part explores the effect of triaxial stress states on the creep response and finds a transition from notch-strengthening behavior at high stress to notch-weakening behavior at lower stresses.},
doi = {10.1088/1361-651X/ab359c},
journal = {Modelling and Simulation in Materials Science and Engineering},
number = 7,
volume = 27,
place = {United States},
year = {2019},
month = {8}
}
Web of Science
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Evolution of dislocation density, size of subgrains and MX-type precipitates in a P91 steel during creep and during thermal ageing at 600C for more than 100,000h
journal, June 2010
- Panait, Clara Gabriela; Zielińska-Lipiec, Anna; Koziel, Tomasz
- Materials Science and Engineering: A, Vol. 527, Issue 16-17
Dislocation-density-based constitutive modelling of tensile flow and work-hardening behaviour of P92 steel
journal, August 2014
- Christopher, J.; Choudhary, B. K.
- Philosophical Magazine, Vol. 94, Issue 26
Martensite laths in creep resistant martensitic 9–12% Cr steels — Calculation and measurement of misorientations
journal, October 2007
- Sonderegger, B.; Mitsche, S.; Cerjak, H.
- Materials Characterization, Vol. 58, Issue 10
On interface element insertion into three-dimensional meshes
journal, March 2016
- Truster, Timothy J.
- Engineering Fracture Mechanics, Vol. 153
A Comprehensive Creep Model for Advanced 9-10% Cr Ferritic Steels
journal, January 2013
- Oruganti, Ramkumar; Karadge, Mallikarjun; Swaminathan, Srinivasan
- Procedia Engineering, Vol. 55
Comparative analysis of extrinsic and intrinsic cohesive models of dynamic fracture
journal, July 2003
- Kubair, Dhirendra V.; Geubelle, Philippe H.
- International Journal of Solids and Structures, Vol. 40, Issue 15
Quantification of the Laves phase in advanced 9–12% Cr steels using a standard SEM
journal, December 2003
- Dimmler, G.; Weinert, P.; Kozeschnik, E.
- Materials Characterization, Vol. 51, Issue 5