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Title: Mechanical and Microstructural Effects of Thermal Aging on Cast Duplex Stainless Steels by Experiment and Finite Element Method

Abstract

Cast duplex stainless steel piping in light water nuclear reactors expe- rience thermal aging embrittlement during operational service. Interest in extending the operational life to 80 years requires an increased understanding of the microstructural evolution and corresponding changes in mechanical behavior. We analyze the evolution of the microstructure during thermal aging of cast CF-3 and CF-8 stainless steels using electron microscopy and atom probe tomography. The evolution of the mechanical properties is measured concurrently by mechanical methods such as tensile tests, Charpy V-notch tests, and instrumented nanoinden- tation. A microstructure-based finite element method model is developed and uti- lized in conjunction with the characterization results in order to correlate the local stress-strain effects in the microstructure with the bulk measurements. This work is supported by the DOE Nuclear Energy University Programs (NEUP), contract number DE-NE0000724.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1373868
Report Number(s):
PNNL-SA-124533
49647; KP1704020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Mechanical and Creep Behavior of Advanced Materials: A SMD Symposium Honoring Professor K. Linga Murty. The Minerals, Metals & Materials Series, 253-262, San Diego, CA (United States), 26 Feb-2 Mar 2017
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Environmental Molecular Sciences Laboratory

Citation Formats

Schwarm, Samuel C., Mburu, Sarah N., Kolli, Ratna P., Perea, Daniel E., Liu, Jia, and Ankem, Sreeramamurthy. Mechanical and Microstructural Effects of Thermal Aging on Cast Duplex Stainless Steels by Experiment and Finite Element Method. United States: N. p., 2017. Web. doi:10.1007/978-3-319-51097-2_20.
Schwarm, Samuel C., Mburu, Sarah N., Kolli, Ratna P., Perea, Daniel E., Liu, Jia, & Ankem, Sreeramamurthy. Mechanical and Microstructural Effects of Thermal Aging on Cast Duplex Stainless Steels by Experiment and Finite Element Method. United States. doi:10.1007/978-3-319-51097-2_20.
Schwarm, Samuel C., Mburu, Sarah N., Kolli, Ratna P., Perea, Daniel E., Liu, Jia, and Ankem, Sreeramamurthy. Sun . "Mechanical and Microstructural Effects of Thermal Aging on Cast Duplex Stainless Steels by Experiment and Finite Element Method". United States. doi:10.1007/978-3-319-51097-2_20.
@article{osti_1373868,
title = {Mechanical and Microstructural Effects of Thermal Aging on Cast Duplex Stainless Steels by Experiment and Finite Element Method},
author = {Schwarm, Samuel C. and Mburu, Sarah N. and Kolli, Ratna P. and Perea, Daniel E. and Liu, Jia and Ankem, Sreeramamurthy},
abstractNote = {Cast duplex stainless steel piping in light water nuclear reactors expe- rience thermal aging embrittlement during operational service. Interest in extending the operational life to 80 years requires an increased understanding of the microstructural evolution and corresponding changes in mechanical behavior. We analyze the evolution of the microstructure during thermal aging of cast CF-3 and CF-8 stainless steels using electron microscopy and atom probe tomography. The evolution of the mechanical properties is measured concurrently by mechanical methods such as tensile tests, Charpy V-notch tests, and instrumented nanoinden- tation. A microstructure-based finite element method model is developed and uti- lized in conjunction with the characterization results in order to correlate the local stress-strain effects in the microstructure with the bulk measurements. This work is supported by the DOE Nuclear Energy University Programs (NEUP), contract number DE-NE0000724.},
doi = {10.1007/978-3-319-51097-2_20},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {2}
}

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Works referenced in this record:

Characterization of phase properties and deformation in ferritic-austenitic duplex stainless steels by nanoindentation and finite element method
journal, January 2017

  • Schwarm, Samuel C.; Kolli, R. Prakash; Aydogan, Eda
  • Materials Science and Engineering: A, Vol. 680
  • DOI: 10.1016/j.msea.2016.10.116

Recent developments in stainless steels
journal, May 2009

  • Lo, K. H.; Shek, C. H.; Lai, J. K. L.
  • Materials Science and Engineering: R: Reports, Vol. 65, Issue 4-6
  • DOI: 10.1016/j.mser.2009.03.001