Back to Search Start Over

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

Authors :
Sreeramamurthy Ankem
Daniel E. Perea
Jia Liu
R. Prakash Kolli
Sarah Mburu
Samuel C. Schwarm
Source :
The Minerals, Metals & Materials Series ISBN: 9783319510965
Publication Year :
2017
Publisher :
Springer International Publishing, 2017.

Abstract

Cast duplex stainless steel piping in light water nuclear reactors experience 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 nanoindentation. A microstructure-based finite element method model is developed and utilized 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.

Details

ISBN :
978-3-319-51096-5
ISBNs :
9783319510965
Database :
OpenAIRE
Journal :
The Minerals, Metals & Materials Series ISBN: 9783319510965
Accession number :
edsair.doi...........559a7aceed5c0a72384ecd3b464e1391