Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR

The complicated driving force at the stress corrosion cracking (SCC) tip of the safe-end dissimilar metal-welded joints (DMWJs) in the pressurized water reactor (PWR) is mainly caused by the heterogeneous material mechanical properties. In this research, to accurately evaluate the crack driving forc...

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Main Authors: Yuman Sun, He Xue, Kuan Zhao, Yubiao Zhang, Youjun Zhao, Weiming Yan, Rehmat Bashir
Format: Article
Language:English
Published: Wiley 2022-01-01
Series:Science and Technology of Nuclear Installations
Online Access:http://dx.doi.org/10.1155/2022/6605101
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author Yuman Sun
He Xue
Kuan Zhao
Yubiao Zhang
Youjun Zhao
Weiming Yan
Rehmat Bashir
author_facet Yuman Sun
He Xue
Kuan Zhao
Yubiao Zhang
Youjun Zhao
Weiming Yan
Rehmat Bashir
author_sort Yuman Sun
collection DOAJ
description The complicated driving force at the stress corrosion cracking (SCC) tip of the safe-end dissimilar metal-welded joints (DMWJs) in the pressurized water reactor (PWR) is mainly caused by the heterogeneous material mechanical properties. In this research, to accurately evaluate the crack driving force at the SCC in DMWJs, the stress-strain condition, stress triaxiality, and J-integral of the crack tip at different positions are analyzed based on the heterogeneous material properties model. The results indicate that the larger driving force will be provided for the I-type crack when the crack is in the SA508 zone and the interface between the 316L region and base metal. In addition, the heterogeneous material properties inhibit the J-integral of the crack in the 316L region, which has a promoting effect when the crack is in the SA508 zone and weld metal. It provides a new idea for analyzing driving force at the crack tip and safety evaluation of DMWJs in PWRs.
format Article
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institution Kabale University
issn 1687-6083
language English
publishDate 2022-01-01
publisher Wiley
record_format Article
series Science and Technology of Nuclear Installations
spelling doaj-art-19d7391a6a8b43fda98cac7ac005489c2025-02-03T01:04:31ZengWileyScience and Technology of Nuclear Installations1687-60832022-01-01202210.1155/2022/6605101Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWRYuman Sun0He Xue1Kuan Zhao2Yubiao Zhang3Youjun Zhao4Weiming Yan5Rehmat Bashir6School of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringSchool of Mechanical EngineeringThe complicated driving force at the stress corrosion cracking (SCC) tip of the safe-end dissimilar metal-welded joints (DMWJs) in the pressurized water reactor (PWR) is mainly caused by the heterogeneous material mechanical properties. In this research, to accurately evaluate the crack driving force at the SCC in DMWJs, the stress-strain condition, stress triaxiality, and J-integral of the crack tip at different positions are analyzed based on the heterogeneous material properties model. The results indicate that the larger driving force will be provided for the I-type crack when the crack is in the SA508 zone and the interface between the 316L region and base metal. In addition, the heterogeneous material properties inhibit the J-integral of the crack in the 316L region, which has a promoting effect when the crack is in the SA508 zone and weld metal. It provides a new idea for analyzing driving force at the crack tip and safety evaluation of DMWJs in PWRs.http://dx.doi.org/10.1155/2022/6605101
spellingShingle Yuman Sun
He Xue
Kuan Zhao
Yubiao Zhang
Youjun Zhao
Weiming Yan
Rehmat Bashir
Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR
Science and Technology of Nuclear Installations
title Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR
title_full Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR
title_fullStr Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR
title_full_unstemmed Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR
title_short Cracking Driving Force at the Tip of SCC under Heterogeneous Material Mechanics Model of Safe-End Dissimilar Metal-Welded Joints in PWR
title_sort cracking driving force at the tip of scc under heterogeneous material mechanics model of safe end dissimilar metal welded joints in pwr
url http://dx.doi.org/10.1155/2022/6605101
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