Approximate residual stress and plastic strain profiles for laser-peened alloy 600 surfaces

This paper presents approximate in-depth residual stress and plastic strain profiles for laser-peened alloy 600 surface via FE analysis. In approximations, effects of the initial welding residual stress and the number of shots are quantified. Based on FE analysis results, residual stress profiles ar...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear engineering and technology 2023, 55(4), , pp.1250-1264
Main Authors: Park, Eui-Kyun, Lee, Hyun-Jae, Kim, Ju-Hee, Kim, Yun-Jae
Format: Article
Language:English
Subjects:
Alloy 600
Approximate solutions
FE laser shock peening simulation
Residual stress and plastic strain
원자력공학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents approximate in-depth residual stress and plastic strain profiles for laser-peened alloy 600 surface via FE analysis. In approximations, effects of the initial welding residual stress and the number of shots are quantified. Based on FE analysis results, residual stress profiles are quantified by two variables; the maximum difference in stress before and after LSP, and the depth up to which the compressive residual stress exists. Plastic strain profiles are quantified by one variable, the maximum equivalent plastic strain at the surface. The proposed profiles are validated by comparing with published LSP experimental results for welded plates. Effects of the initial welding residual stress and the number of shots on these variables are discussed. The proposed profile can be directly applied to predict the mitigation effect of LSP on PWSCC and to efficiently perform structural integrity assessment of laser peened nuclear components.
ISSN:1738-5733
2234-358X
DOI:10.1016/j.net.2022.12.010