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Title: Effect of Laser Shock Peening on the Microstructures and Properties of Oxide-Dispersion-Strengthened Austenitic Steels

Abstract

Oxide-dispersion-strengthened (ODS) austenitic steels are promising materials for next-generation fossil and nuclear energy systems. In this study, laser shock peening (LSP) has been applied to ODS 304 austenitic steels, during which a high density of dislocations, stacking faults, and deformation twins are generated in the near surface of the material due to the interaction of laser-driven shock waves and the austenitic steel matrix. The dispersion particles impede the propagation of dislocations. The compressive residual stress generated by LSP increases with successive LSP scans and decreases along the depth, with a maximum value of -369MPa. The hardness on the surface can be improved by 12% using LSP. In situ transmission electron microscopy (TEM) irradiation studies reveal that dislocations and incoherent twin boundaries induced by LSP serve as effective sinks to annihilate irradiation defects. Furthermore, these findings suggest that LSP can improve the mechanical properties and irradiation resistance of ODS austenitic steels in nuclear reactor environments.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2]; ORCiD logo [1]
  1. Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1483414
Alternate Identifier(s):
OSTI ID: 1407842
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Engineering Materials
Additional Journal Information:
Journal Volume: 20; Journal Issue: 3; Journal ID: ISSN 1438-1656
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; irradiation resistance; laser shock peening; microstructure; ODS austenitic steels; residual stress

Citation Formats

Yan, Xueliang, Wang, Fei, Deng, Leimin, Zhang, Chenfei, Lu, Yongfeng, Nastasi, Michael, Kirk, Marquis A., Li, Meimei, and Cui, Bai. Effect of Laser Shock Peening on the Microstructures and Properties of Oxide-Dispersion-Strengthened Austenitic Steels. United States: N. p., 2017. Web. doi:10.1002/adem.201700641.
Yan, Xueliang, Wang, Fei, Deng, Leimin, Zhang, Chenfei, Lu, Yongfeng, Nastasi, Michael, Kirk, Marquis A., Li, Meimei, & Cui, Bai. Effect of Laser Shock Peening on the Microstructures and Properties of Oxide-Dispersion-Strengthened Austenitic Steels. United States. doi:10.1002/adem.201700641.
Yan, Xueliang, Wang, Fei, Deng, Leimin, Zhang, Chenfei, Lu, Yongfeng, Nastasi, Michael, Kirk, Marquis A., Li, Meimei, and Cui, Bai. Tue . "Effect of Laser Shock Peening on the Microstructures and Properties of Oxide-Dispersion-Strengthened Austenitic Steels". United States. doi:10.1002/adem.201700641. https://www.osti.gov/servlets/purl/1483414.
@article{osti_1483414,
title = {Effect of Laser Shock Peening on the Microstructures and Properties of Oxide-Dispersion-Strengthened Austenitic Steels},
author = {Yan, Xueliang and Wang, Fei and Deng, Leimin and Zhang, Chenfei and Lu, Yongfeng and Nastasi, Michael and Kirk, Marquis A. and Li, Meimei and Cui, Bai},
abstractNote = {Oxide-dispersion-strengthened (ODS) austenitic steels are promising materials for next-generation fossil and nuclear energy systems. In this study, laser shock peening (LSP) has been applied to ODS 304 austenitic steels, during which a high density of dislocations, stacking faults, and deformation twins are generated in the near surface of the material due to the interaction of laser-driven shock waves and the austenitic steel matrix. The dispersion particles impede the propagation of dislocations. The compressive residual stress generated by LSP increases with successive LSP scans and decreases along the depth, with a maximum value of -369MPa. The hardness on the surface can be improved by 12% using LSP. In situ transmission electron microscopy (TEM) irradiation studies reveal that dislocations and incoherent twin boundaries induced by LSP serve as effective sinks to annihilate irradiation defects. Furthermore, these findings suggest that LSP can improve the mechanical properties and irradiation resistance of ODS austenitic steels in nuclear reactor environments.},
doi = {10.1002/adem.201700641},
journal = {Advanced Engineering Materials},
number = 3,
volume = 20,
place = {United States},
year = {2017},
month = {11}
}

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Works referenced in this record:

Recent Developments in Irradiation-Resistant Steels
journal, August 2008