Fatigue crack growth testing and measurement of fracture toughness with single edge notch tension (SENT) specimens of American Iron and Steel Institute (AISI) 301L-MT stainless steel were performed in the air, distilled water, and 3.5% and 9% NaCl solutions. Type 301L-MT steel exhibited the same resistance to corrosion for various environments in near-threshold region. The crack growth in the Paris region could be accelerated in a [Cl−] containing environment by decreasing the threshold of stress corrosion KISCC, but independent of [Cl−] concentration. When specimens were fatigue precracked in different conditions, it was found that the fracture toughness of SENT specimens in the aqueous environment decreased 23% to 30% compared with that in the air. The normalized formula was established to describe the behavior of fatigue crack propagation of type 301L-MT steel. Three parameters, ΔKthcf, β, and JIQ, were used to clarify the effect of H-embrittlement mechanism on fatigue crack propagation.
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1 August 2017
CORROSION SCIENCE SECTION|
April 12 2017
Study on Fatigue Crack Propagation Behavior in Corrosion Environment of a Cold-Rolled Austenitic Stainless Steel
Lidong Xu;
Lidong Xu
*School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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Hui Chen;
Hui Chen
‡
*School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
‡Corresponding author. E-mail: [email protected].
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Lin Shen;
Lin Shen
*School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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Xiaoli Che;
Xiaoli Che
*School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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Qiuying Wang;
Qiuying Wang
*School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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Zhenghong Fu
Zhenghong Fu
*School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
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CORROSION (2017) 73 (8): 961–969.
Article history
Received:
December 27 2016
Revision Received:
April 12 2017
Accepted:
April 12 2017
Citation
Lidong Xu, Hui Chen, Lin Shen, Xiaoli Che, Qiuying Wang, Zhenghong Fu; Study on Fatigue Crack Propagation Behavior in Corrosion Environment of a Cold-Rolled Austenitic Stainless Steel. CORROSION 1 August 2017; 73 (8): 961–969. doi: https://doi.org/10.5006/2374
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