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Effects of environment on the overload behavior of fatigue
Guan, H; Li, J; Wei, XJ; Han, EH; Ke, W
Corresponding AuthorGuan, H()
2003-06-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume39Issue:6Pages:613-616
AbstractThe effects of 3.5% NaCl aqueous solution on the overload retardation behaviour of AISI 321 stainless steel fatigued under constant DeltaK was investigated. The results show that, compared with the air, the environment reduces the overload retardation effect significantly, although the overload behaviors in the air and environment are similar. The reducing level is approximately 40%-70% in terms of loss cycle number, and 30-40% in terms of overload affecting zone size. The comparison of the above two parameters shows that the former is not a proper parameter to describe the overload effect because of not distinguishing between the strengthening and reducing effects of environment on the crack closure. The later is a better parameter to describe the overload effect because it can distinguish the environmental effect on the crack closure from the comprehensively environmental effects on both crack closure and crack tip. SEM analysis of the fracture surface shows that the overload plastic strain suffered more erosion in environment than in air. It is suggested that the reduction of the plasticity-induced crack closure caused by environmental corrosion-erosion is responsible for the reduction of the overload retardation effect.
Keywordenvironment stainless steel fatigue crack propagation overload
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000183958400012
PublisherSCIENCE CHINA PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/117915
Collection中国科学院金属研究所
Corresponding AuthorGuan, H
Affiliation1.Chinese Acad Sci, Met Res Inst, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
2.Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
Recommended Citation
GB/T 7714
Guan, H,Li, J,Wei, XJ,et al. Effects of environment on the overload behavior of fatigue[J]. ACTA METALLURGICA SINICA,2003,39(6):613-616.
APA Guan, H,Li, J,Wei, XJ,Han, EH,&Ke, W.(2003).Effects of environment on the overload behavior of fatigue.ACTA METALLURGICA SINICA,39(6),613-616.
MLA Guan, H,et al."Effects of environment on the overload behavior of fatigue".ACTA METALLURGICA SINICA 39.6(2003):613-616.
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