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Experimental and theoretical investigation of environmental media on very-high-cycle fatigue behavior for a structural steel
Qian GA(钱桂安); Zhou CE(周承恩); Hong YS(洪友士); Hong, YS (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Source PublicationActa Materialia
2011
Volume59Issue:4Pages:1321-1327
ISSN1359-6454
AbstractRotary bending fatigue tests were performed in laboratory air and 3.5% NaCl aqueous solution to investigate the influence of environmental media on fatigue properties of a structural steel in high-cycle and very-high-cycle fatigue regimes. The results show that the fatigue strength of the structural steel in 3.5% NaCl solution is remarkably degraded compared with the case tested in laboratory air. The fracture surfaces of specimens tested in different environments were examined to reveal the fatigue crack initiation characteristics. It shows that for specimens tested in 3.5% NaCl solution, cracks originate via multiple surface initiation modes and cracking is intergranular; in addition, widespread secondary cracks feature on the fracture surface. Based on fatigue tests and fractography observations, a numerical model of crack initiation is proposed to describe the transition of fatigue initiation site from subsurface to surface for specimens tested in air and 3.5% NaCl solution. The model reveals the influences of load, material strength, grain size, inclusion size and surface environmental media on the crack initiation site transition. It agrees well with the experimental observations. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordVery-high-cycle Fatigue Aqueous Environment Fatigue Strength Fatigue Crack Initiation Structural Steel High-strength Steels Chromium-bearing Steel S-n Characteristics Gigacycle Fatigue Hydrogen Transport Failure Mechanism Humidity Surface Regime
Subject AreaMaterials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.actamat.2010.10.064
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000287265100001
WOS KeywordHIGH-STRENGTH STEELS ; CHROMIUM-BEARING STEEL ; S-N CHARACTERISTICS ; GIGACYCLE FATIGUE ; HYDROGEN TRANSPORT ; FAILURE ; MECHANISM ; HUMIDITY ; SURFACE ; REGIME
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationThis work was funded by the National Natural Science Foundation of China (Nos. 10772178 and 10721202) and the Knowledge Innovation Program of the Chinese Academy of Sciences (No. KJCX2-YW-L07). The authors are thankful to Professor Tatsuo Sakai of Ritsumeikan University of Japan for his generously providing the rotary bending machine.
DepartmentLNM金属材料微结构与力学性能
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44946
Collection非线性力学国家重点实验室
Corresponding AuthorHong, YS (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Qian GA,Zhou CE,Hong YS,et al. Experimental and theoretical investigation of environmental media on very-high-cycle fatigue behavior for a structural steel[J]. Acta Materialia,2011,59(4):1321-1327.
APA 钱桂安,周承恩,洪友士,&Hong, YS .(2011).Experimental and theoretical investigation of environmental media on very-high-cycle fatigue behavior for a structural steel.Acta Materialia,59(4),1321-1327.
MLA 钱桂安,et al."Experimental and theoretical investigation of environmental media on very-high-cycle fatigue behavior for a structural steel".Acta Materialia 59.4(2011):1321-1327.
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