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Tensile Plasticity of Miniature Specimens for a Low Alloy Steel Investigated by Digital Image Correlation Technique
Yang, Wen-Ke1,2; Wang, Li-Yi1,2; Song, Zhu-Man1; Luo, Xue-Mei1; Zhang, Guang-Ping1
Corresponding AuthorZhang, Guang-Ping(gpzhang@imr.ac.cn)
2021-04-16
Source PublicationSTEEL RESEARCH INTERNATIONAL
ISSN1611-3683
Pages12
AbstractMiniature specimens are widely being used to determine tensile properties of various size-limited new materials, especially quickly evaluate or monitor changes in mechanical properties of in-service reactor components to ensure their continuous operation with large safe margins. Although tensile properties of the miniature specimens are investigated extensively, the basic mechanism on such size effects, especially tensile plasticity, is not understood well. Here, tensile properties of A588 low alloy steel specimens with different gauge lengths and thicknesses are systematically investigated in situ using the digital image correlation technique. The findings reveal that the increase in the post-necking elongation with decreasing the specimen gauge length and the decrease with decreasing the specimen thickness are due to the scale-dependent strain-rate sensitivity, whereas the constant uniform elongation is attributed to the stable strain hardening exponent. An empirical formula on the relationship between the total elongation and the strain-rate sensitivity is proposed to describe the basic mechanism behind the specimen size-dependent elongation.
Keyworddigital image correlation elongation size effects tensile properties
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Fundamental Research Project of Shenyang National Laboratory for Materials Science
DOI10.1002/srin.202000685
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China (NSFC)[51771207] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000640713900001
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/162162
Collection中国科学院金属研究所
Corresponding AuthorZhang, Guang-Ping
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Yang, Wen-Ke,Wang, Li-Yi,Song, Zhu-Man,et al. Tensile Plasticity of Miniature Specimens for a Low Alloy Steel Investigated by Digital Image Correlation Technique[J]. STEEL RESEARCH INTERNATIONAL,2021:12.
APA Yang, Wen-Ke,Wang, Li-Yi,Song, Zhu-Man,Luo, Xue-Mei,&Zhang, Guang-Ping.(2021).Tensile Plasticity of Miniature Specimens for a Low Alloy Steel Investigated by Digital Image Correlation Technique.STEEL RESEARCH INTERNATIONAL,12.
MLA Yang, Wen-Ke,et al."Tensile Plasticity of Miniature Specimens for a Low Alloy Steel Investigated by Digital Image Correlation Technique".STEEL RESEARCH INTERNATIONAL (2021):12.
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