Tensile Plasticity of Miniature Specimens for a Low Alloy Steel Investigated by Digital Image Correlation Technique

doi:10.1002/srin.202000685

CORC > 金属研究所 > 中国科学院金属研究所

	Tensile Plasticity of Miniature Specimens for a Low Alloy Steel Investigated by Digital Image Correlation Technique
	Yang, Wen-Ke 1,2; Wang, Li-Yi 1,2; Song, Zhu-Man 1; Luo, Xue-Mei 1; Zhang, Guang-Ping 1
刊名	STEEL RESEARCH INTERNATIONAL
	2021-04-16
页码	12
关键词	digital image correlation elongation size effects tensile properties
ISSN号	1611-3683
DOI	10.1002/srin.202000685
通讯作者	Zhang, Guang-Ping(gpzhang@imr.ac.cn)
英文摘要	Miniature 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.
资助项目	National Natural Science Foundation of China (NSFC)[51771207] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000640713900001
资助机构	National Natural Science Foundation of China (NSFC) ; Fundamental Research Project of Shenyang National Laboratory for Materials Science
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/162161]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Guang-Ping
作者单位	1.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
推荐引用方式 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.