Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens

doi:10.1007/s40195-022-01456-w

CORC > 金属研究所 > 中国科学院金属研究所

	Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens
	Yang, Wen-Ke 1,2; Song, Zhu-Man 2; Luo, Xue-Mei 2; Zhang, Guang-Ping 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2022-09-12
页码	11
关键词	Size effect Small specimen Tensile property Fatigue life
ISSN号	1006-7191
DOI	10.1007/s40195-022-01456-w
通讯作者	Zhang, Guang-Ping(gpzhang@imr.ac.cn)
英文摘要	Small specimens are increasingly being used in getting mechanical properties directly when there are limited materials to facilitate standard specimens, which play a great role in the rapid measurement of mechanical properties and residual life assessment of in-service reactor components. Although tensile and fatigue properties of the small specimens are investigated extensively, theoretical models for describing the mechanical properties of small specimens need to be established. Here, we conduct a systematic investigation of tensile and fatigue properties of pure Cu specimens with thicknesses ranging from 3 to 0.2 mm. The results show that the decrease in uniform elongation of the 0.2 mm-thick specimens is mainly due to the effects of grain boundary and free surface on the strain hardening rate. A modified theoretical model correlated with the ratio of the surface grain layer thickness to the grain size is proposed to predict variation in yield strength of the small specimens more accurately. Furthermore, the mechanism for the difference in fatigue life between the 0.2 mm-thick specimen and other thicker specimens is elucidated. The Basquin equation-based model is presented as a potential way to evaluate the fatigue life of metals using small specimens.
资助项目	National Natural Science Foundation of China (NSFC)[52171128] ; 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	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000852600100001
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/321006/175079]
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.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yang, Wen-Ke,Song, Zhu-Man,Luo, Xue-Mei,et al. Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:11.
APA	Yang, Wen-Ke,Song, Zhu-Man,Luo, Xue-Mei,&Zhang, Guang-Ping.(2022).Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens.ACTA METALLURGICA SINICA-ENGLISH LETTERS,11.
MLA	Yang, Wen-Ke,et al."Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):11.