| Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens | |
| Yang, Wen-Ke1,2; Song, Zhu-Man1; Luo, Xue-Mei1; Zhang, Guang-Ping1 | |
| Corresponding Author | Zhang, Guang-Ping(gpzhang@imr.ac.cn) |
| 2022-09-12 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Pages | 11 |
| Abstract | 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. |
| Keyword | Size effect Small specimen Tensile property Fatigue life |
| Funding Organization | National Natural Science Foundation of China (NSFC) ; Fundamental Research Project of Shenyang National Laboratory for Materials Science |
| DOI | 10.1007/s40195-022-01456-w |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[52171128] ; Fundamental Research Project of Shenyang National Laboratory for Materials Science[L2019R18] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000852600100001 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/175080 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Guang-Ping |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 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,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. |
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