Grain size effect on tensile deformation behaviors of pure aluminum
文献类型：期刊论文
| 作者 | Wang, B. B.1,3; Xie, G. M.2; Wu, L. H.3; Xue, P.3; Ni, D. R.3; Xiao, B. L.3; Liu, Y. D.1; Ma, Z. Y.3 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2021-07-13 |
| 卷号 | 820页码:9 |
| 关键词 | Grain size effect Tensile properties Hall-petch relationship Strengthening mechanism |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2021.141504 |
| 通讯作者 | Xue, P.(pxue@imr.ac.cn) |
| 英文摘要 | Grain refinement is a very effective method to improve the mechanical properties of materials and attracts widespread interests among researchers. However, the grain size effect on the mechanical properties is still unclear due to the undesirable microstructure in ultrafine grained (UFG) materials. In the present work, series of ideal materials with average grain sizes range from 0.7 mu m to 30.0 mu m containing high fraction of high angle grain boundaries (HAGBs), equiaxed grains and low density of dislocations were produced by friction stir processing (FSP). It was found that the Hall-Petch relationships could be classified into three stages as the grain size reduced from coarse grain to UFG regimes, which were decided by the strengthening mechanisms during tensile deformation. The strengthening effect of HAGBs (71 MPa center dot mu m1/2) was almost three times of low angle grain boundaries (25 MPa center dot mu m1/2), resulting in the positive deviation of Hall-Petch slope in fine grain regime by the increased specific surface area of HAGBs. The further positive deviation of the Hall-Petch slope in UFG regime was affected by the occurrence of an extra dislocation source limited strengthening mechanism, which was up to 29 MPa and reached to about 20% of the yield strength. The increased recovery rate of dislocations at HAGBs contributed to the decrease of mobile dislocation density, leading to the losing of work hardening in UFG regime during tensile deformation. |
| 资助项目 | National Natural Science Foundation of China[52071317] ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University[2020RALKFKT009] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017236] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000668737900002 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| 源URL | [http://ir.imr.ac.cn/handle/321006/159953]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xue, P. |
| 作者单位 | 1.Northeastern Univ, Sch Mat Sci & Engn, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, B. B.,Xie, G. M.,Wu, L. H.,et al. Grain size effect on tensile deformation behaviors of pure aluminum[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,820:9. |
| APA | Wang, B. B..,Xie, G. M..,Wu, L. H..,Xue, P..,Ni, D. R..,...&Ma, Z. Y..(2021).Grain size effect on tensile deformation behaviors of pure aluminum.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,820,9. |
| MLA | Wang, B. B.,et al."Grain size effect on tensile deformation behaviors of pure aluminum".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 820(2021):9. |
入库方式： OAI收割
来源：金属研究所
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