In-situ TEM observation of nanobubbles evolution in helium-irradiated aluminium upon tensile stressing
文献类型：期刊论文
| 作者 | Chen, H; Cheng, YM; Lin, CH; Peng, JC; Liang, X; Gao, J; Liu, WQ; Huang, HF |
| 刊名 | JOURNAL OF NUCLEAR MATERIALS
 |
| 出版日期 | 2019 |
| 卷号 | 520期号:-页码:178—184 |
| 关键词 | BUBBLE FORMATION GRAIN-BOUNDARY MICROSTRUCTURE MIGRATION KINETICS GROWTH STEEL |
| ISSN号 | 0022-3115 |
| DOI | 10.1016/j.jnucmat.2019.04.022 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Polished high-purity aluminium was irradiated by 500 keV helium ions to a fluence of 3 x 10(16) ions/cm(2) at 450 degrees C. Then a micro-tensile sample was prepared by focused ion beam. The evolution of nanobubbles in irradiated aluminium upon stressing was investigated by employing in-situ tensile testing in a transmission electron microscope. In the case of helium-ions irradiation, dense bubbles with similar sizes are formed in a certain depth region from the irradiated surface. Upon tensile stressing, it was found that bubbles disappeared in the crack tip, and bubble coalescence occurred along the crack-propagation direction, which both contributed to the decrease of bubble number, whereas bubble sizes as well as bubble number showed almost no changes in the region far away the crack tip. This was caused by the non-uniform stresses in the stress fields, in which bubble migration occurred under the stress gradients while bubble evolution was hardly caused in a much low stressed region. Moreover, bubble sizes increased on the grain boundary and bubbles close to the grain boundary gradually disappeared upon stressing. This can be explained by the migration of helium bubbles toward the grain boundary under the stress gradients near the grain boundary. (C) 2019 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31677]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China; 2.Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China; 3.Shanghai Univ, Comp Ctr, Shanghai 200444, Peoples R China; 4.Shanghai Univ, Sch Mat Sci & Engn, Inst Mat, Shanghai 200444, Peoples R China; 5.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, H,Cheng, YM,Lin, CH,et al. In-situ TEM observation of nanobubbles evolution in helium-irradiated aluminium upon tensile stressing[J]. JOURNAL OF NUCLEAR MATERIALS,2019,520(-):178—184. |
| APA | Chen, H.,Cheng, YM.,Lin, CH.,Peng, JC.,Liang, X.,...&Huang, HF.(2019).In-situ TEM observation of nanobubbles evolution in helium-irradiated aluminium upon tensile stressing.JOURNAL OF NUCLEAR MATERIALS,520(-),178—184. |
| MLA | Chen, H,et al."In-situ TEM observation of nanobubbles evolution in helium-irradiated aluminium upon tensile stressing".JOURNAL OF NUCLEAR MATERIALS 520.-(2019):178—184. |
入库方式： OAI收割
来源：上海应用物理研究所
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