| Effect of aging state on corrosion fatigue properties of 7075 aluminum alloy | |
| Gong, B. S.1,2; Zhang, Z. J.1,2; Hou, J. P.1; Duan, Q. Q.1; Wang, X. G.1; Zhang, Z. F.1,2 | |
| Corresponding Author | Zhang, Z. J.(zjzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2022-08-01 | |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
 |
| ISSN | 0142-1123 |
| Volume | 161Pages:8 |
| Abstract | The corrosion fatigue performance of Al alloy components is crucial for their engineering applications. This study focuses on the corrosion fatigue properties of 7075 Al alloys in three different aging states, i.e. over-aging (OA), peak-aging (PA) and under-aging (UA) states. The results show that the fatigue damage mechanism of the Al alloy is greatly affected by the stress level. In the high-stress region where the cyclic number is short, the fatigue damage is mainly caused by dislocations accumulation and stress concentration on the grain boundary. Compared with the UA state, the wave slip dislocations at the OA state are easy to accumulate and annihilate at the second phase boundaries, which reduces the fatigue damage degree at the grain boundaries. However, in the low-stress range where the cyclic number is large, the corrosion fatigue life of the Al alloy is mainly controlled by pitting-induced crack initiation. For the OA state, the spacing and size of the precipitated phase are large, so it is easy to trigger corrosive pitting, which reduces the corrosion fatigue performance of the alloy. |
| Keyword | 7075 Al alloy Aging state Corrosion fatigue Grain boundaries Pitting |
| Funding Organization | Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; KC Wong Education Foundation |
| DOI | 10.1016/j.ijfatigue.2022.106916 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Youth Innovation Promotion Association CAS[2021192] ; National Natural Science Foundation of China (NSFC)[51871223] ; National Natural Science Foundation of China (NSFC)[51790482] ; National Natural Science Foundation of China (NSFC)[52130002] ; Chinese Academy of Sciences[174321KYSB20210002] ; KC Wong Education Foundation[GJTD-2020-09] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000829856700002 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174666 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Z. J.; Zhang, Z. F. |
| Affiliation | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Gong, B. S.,Zhang, Z. J.,Hou, J. P.,et al. Effect of aging state on corrosion fatigue properties of 7075 aluminum alloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,161:8. |
| APA | Gong, B. S.,Zhang, Z. J.,Hou, J. P.,Duan, Q. Q.,Wang, X. G.,&Zhang, Z. F..(2022).Effect of aging state on corrosion fatigue properties of 7075 aluminum alloy.INTERNATIONAL JOURNAL OF FATIGUE,161,8. |
| MLA | Gong, B. S.,et al."Effect of aging state on corrosion fatigue properties of 7075 aluminum alloy".INTERNATIONAL JOURNAL OF FATIGUE 161(2022):8. |
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