| The influence of defect and temperature on the fatigue behaviours of Al-Si-Cu-Mg-Ni alloy | |
| Liu, Haiquan1,2; Pang, Jianchao1; Wang, Meng1,2; Li, Jianping3; Guo, Yongchun3; Li, Shouxin1; Zhang, Zhefeng1,2 | |
| Corresponding Author | Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn) |
| 2019-07-15 | |
| Source Publication | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
 |
| ISSN | 8756-758X |
| Pages | 11 |
| Abstract | High-cycle fatigue (HCF) properties of two Al-Si-Cu-Mg-Ni alloys with different defect sizes named as alloys A (smaller ones) and B (bigger ones) were investigated at 350 degrees C and 425 degrees C, respectively. The results indicate that fatigue strengths of both alloys decrease as the temperature increases. Fatigue cracks originated from pores and oxide films at both temperatures. They propagated preferentially through cracked matrix at 350 degrees C and debonded interface and grain boundary at 425 degrees C. Alloy A exhibits higher fatigue life and fatigue strength than alloy B at 350 degrees C due to its smaller pore sizes. However, it has slightly worse fatigue properties than alloy B at 425 degrees C because the fatigue crack initiation is controlled by oxide film at this temperature and is not affected by its size. This indicates that there is a transition of predominant initiation site from pores to oxide films when the temperature increases. The fatigue strength estimated through defect size is consistent with the experimental results at 350 degrees C, while unsuitable at 425 degrees C. |
| Keyword | Al-Si-Cu-Mg-Ni alloys casting defects fatigue damage high temperature high-cycle fatigue |
| Funding Organization | National Natural Science Foundation of China (NSFC) |
| DOI | 10.1111/ffe.13099 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China (NSFC)[51331007] ; National Natural Science Foundation of China (NSFC)[51871224] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000476321400001 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134799 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Pang, Jianchao; Zhang, Zhefeng |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Lab, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Shaanxi, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Haiquan,Pang, Jianchao,Wang, Meng,et al. The influence of defect and temperature on the fatigue behaviours of Al-Si-Cu-Mg-Ni alloy[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2019:11. |
| APA | Liu, Haiquan.,Pang, Jianchao.,Wang, Meng.,Li, Jianping.,Guo, Yongchun.,...&Zhang, Zhefeng.(2019).The influence of defect and temperature on the fatigue behaviours of Al-Si-Cu-Mg-Ni alloy.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,11. |
| MLA | Liu, Haiquan,et al."The influence of defect and temperature on the fatigue behaviours of Al-Si-Cu-Mg-Ni alloy".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2019):11. |
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