| Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect | |
| Ben, D. D.1,2; Yang, H. J.2; Ji, H. B.1; Lian, D. L.1; Meng, L. X.1; Chen, J.3; Yi, J. L.3; Wang, L.3; De Hosson, J. ThM.4; Yang, R.1; Zhang, Z. F.1 | |
| Corresponding Author | Yang, H. J.(yanghj@szlab.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn) |
| 2023-10-03 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 885Pages:10 |
| Abstract | The present study aims at elucidating the impact of unavoidable defects in selective laser melting (SLM) additive manufactured alloys on fatigue performances. The novel idea is to reveal the relationship between the printing defect and fatigue crack growth, by intentionally embedding a 500 & mu;m spherical defect in an SLM-Ti6Al4V alloy exerted to low-cycle fatigue (LCF). The results show that the cyclic softening of the specimen was not affected by the embedded defect and surprisingly its fatigue life was nearly the same as the virgin specimens free of embedded defects at low strain amplitudes. The performance is attributed to the single crack initiation site and only small change in the stress intensity factor range (& UDelta;K). In contrast, when subjected to higher strain ampli-tudes during LCF, the embedded defect dominates the crack initiation and crack propagation occurs readily. It is shown that the experiments support a model description based on the competitive failure mechanisms between the surface defects and internal defects. |
| Keyword | Defects Low-cycle fatigue Crack growth Selective laser melting Ti6Al4V alloy |
| Funding Organization | National Natural Science Foundation of China ; COMAC Shanghai Aircraft Manufacturing Co., Ltd ; Liao Ning Revitalization Talents Program |
| DOI | 10.1016/j.msea.2023.145612 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51975552] ; National Natural Science Foundation of China[52130002] ; COMAC Shanghai Aircraft Manufacturing Co., Ltd[COMAC-SFGS-2018-2663] ; Liao Ning Revitalization Talents Program[XLYC1808027] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:001070037700001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/179288 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yang, H. J.; Zhang, Z. F. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Suzhou Lab, Suzhou 215028, Peoples R China 3.COMAC Shanghai Aircraft Mfg Co Ltd, Shanghai 201324, Peoples R China 4.Univ Groningen, Zernike Inst Adv Mat, Dept Appl Phys, NL-9747 AG Groningen, Netherlands |
| Recommended Citation GB/T 7714 | Ben, D. D.,Yang, H. J.,Ji, H. B.,et al. Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,885:10. |
| APA | Ben, D. D..,Yang, H. J..,Ji, H. B..,Lian, D. L..,Meng, L. X..,...&Zhang, Z. F..(2023).Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,885,10. |
| MLA | Ben, D. D.,et al."Fatigue crack growth behavior in additive manufactured Ti6Al4V alloy with intentionally embedded spherical defect".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 885(2023):10. |
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