| Fatigue life prediction for LPBF-fabricated Ti-6Al-4V up to very-high-cycle regime based on continuum damage mechanics incorporating effect of defects | |
Ling, Chao; Jia, Yinfeng; Fu, Rui; Zheng, Liang; Zhong, Zheng; Hong YS(洪友士)
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| Corresponding Author | Zheng, Liang([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
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| 2024-04-01 | |
| Volume | 181Pages:13 |
| ISSN | 0142-1123 |
| Abstract | Defects and microstructural inhomogeneity have been recognized to have a significant impact on the fatigue performance of titanium alloys fabricated by laser powder bed fusion (LPBF). In this work, a modified Chaboche fatigue damage model incorporating the effect of defects was proposed to predict the fatigue life of LPBFfabricated Ti-6Al-4V under different stress ratios up to very-high-cycle fatigue regime. A nonlinear effect of mean stress observed in LPBF-fabricated Ti-6Al-4V was also considered in the model. The S-N data, critical defect sizes and locations obtained from our previous experimental work were utilized to calibrate and validate the proposed model. The scatter in fatigue life up to 109 cycles was predicted by the model for samples with subsurface and internal defects of size ranging from 30 mu m to 150 mu m under different stress ratios, and the prediction results agree with the experimental results very well. Based on the statistics of defect sizes and locations, the S-N curves for failure probabilities of 5 %, 50 % and 95 % were obtained for these stress ratios, and shown to be in reasonable agreement with the experimental data. |
| Keyword | Fatigue life prediction LPBF-fabricated Ti-6Al-4V Continuum damage mechanics Defect Very-high-cycle fatigue |
| DOI | 10.1016/j.ijfatigue.2023.108131 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001161603800001 |
| WOS Keyword | CRACK INITIATION ; SURFACE-ROUGHNESS ; PART II ; STRENGTH ; PERFORMANCE ; FAILURE ; STEELS ; MODEL ; OPTIMIZATION ; INCLUSIONS |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| Funding Project | Guangdong Basic and Applied Basic Research Foundation[2023A1515012012] ; Shenzhen Municipal Science and Technology Innovation Council[ZDSYS20210 616110000001] ; Shenzhen Municipal Science and Technology Innovation Council[GXWD20220817151830003] ; Shenzhen Municipal Science and Technology Innovation Council[KQTD2020082011304 5083] |
| Funding Organization | Guangdong Basic and Applied Basic Research Foundation ; Shenzhen Municipal Science and Technology Innovation Council |
| Classification | 一类 |
| Ranking | 3+ |
| Contributor | Zheng, Liang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94349 |
| Collection | 非线性力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Ling, Chao,Jia, Yinfeng,Fu, Rui,et al. Fatigue life prediction for LPBF-fabricated Ti-6Al-4V up to very-high-cycle regime based on continuum damage mechanics incorporating effect of defects[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,181:13.Rp_Au:Zheng, Liang |
| APA | Ling, Chao,Jia, Yinfeng,Fu, Rui,Zheng, Liang,Zhong, Zheng,&洪友士.(2024).Fatigue life prediction for LPBF-fabricated Ti-6Al-4V up to very-high-cycle regime based on continuum damage mechanics incorporating effect of defects.INTERNATIONAL JOURNAL OF FATIGUE,181,13. |
| MLA | Ling, Chao,et al."Fatigue life prediction for LPBF-fabricated Ti-6Al-4V up to very-high-cycle regime based on continuum damage mechanics incorporating effect of defects".INTERNATIONAL JOURNAL OF FATIGUE 181(2024):13. |
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