| An experimental investigation of fatigue performance and crack initiation characteristics for an SLMed Ti-6Al-4V under different stress ratios up to very-high-cycle regime | |
Fu, Rui1; Zheng, Liang1; Ling, Chao1; Zhong, Zheng1; Hong YS(洪友士)2
| |
| Corresponding Author | Zhong, Zheng([email protected]) ; Hong, Youshi([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
 |
| 2022-11-01 | |
| Volume | 164Pages:14 |
| ISSN | 0142-1123 |
| Abstract | The fatigue behavior of SLMed Ti-6Al-4V has been intensively investigated in recent years. However, the effect of stress ratio has not been comprehensively studied, especially in VHCF regime. In this paper, the fatigue per-formance and crack initiation characteristics up to VHCF regime for an SLMed Ti-6Al-4V at various stress ratios (R =-1,-0.5, 0.1 and 0.5) were investigated and the effects of stress ratio were substantially discussed. The stress amplitude decreases with the increase of stress ratio with the order of: sigma(a) (R =-1) > sigma(a) (R =-0.5) > sigma(a) (R = 0.1) > sigma(a) (R = 0.5). Internal crack initiation is dominant in HCF and VHCF regimes under the four stress ratios, although surface crack initiation rarely occurs in HCF regime at R =-1 and 0.5. Whether the crack initiates from subsurface or from interior is affected by the applied maximum stress, and the crack initiation is in relation not only to defect size but also to defect location. The nanograins in RA are evidently formed in VHCF regime at R =-1,-0.5 and 0.1, but not at R = 0.5, which is well explained by the NCP model. |
| Keyword | Selective laser melting Ti-6Al-4V Very-high-cycle fatigue Crack initiation Stress intensity factor |
| DOI | 10.1016/j.ijfatigue.2022.107119 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000835270000001 |
| WOS Keyword | ADDITIVELY MANUFACTURED TI-6AL-4V ; MECHANICAL-PROPERTIES ; TENSILE PROPERTIES ; HEAT-TREATMENT ; N-GREATER-THAN-10(7) CYCLES ; BUILD ORIENTATION ; EARLY GROWTH ; PART I ; LASER ; MICROSTRUCTURE |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| Funding Project | National Natural Science Foundation of China[11932005] ; National Natural Science Foundation of China[11932020] ; Shenzhen Fundamental Research Program[JCYJ20180306171946292] |
| Funding Organization | National Natural Science Foundation of China ; Shenzhen Fundamental Research Program |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Zhong, Zheng ; Hong, Youshi |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89838 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Harbin Inst Technol Shenzhen, Sch Sci, Shenzhen, Peoples R China; 2.Chinese Acad Sci, Inst Mech, LNM, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Fu, Rui,Zheng, Liang,Ling, Chao,et al. An experimental investigation of fatigue performance and crack initiation characteristics for an SLMed Ti-6Al-4V under different stress ratios up to very-high-cycle regime[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,164:14.Rp_Au:Zhong, Zheng, Hong, Youshi |
| APA | Fu, Rui,Zheng, Liang,Ling, Chao,Zhong, Zheng,&洪友士.(2022).An experimental investigation of fatigue performance and crack initiation characteristics for an SLMed Ti-6Al-4V under different stress ratios up to very-high-cycle regime.INTERNATIONAL JOURNAL OF FATIGUE,164,14. |
| MLA | Fu, Rui,et al."An experimental investigation of fatigue performance and crack initiation characteristics for an SLMed Ti-6Al-4V under different stress ratios up to very-high-cycle regime".INTERNATIONAL JOURNAL OF FATIGUE 164(2022):14. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2022FA084_2022_An （26974KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment