| Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V | |
Du LM(杜雷鸣)1,2; Qian GA(钱桂安)1 ; Zheng L2; Hong YS(洪友士)1
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| Corresponding Author | Zheng, Liang([email protected]) ; Hong, Youshi([email protected]) |
| Source Publication | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
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| 2020-10-04 | |
| Pages | 17 |
| ISSN | 8756-758X |
| Abstract | Orthogonal experiment design together with the analysis of variance was used to examine the processing parameters (laser power, scan speed, layer thickness and hatch spacing) of selective laser melting (SLM) for superior properties of SLM parts, in which nine groups of specimens of Ti-6Al-4V were fabricated. The results clarify that the influence sequence of individual parameter on the porosity is laser power > hatch spacing > layer thickness > scan speed. Ultrasonic fatigue tests (20 kHz) were conducted for the SLMed specimens in high-cycle fatigue (HCF) and very-high-cycle fatigue (VHCF) regimes. TheS-Ndata show that the fatigue strength is greatly affected by the porosity: the group with the smallest porosity percentage having the highest fatigue strength in HCF and VHCF regimes. Then, the tests on the validation group were performed to verify the optimal combination of SLM processing parameters. Moreover, the observations by scanning electron microscopy revealed that fatigue cracks initiate at lack-of-fusion defects in the cases of surface and internal crack initiation. |
| Keyword | orthogonal experiment design processing parameters selective laser melting Ti-6Al-4V very-high-cycle fatigue |
| DOI | 10.1111/ffe.13361 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000574772400001 |
| WOS Keyword | ADDITIVELY MANUFACTURED TI-6AL-4V ; CRACK INITIATION ; MECHANICAL-PROPERTIES ; TITANIUM-ALLOY ; MICROSTRUCTURE ; OPTIMIZATION ; PREDICTION ; DEPOSITION ; STRENGTH ; POROSITY |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| Funding Project | Chinese Academy of Sciences[XDB22040503] ; Chinese Academy of Sciences[XDB22020201] ; National Natural Science Foundation of China[11932020] |
| Funding Organization | Chinese Academy of Sciences ; National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Zheng, Liang ; Hong, Youshi |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85313 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China |
| Recommended Citation GB/T 7714 | Du LM,Qian GA,Zheng L,et al. Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2020:17.Rp_Au:Zheng, Liang, Hong, Youshi |
| APA | 杜雷鸣,钱桂安,Zheng L,&洪友士.(2020).Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,17. |
| MLA | 杜雷鸣,et al."Influence of processing parameters of selective laser melting on high-cycle and very-high-cycle fatigue behaviour of Ti-6Al-4V".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2020):17. |
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| Jp2020324.pdf（52217KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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