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High cycle and very high cycle fatigue behavior at two stress ratios of Ti 6Al 4V manufactured via laser powder bed fusion with different surface states

文献类型：期刊论文

作者Fu, Rui; Zheng, Liang; Zhong, Zheng; Hong YS(洪友士)
刊名FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
出版日期2023
关键词laser powder bed fusion stress ratio surface roughness Ti 6Al 4V very high cycle fatigue
ISSN号8756-758X
DOI10.1111/ffe.13985
英文摘要The high cycle fatigue (HCF) and very high cycle fatigue (VHCF) behavior of Ti 6Al 4V manufactured by laser powder bed fusion (L PBF) was investigated to reveal the effects of surface roughness and stress ratio on fatigue performance. Fatigue tests were performed by an ultrasonic vibration machine with a frequency of 20 kHz. The fatigue strength of surface polished specimens is generally higher than that of as built specimens in HCF and VHCF regimes. Fatigue cracks initiated from the subsurface of as built and surface polished L PBF Ti 6Al 4V. The values of size and depth for the defects that acted as fatigue crack origins present large scattering for L PBF Ti 6Al 4V due to the interaction between surface roughness and subsurface defects. For surface polished L PBF Ti 6Al 4V, fatigue cracks have almost the same resistance to propagation at both stress ratios of R = 1 and 0.7.
分类号二类
WOS研究方向Engineering, Mechanical ; Materials Science, Multidisciplinary
语种英语
WOS记录号WOS:000943391700001
资助机构National Natural Science Foundation of China [11932020, 11932005] ; Shenzhen Fundamental Research Program [JCYJ20180306171946292]
其他责任者Zhong, Z (corresponding author), Harbin Inst Technol Shenzhen, Sch Sci, Shenzhen 518055, Peoples R China. ; Hong, YS (corresponding author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/91885]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Harbin Inst Technol Shenzhen, Sch Sci, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Fu, Rui,Zheng, Liang,Zhong, Zheng,et al. High cycle and very high cycle fatigue behavior at two stress ratios of Ti 6Al 4V manufactured via laser powder bed fusion with different surface states[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2023.
APA Fu, Rui,Zheng, Liang,Zhong, Zheng,&洪友士.(2023).High cycle and very high cycle fatigue behavior at two stress ratios of Ti 6Al 4V manufactured via laser powder bed fusion with different surface states.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES.
MLA Fu, Rui,et al."High cycle and very high cycle fatigue behavior at two stress ratios of Ti 6Al 4V manufactured via laser powder bed fusion with different surface states".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2023).

入库方式： OAI收割

来源：力学研究所

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