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Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition
Alternative TitleMicrostructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition
He Bo; Lei Tao; Sun Changqing; Yang Guang
2019
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume48Issue:9Pages:3048-3054
AbstractIn order to study the microstructure and fatigue properties of laser deposited TC4/TC11 gradient materials, directly transited and gradiently transited TC4/TC11 composite materials were prepared by laser deposition manufacturing technology. The microstructures of composite materials by different transition were observed, the fatigue properties of these two composite materials under stresses of 550 MPa and 800 MPa were tested, and fatigue fractures were analyzed. The results show that the interface of the microstructure of the gradient material with 3 transition layers is not obvious, and microstructures of TC4 and TC11 are integrated more tightly in the transition zone than that of the directly transition composite materials. The fatigue life of the gradient material with 3 transition layers under either stress is higher than that of the direct transition, which is relatively increased by 129.3% under low stress and 81.8% under high stress. The direct transition composite material cracks along the bunch of alpha-sheet during crack propagation, with a large sliding surface and a short fatigue life. The cracks of gradient material with 3 transition layers grow along a single alpha-sheet, the slip plane is small, and the crack propagation path is more tortuous, which prolongs the fatigue life.
Keywordlaser deposition manufacturing titanium alloy gradient materials microstructure fatigue properties
Indexed ByCSCD
Language英语
CSCD IDCSCD:6574817
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/149013
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
He Bo,Lei Tao,Sun Changqing,et al. Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(9):3048-3054.
APA He Bo,Lei Tao,Sun Changqing,&Yang Guang.(2019).Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition.RARE METAL MATERIALS AND ENGINEERING,48(9),3048-3054.
MLA He Bo,et al."Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition".RARE METAL MATERIALS AND ENGINEERING 48.9(2019):3048-3054.
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