Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition

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	Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition
	He Bo; Lei Tao; Sun Changqing; Yang Guang
刊名	RARE METAL MATERIALS AND ENGINEERING
	2019
卷号	48 期号:9 页码:3048-3054
关键词	laser deposition manufacturing titanium alloy gradient materials microstructure fatigue properties
ISSN号	1002-185X
其他题名	Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition
英文摘要	In 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.
语种	英语
CSCD记录号	CSCD:6574817
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/149012]
专题	金属研究所_中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 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.