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

IMR OpenIR

	Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition
其他题名	Microstructure and Fatigue Properties of TC4/TC11 Gradient Materials by Laser Deposition
	He Bo; Lei Tao; Sun Changqing; Yang Guang
	2019
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	48 期号:9 页码:3048-3054
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.
关键词	laser deposition manufacturing titanium alloy gradient materials microstructure fatigue properties
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:6574817
引用统计	被引频次：4[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/149013
专题	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.