Microstructure evolution and improved properties of laminated titanium matrix composites with gradient equiaxed grains

doi:10.1007/s11431-020-1619-7

IMR OpenIR

	Microstructure evolution and improved properties of laminated titanium matrix composites with gradient equiaxed grains
	Wang Shuai 1; Huang LuJun 1,2; Jiang Shan 1; Zhang Rui 1; An Qi 1; Sun Yuan 3; Geng Lin 1,2
通讯作者	Huang LuJun(huanglujun@hit.edu.cn) ; Sun Yuan(yuansun@imr.ac.cn)
	2020-11-03
发表期刊	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN	1674-7321
页码	11
摘要	With the purpose of improving both the strength and ductility, gradient equiaxed grains were successfully achieved in the matrix of the laminated TiB/Ti-TiB/Ti-6.58Al-1.76Zr-1.04V-0.89Mo composite via water quenching (WQ) and thermal compressing deformation. Gradient equiaxed grains varied from approximately 1.0 mu m in TiB/Ti-6.58Al-1.76Zr-1.04V-0.89Mo layer to 5.5 mu m in TiB/Ti layer. The formation of the gradient structure was related to the alloying elements diffusion during the initial sintering process, and the equiaxed shape was constructed by dynamic recrystallization during thermal compressing. WQ treatment before thermal compressing was adopted to obtain fine lamellar structure, which promoted the segmentation of a lamellae, and accelerated the dynamic recrystallization process. Raising the quenching temperature can increase the proportion of equiaxed grains in the composite, which improved both the bending strength and ductility. Compared with the as-sintered specimen, the specimen with gradient equiaxed grains exhibited nearly 30% enhancement in flexural strength (from 1719 to 2218 MPa), and the ultimate bending fracture strain was increased from 7.0% to 17.2%. This significant improvement should be attributed to the coordination deformation by interface gradient grains, the grain refinement strengthening and the good balance between strength and ductility of the recrystallized equiaxed grains.
关键词	titanium matrix composites laminated structure gradient equiaxed grains microstructure evolution dynamic recrystallization bending properties
资助者	National Key R&D Program of China ; Guangdong Province Key Area RD Program ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
DOI	10.1007/s11431-020-1619-7
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2017YFB0703100] ; Guangdong Province Key Area RD Program[2019B010942001] ; National Natural Science Foundation of China[51822103] ; National Natural Science Foundation of China[51801206] ; National Natural Science Foundation of China[51731009] ; Fundamental Research Funds for the Central Universities[HIT.BRETIV.201902]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
WOS记录号	WOS:000587109200002
出版者	SCIENCE PRESS
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141277
专题	中国科学院金属研究所
通讯作者	Huang LuJun; Sun Yuan
作者单位	1.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China 2.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang Shuai,Huang LuJun,Jiang Shan,et al. Microstructure evolution and improved properties of laminated titanium matrix composites with gradient equiaxed grains[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2020:11.
APA	Wang Shuai.,Huang LuJun.,Jiang Shan.,Zhang Rui.,An Qi.,...&Geng Lin.(2020).Microstructure evolution and improved properties of laminated titanium matrix composites with gradient equiaxed grains.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,11.
MLA	Wang Shuai,et al."Microstructure evolution and improved properties of laminated titanium matrix composites with gradient equiaxed grains".SCIENCE CHINA-TECHNOLOGICAL SCIENCES (2020):11.