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

文献类型：期刊论文

作者Wang Shuai1; Huang LuJun1,3; Jiang Shan1; Zhang Rui1; An Qi1; Sun Yuan2; Geng Lin1,3
刊名SCIENCE CHINA-TECHNOLOGICAL SCIENCES
出版日期2020-11-03
页码11
关键词titanium matrix composites laminated structure gradient equiaxed grains microstructure evolution dynamic recrystallization bending properties
ISSN号1674-7321
DOI10.1007/s11431-020-1619-7
通讯作者Huang LuJun(huanglujun@hit.edu.cn) ; Sun Yuan(yuansun@imr.ac.cn)
英文摘要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.
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
语种英语
WOS记录号WOS:000587109200002
出版者SCIENCE PRESS
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/141276]  
专题金属研究所_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.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, 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.

入库方式： OAI收割

来源：金属研究所

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