Ultrafine-grained Ti6Al7Nb-xCu alloy with ultrahigh strength and exceptional biomedical properties

doi:10.1016/j.jmst.2023.04.035

IMR OpenIR

	Ultrafine-grained Ti6Al7Nb-xCu alloy with ultrahigh strength and exceptional biomedical properties
	Li, Yi 1,2; Wang, Hai 1; Koenigsmann, Konrad 3; Liu, Hui 1; Zhang, Shuyuan 1; Ren, Ling 1,4; Yang, Ke 1
通讯作者	Ren, Ling(lren@imr.ac.cn)
	2023-11-20
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	164 页码:68-78
摘要	Grain refinement has been found to be able to improve the strength of metals without reducing their plasticity or ductility. In this work, ultrafine-grained Ti6Al7Nb-xCu (x = 0, 3 wt%, 6 wt%, 9 wt%) alloys were fabricated based on the clinically used Ti6Al7Nb alloy via Cu alloying fabrication strategy combined with dynamic recrystallization (DRX) from martensite during hot work. Our results indicate that Cu alloy-ing is not only effective in reducing the width of martensite laths after quenching in the & beta; phase region but also increases the nucleation rate of DRX during the high-temperature deformation. Additionally, the Ti2Cu phase that precipitates from the matrix can pin the grain boundaries and inhibit their growth dur -ing the high-temperature deformation. The optimal Cu concentration of Ti6Al7Nb-xCu alloy is determined to be 6 wt%, and the optimal deformation temperature is determined to be 750 & DEG;C. At this Cu content and deformation temperature, the grain size is only 270 nm, the tensile strength is up to 1266 & PLUSMN;10 MPa, and the elongation is 17%. Compared with the commercial Ti6Al7Nb alloy, the ultrafine-grained Ti6Al7Nb-6Cu alloy has better overall mechanical properties, good biocompatibility, and unique antibacterial properties. This work provides a theoretical basis for fabricating the new antibacterial titanium-based alloys with high strength. & COPY; 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	High strength titanium alloy Ultrafine grain Antibacterial Dynamic recrystallization
资助者	National Key Re- search and Development Program of China ; Bintech-IMR Ramp;D Program
DOI	10.1016/j.jmst.2023.04.035
收录类别	SCI
语种	英语
资助项目	National Key Re- search and Development Program of China[2022YFC2406003] ; Bintech-IMR Ramp;D Program[GYY-JSBU-2022-008]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001022421500001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：2[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/321006/178415
专题	中国科学院金属研究所
通讯作者	Ren, Ling
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Univ Chicago, Chicago, IL 60637 USA 4.Binzhou Inst Technol, Shandong Key Lab Adv Aluminum Mat & Technol, Binzhou 256606, Peoples R China
推荐引用方式 GB/T 7714	Li, Yi,Wang, Hai,Koenigsmann, Konrad,et al. Ultrafine-grained Ti6Al7Nb-xCu alloy with ultrahigh strength and exceptional biomedical properties[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,164:68-78.
APA	Li, Yi.,Wang, Hai.,Koenigsmann, Konrad.,Liu, Hui.,Zhang, Shuyuan.,...&Yang, Ke.(2023).Ultrafine-grained Ti6Al7Nb-xCu alloy with ultrahigh strength and exceptional biomedical properties.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,164,68-78.
MLA	Li, Yi,et al."Ultrafine-grained Ti6Al7Nb-xCu alloy with ultrahigh strength and exceptional biomedical properties".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 164(2023):68-78.