Achieving a combination of decent biocompatibility and large near-linear-elastic deformation behavior in shell-core-like structural TiNb/NiTi composite

Shun Guo; Tinghui Wu; Minkyung Kwak; Weiqun Lu; Wen Ma; Qing Liu; Haixia Liu; Qingkun Meng; Guanglei Liu; Xiaonong Cheng; Xinqing Zhao

doi:10.1016/j.jmbbm.2021.104789

Achieving a combination of decent biocompatibility and large near-linear-elastic deformation behavior in shell-core-like structural TiNb/NiTi composite

J Mech Behav Biomed Mater. 2021 Nov:123:104789. doi: 10.1016/j.jmbbm.2021.104789. Epub 2021 Aug 21.

Authors

Shun Guo¹, Tinghui Wu², Minkyung Kwak³, Weiqun Lu⁴, Wen Ma⁵, Qing Liu⁶, Haixia Liu⁷, Qingkun Meng⁸, Guanglei Liu², Xiaonong Cheng², Xinqing Zhao⁹

Affiliations

¹ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China; Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea. Electronic address: shunguo@ujs.edu.cn.
² School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China.
³ Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
⁴ School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
⁵ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China; Youke Publishing Co., Ltd., Grinm Group Co., Ltd., Beijing, 100088, China.
⁶ Youke Publishing Co., Ltd., Grinm Group Co., Ltd., Beijing, 100088, China; School of Materials Science and Engineering, Beihang University, Beijing, 100191, China.
⁷ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China. Electronic address: liuhx@ujs.edu.cn.
⁸ School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, 221116, China.
⁹ School of Materials Science and Engineering, Beihang University, Beijing, 100191, China. Electronic address: xinqing@buaa.edu.cn.

PMID: 34450418
DOI: 10.1016/j.jmbbm.2021.104789

Abstract

As expected from the material design, a novel shell-core-like structural TiNb/NiTi composite possessing both decent biocompatibility and large near-linear-elastic deformation behavior (namely as near-linear elasticity accompanied by high elastic strain limit) was prepared successfully by a hot pack-rolling combined with cold rolling procedure. Non-cytotoxic TiNb outer shell obstructs the NiTi inner core from cells and provides the decent biocompatibility of TiNb/NiTi composite. Large near-linear-elastic deformation behavior for this TiNb/NiTi composite has been confirmed to be associated with intrinsic elastic deformation, two types of reversible stress-induced martensitic transformations (i.e. β↔α'' and B2↔B19' transformations) occurring in a homogeneous manner, together with the (001) compound twin in B19' martensitic plates. Our study provides a new design approach for developing NiTi-based composites with both decent biocompatibility and large near-linear-elastic deformation behavior for biomedical or engineering applications.

Keywords: Large elastic deformability; Stress-induced martensitic transformation; Tensile deformation behavior; TiNb/NiTi composite.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Elasticity
Materials Testing
Titanium*

Substances

Titanium