Formation, structure and properties of biocompatible TiZrHfNbTa high-entropy alloys. Issue 6 (3rd June 2019)

• Record Type: Journal Article
• Authors: Yuan, Yuan; Wu, Yuan; Yang, Zhi; Liang, Xue; Lei, Zhifeng; Huang, Hailong; Wang, Hui; Liu, Xiongjun; An, Ke; Wu, Wei; Lu, Zhaoping
• Is Part Of: Materials research letters. Volume 7:Issue 6(2019)
• Page Start: 225
• Page End: 231
• Publication Date: 2019-06-03
• Subjects: High-entropy alloys -- Young's modulus -- mechanical biocompatibility -- magnetic susceptibility; Materials science -- Research -- Periodicals; Biomedical materials -- Research -- Periodicals; Composite materials -- Research -- Periodicals; Biomedical materials -- Research; Composite materials -- Research; Materials science -- Research; Periodicals; 620.1105
• DOI: 10.1080/21663831.2019.1584592
• Languages: English
• ISSNs: 2166-3831

Abstract

ABSTRACT: Biocompatibility of HEAs in the TiZrHfNbTa system in which all the constituents are non-toxic and allergy-free was scrutinized systematically, and novel biomechanical materials with a unique combination of low modulus (57 GPa, almost half that of conventional biomedical titanium alloys), good mechanical biocompatibility and low magnetic susceptibility (1.71 × 10 −6 cm 3 g −1, similar to that of pure Zr) were successfully developed. Moreover, the underlying mechanisms responsible for phase formation and promising properties were explored. This work not only offers a series of novel bio-metallic materials with prominent properties for practical applications, but also shed light on understanding of phase formation and strengthening of HEAs in general. GRAPHICAL ABSTRACT: IMPACT STATEMENT: Several biocompatible TiZrHfNbTa HEAs with prominent properties for practical applications were developed and the relevant alloy design principles were revealed.