Design and Characterization of New Ti-Zr-Nb-(Mn) Medium Entropy Alloys for Biomedical Applications

β titanium alloys have been widely used as implantation inside the human body. Based on this, two β Ti-based medium entropy alloys (namely; Ti45Zr33Nb22 and Ti40Zr33Nb22Mn5, at. %) were designed using mean bond order (Bo) and mean d-orbital energy level (Md) diagram along with the CALPHAD approaches...

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Bibliographic Details
Published in:Key engineering materials 2022-09, Vol.931, p.35-40
Main Authors: Gepreel, Mohamed Abdel Hady, Eldabah, Nour Mahmoud, Kobayashi, Sengo
Format: Article
Language:English
Subjects:
Biomedical materials
Cold rolling
Compressive strength
Dendritic structure
Energy levels
Hardness
Medium entropy alloys
Phase diagrams
Titanium base alloys
Workability
Zirconium
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Summary:β titanium alloys have been widely used as implantation inside the human body. Based on this, two β Ti-based medium entropy alloys (namely; Ti45Zr33Nb22 and Ti40Zr33Nb22Mn5, at. %) were designed using mean bond order (Bo) and mean d-orbital energy level (Md) diagram along with the CALPHAD approaches. The two alloys showed single β phase composed of a dendritic structure. When 5 at. % of Ti was replaced by Mn in Ti45Zr33Nb22 alloy, the compressive yield strength has increased. Furthermore, the hardness was increased upon the addition of Mn. Finally, Ti45Zr33Nb22 alloy showed good cold workability and slight hardness increase upon cold rolling up to 90% reduction.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/p-84w2s6