Novel single crystalline-like non-equiatomic TiZrHfNbTaMo bio-high entropy alloy (BioHEA) developed by laser powder bed fusion
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SCOPUS
- Title
- Novel single crystalline-like non-equiatomic TiZrHfNbTaMo bio-high entropy alloy (BioHEA) developed by laser powder bed fusion
- Authors
- Gokcekaya, Ozkan; Ishimoto, Takuya; Nishikawa, Yuki; Kim, Yong Seong; Matsugaki, Aira; Ozasa, Ryosuke; Weinmann, Markus; Schnitter, Christoph; Stenzel, Melanie; Kim, Hyoung Seop; Miyabayashi, Yoshitsugu; Nakano, Takayoshi
- Date Issued
- 2023-04
- Publisher
- TAYLOR & FRANCIS INC
- Abstract
- This study developed a non-equiatomic Ti28.33Zr28.33Hf28.33Nb6.74Ta6.74Mo1.55 super-solid solutionized BioHEA using laser powder bed fusion (LPBF) to reach the full potential as BioHEA. We succeeded in significant suppression of elemental segregation, thus, resulting in a single crystalline-like texture by activating layer-to-layer epitaxial growth. Relatively low Young's modulus was achieved in the single crystalline-like BioHEA. Moreover, LPBF-fabricated BioHEA exhibited significantly higher yield stress (1355-1426 MPa) due to the effective solid solution hardening compared to as-cast counterpart with marked segregation (949 MPa), and good biocompatibility. This is first report achieving BioHEA with low modulus, excellent strength-ductility balance, and good biocompatibility via LPBF. IMPACT STATEMENT This study achieved super-solid-solutionized and single crystalline-like TiZrHfNbTaMo bio-high entropy alloy using laser powder bed fusion, resulting in low Young's modulus along < 001 > oriented direction, excellent strength-ductility balance, and good cytocompatibility.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/117495
- DOI
- 10.1080/21663831.2022.2147406
- ISSN
- 2166-3831
- Article Type
- Article
- Citation
- MATERIALS RESEARCH LETTERS, vol. 11, no. 4, page. 274 - 280, 2023-04
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