TY - JOUR
T1 - Synthesis of biocompatible high-entropy alloy TiNbZrTaHf by high-pressure torsion
AU - González-Masís, Jeimmy
AU - Cubero-Sesin, Jorge M.
AU - Campos-Quirós, Alexánder
AU - Edalati, Kaveh
N1 - Funding Information:
The authors would like to thank Ms. Parisa Edalati, Dr. Qing Wang, Dr. Abbas Mohammadi and Prof. Zenji Horita of Kyushu University, as well as the Center for Materials Research and Extension (CIEMTEC) and the School of Materials Science and Engineering from Instituto Tecnológico de Costa Rica for their support during the experimental tests. This work was supported in part by WPI-I2CNER, Kyushu University, Japan, in part by the Light Metals Educational Foundation of Japan , in part by Grants-in-Aid for Scientific Research from MEXT , Japan ( 19H05176, 21H00150 ), and in part by funding from Instituto Tecnológico de Costa Rica (Grant CF1490027 from the Vice-rectory of Research and Extension and the Internship Fund from the Doctoral Program in Engineering).
Funding Information:
The authors would like to thank Ms. Parisa Edalati, Dr. Qing Wang, Dr. Abbas Mohammadi and Prof. Zenji Horita of Kyushu University, as well as the Center for Materials Research and Extension (CIEMTEC) and the School of Materials Science and Engineering from Instituto Tecnol?gico de Costa Rica for their support during the experimental tests. This work was supported in part by WPI-I2CNER, Kyushu University, Japan, in part by the Light Metals Educational Foundation of Japan, in part by Grants-in-Aid for Scientific Research from MEXT, Japan (19H05176, 21H00150), and in part by funding from Instituto Tecnol?gico de Costa Rica (Grant CF1490027 from the Vice-rectory of Research and Extension and the Internship Fund from the Doctoral Program in Engineering).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/21
Y1 - 2021/9/21
N2 - High-entropy alloys (HEAs), a novel type of materials with high configurational entropy, have aroused a huge interest due to a promising range of functional properties including biocompatibility. In this study, the high-pressure torsion (HPT) method was implemented as a mechanical alloying route to synthesize biocompatible nanostructured HEAs with the bcc structure. An equiatomic quinary TiNbZrTaHf HEA was successfully synthesized via the HPT method and its characteristics were compared with the binary TiNb, ternary TiNbZr and quaternary TiNbZrTa alloys to have an insight into the effect of configurational entropy on microstructure and mechanical properties of these biomaterials. The grain size decreased, the strain-rate sensitivity reduced, and the hardness increased with increasing the number of principal elements from 2 to 3, but these variations became less significant with further increase in the configurational entropy. Small nanograins, solid solution hardening, dislocation activity together with high entropy effect in the HEA led to a high hardness of 564 Hv and a moderate elastic modulus of 79 GPa which are promising mechanical properties for biomedical applications.
AB - High-entropy alloys (HEAs), a novel type of materials with high configurational entropy, have aroused a huge interest due to a promising range of functional properties including biocompatibility. In this study, the high-pressure torsion (HPT) method was implemented as a mechanical alloying route to synthesize biocompatible nanostructured HEAs with the bcc structure. An equiatomic quinary TiNbZrTaHf HEA was successfully synthesized via the HPT method and its characteristics were compared with the binary TiNb, ternary TiNbZr and quaternary TiNbZrTa alloys to have an insight into the effect of configurational entropy on microstructure and mechanical properties of these biomaterials. The grain size decreased, the strain-rate sensitivity reduced, and the hardness increased with increasing the number of principal elements from 2 to 3, but these variations became less significant with further increase in the configurational entropy. Small nanograins, solid solution hardening, dislocation activity together with high entropy effect in the HEA led to a high hardness of 564 Hv and a moderate elastic modulus of 79 GPa which are promising mechanical properties for biomedical applications.
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U2 - 10.1016/j.msea.2021.141869
DO - 10.1016/j.msea.2021.141869
M3 - Article
AN - SCOPUS:85112156045
SN - 0921-5093
VL - 825
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
M1 - 141869
ER -