Ultrahigh hardness and biocompatibility of high-entropy alloy TiAlFeCoNi processed by high-pressure torsion
| Autor: | Parisa Edalati, Kaveh Edalati, Yongpeng Tang, Augusto Ducati Luchessi, Ricardo Floriano, Karina Danielle Pereira, Abbas Mohammadi |
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| Přispěvatelé: | Kyushu University, Universidade Estadual de Campinas (UNICAMP), Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2020 |
| Předmět: |
High-entropy alloys (HEAs)
Materials science Biocompatibility Lattice softening Cell Survival Entropy Iron Alloy CALPHAD (calculation of phase diagram) method chemistry.chemical_element Bioengineering Biocompatible Materials 02 engineering and technology Crystal structure engineering.material 010402 general chemistry 01 natural sciences Cell Line Biomaterials Severe plastic deformation (SPD) Mice Hardness Nickel Elastic Modulus Tensile Strength Alloys Animals Composite material Titanium Torsion (mechanics) Cobalt Nanoindentation 021001 nanoscience & nanotechnology Phase transformation 0104 chemical sciences chemistry Mechanics of Materials High pressure engineering Low elastic modulus 0210 nano-technology Aluminum |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1873-0191 |
| Popis: | Made available in DSpace on 2020-12-12T01:19:41Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01 Ministry of Education, Culture, Sports, Science and Technology Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Instituto Serrapilheira Despite significant studies on mechanical properties of high-entropy alloys (HEAs), there have been limited attempts to examine the biocompatibility of these alloys. In this study, a lattice-softened high-entropy alloy TiAlFeCoNi with ultrahigh hardness (examined by Vickers method), low elastic modulus (examined by nanoindentation) and superior activity for cell proliferation/viability/cytotoxicity (examined by MTT assay) was developed by employing imperial data and thermodynamic calculations. The designated alloy after casting was processed further by high-pressure torsion (HPT) to improve its hardness via the introduction of nanograins, dislocations and order-disorder transformation. The TiAlFeCoNi alloy with the L21-BCC crystal structure exhibited 170–580% higher hardness and 260–1020% better cellular metabolic activity compared to titanium and Ti-6Al-7Nb biomaterials, suggesting the high potential of HEAs for future biomedical applications. WPI International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) Kyushu University School of Applied Sciences University of Campinas (UNICAMP) Institute of Biosciences São Paulo State University (UNESP) Institute of Biosciences São Paulo State University (UNESP) Ministry of Education, Culture, Sports, Science and Technology: 19H05176 FAPESP: 2013/23620-4 FAPESP: 2018/15968-4 Instituto Serrapilheira: Serra-1709-17362 |
| Databáze: | OpenAIRE |
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