Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications
The HIP post-processing step is required for developing next generation of advanced powder metallurgy titanium alloys for orthopedic and dental applications. The influence of the hot isostatic pressing (HIP) post-processing step on structural and phase changes, porosity healing, and mechanical stren...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/7/1027 |
| _version_ | 1797528664533893120 |
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| author | Joan Lario Ángel Vicente Vicente Amigó |
| author_facet | Joan Lario Ángel Vicente Vicente Amigó |
| author_sort | Joan Lario |
| collection | DOAJ |
| description | The HIP post-processing step is required for developing next generation of advanced powder metallurgy titanium alloys for orthopedic and dental applications. The influence of the hot isostatic pressing (HIP) post-processing step on structural and phase changes, porosity healing, and mechanical strength in a powder metallurgy Ti35Nb2Sn alloy was studied. Powders were pressed at room temperature at 750 MPa, and then sintered at 1350 °C in a vacuum for 3 h. The standard HIP process at 1200 °C and 150 MPa for 3 h was performed to study its effect on a Ti35Nb2Sn powder metallurgy alloy. The influence of the HIP process and cold rate on the density, microstructure, quantity of interstitial elements, mechanical strength, and Young’s modulus was investigated. HIP post-processing for 2 h at 1200 °C and 150 MPa led to greater porosity reduction and a marked retention of the β phase at room temperature. The slow cooling rate during the HIP process affected phase stability, with a large amount of α”-phase precipitate, which decreased the titanium alloy’s yield strength. |
| first_indexed | 2024-03-10T10:02:36Z |
| format | Article |
| id | doaj.art-540dd6ab9aca4b0dad6106b2a7985895 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T10:02:36Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-540dd6ab9aca4b0dad6106b2a79858952023-11-22T01:49:19ZengMDPI AGMetals2075-47012021-06-01117102710.3390/met11071027Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical ApplicationsJoan Lario0Ángel Vicente1Vicente Amigó2DIMM ETSII, Universitat Politècnica de València, Camino de Vera s/n, 5E Building, 46022 Valencia, SpainDIMM ETSII, Universitat Politècnica de València, Camino de Vera s/n, 5E Building, 46022 Valencia, SpainDIMM ETSII, Universitat Politècnica de València, Camino de Vera s/n, 5E Building, 46022 Valencia, SpainThe HIP post-processing step is required for developing next generation of advanced powder metallurgy titanium alloys for orthopedic and dental applications. The influence of the hot isostatic pressing (HIP) post-processing step on structural and phase changes, porosity healing, and mechanical strength in a powder metallurgy Ti35Nb2Sn alloy was studied. Powders were pressed at room temperature at 750 MPa, and then sintered at 1350 °C in a vacuum for 3 h. The standard HIP process at 1200 °C and 150 MPa for 3 h was performed to study its effect on a Ti35Nb2Sn powder metallurgy alloy. The influence of the HIP process and cold rate on the density, microstructure, quantity of interstitial elements, mechanical strength, and Young’s modulus was investigated. HIP post-processing for 2 h at 1200 °C and 150 MPa led to greater porosity reduction and a marked retention of the β phase at room temperature. The slow cooling rate during the HIP process affected phase stability, with a large amount of α”-phase precipitate, which decreased the titanium alloy’s yield strength.https://www.mdpi.com/2075-4701/11/7/1027hot isostatic pressingβ-Type titanium alloybiomaterialphase transformationpowder metallurgy |
| spellingShingle | Joan Lario Ángel Vicente Vicente Amigó Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications Metals hot isostatic pressing β-Type titanium alloy biomaterial phase transformation powder metallurgy |
| title | Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications |
| title_full | Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications |
| title_fullStr | Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications |
| title_full_unstemmed | Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications |
| title_short | Evolution of the Microstructure and Mechanical Properties of a Ti35Nb2Sn Alloy Post-Processed by Hot Isostatic Pressing for Biomedical Applications |
| title_sort | evolution of the microstructure and mechanical properties of a ti35nb2sn alloy post processed by hot isostatic pressing for biomedical applications |
| topic | hot isostatic pressing β-Type titanium alloy biomaterial phase transformation powder metallurgy |
| url | https://www.mdpi.com/2075-4701/11/7/1027 |
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