Effects of density current on mechanical and electrochemical properties of B Ti-35Nb-6Mo alloy manufactured through electric resistance sintering
[EN] Ti-35Nb-6Mo alloys were fabricated using the Electrical Resistance Sintering (ERS) technique. Powders were produced by mechanical alloying and then sintered under electrical current densities: 10,11,12 and 13 kA. The microstructural, mechanical, and electrochemical properties of the alloys were...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:dnet:riunet______::e6be00708847fc0d2d65cfc161bf9d92 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/234705 |
| Access Level: | acceso abierto |
| Palabra clave: | B-Ti alloy Solidification ERS Mechanical properties |
| Sumario: | [EN] Ti-35Nb-6Mo alloys were fabricated using the Electrical Resistance Sintering (ERS) technique. Powders were produced by mechanical alloying and then sintered under electrical current densities: 10,11,12 and 13 kA. The microstructural, mechanical, and electrochemical properties of the alloys were evaluated. The effects of oxygen and nitrogen as interstitial elements were analyzed, revealing no significant difference in oxygen content among the alloys; however, the nitrogen content was found to be minimal according to the relationship: 0.06 (N)-12kA; 0.12(N)-10 and 11 kA. The samples were predominantly composed of the ß phase. Grain size increased with rising current density, and the elastic modulus (E) also showed an increase with higher current densities (13 kA>90 GPa and for 10 kA>110 GPa). The best results for tensile strength, Vickers microhardness (HV), and cantilever resistance were achieved at current densities of 11 and 12 kA. The best mechanical results were approximately: ¿600 MPa; 420HV; ¿¿600 MPa. Nanoindentation measurements revealed that the samples sintered at 11 and 12 kA exhibited greater variability in both E and HV across the samples, while 10 and 13 kA showed to be more homogeneous across the sample. The greatest corrosion properties were found for 12 kA condition alloy with: OCP: ¿ 0.11 V; Ecorr: ¿ 0.18 V; Icorr: 1.04 × 10¿ 7A and Rp: 3.5 × 105¿. This alloy sintered at 12 kA showing the highest polarization resistance, superior corrosion resistance, and the lowest corrosion current compared to the other conditions. |
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