Understanding the properties of low-cost iron-containing powder metallurgy titanium alloys
| Autor: | Elisa Maria Ruiz-Navas, Leandro Bolzoni, Elena Gordo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Fabrication Chemical substance Ultra-high vacuum Intermetallic chemistry.chemical_element 02 engineering and technology Ingeniería Industrial Brittleness Materials Science(all) Powder metallurgy lcsh:TA401-492 General Materials Science Materiales 020502 materials Homogeneous microstructure Mechanical Engineering Metallurgy Titanium alloy Química Low-cost titanium alloy 021001 nanoscience & nanotechnology 0205 materials engineering chemistry Mechanics of Materials lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology Blending elemental (BE) Titanium Titanium powder metallurgy |
| Zdroj: | Materials & Design, Vol 110, Iss, Pp 317-323 (2016) |
| ISSN: | 0264-1275 |
| DOI: | 10.1016/j.matdes.2016.08.010 |
| Popis: | The high production costs of titanium in comparison to other structural metals is the main limiting factor for the wide employment of titanium. Cost reduction can be addressed considering creative fabrication methods and/or formulating new chemical compositions. In this work the fabrication of low-cost iron-containing powder metallurgy titanium alloys is studied by using a spherical 85Fe/15Ni powder whose small particle size and spherical morphology favours both the densification of the material and the diffusion of the alloying elements. The designed composition are obtained by the blending elemental approach and processed by means of the conventional powder metallurgy route. The high vacuum sintered alpha + beta alloys show homogeneous microstructure and the formation of brittle intermetallic phases is prevented as checked by XRD and DTA analysis. Similar physical and mechanical behaviour to wrought-equivalent structural titanium alloys is obtained for these new low-cost alloys which, therefore, are potential materials for cheaper structural titanium components. The authors want to acknowledge the starting support from New Zealand Ministry of Business, Innovation and Employment (MBIE) (UOWX1402) through the TiTeNZ (Titanium Technologies New Zealand) research contract. |
| Databáze: | OpenAIRE |
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