Mechanical and oxidation properties of Ti-XFe-γSi alloys
In: Materials science & engineering. A, Structural materials : properties, microstructure and processing, Jg. 328 (2002), Heft 1-2, S. 161-168
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Zugriff:
New Ti-based alloys having reasonable mechanical properties and good oxidation resistance were designed by alloying with low cost elements of iron and silicon. From tensile tests at room temperature and 400 °C, Ti-4 wt.% Fe-(0.5-2)wt.% Si alloys were found to have the optimum combination of strength and ductility, which are comparable to the Ti-6Al-4V alloy. The precipitation of fine Ti-silicides and the reduction in α/β colony sizes are primarily responsible for the obtained mechanical behavior. The air oxidation resistance of Ti-4 wt.% Fe-(0.5- 2)wt.% Si alloys between 700 and 1000 °C is far superior to that of the Ti-6Al-4V alloy, and even better than that of TiAl intermetallics. The formation of amorphous silica within the TiO2-rich oxide layers increased the oxidation resistance significantly.
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Mechanical and oxidation properties of Ti-XFe-γSi alloys
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Autor/in / Beteiligte Person: | LEE, D. B ; PARK, K. B ; JEONG, H. W ; KIM, S. E |
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Zeitschrift: | Materials science & engineering. A, Structural materials : properties, microstructure and processing, Jg. 328 (2002), Heft 1-2, S. 161-168 |
Veröffentlichung: | Amsterdam: Elsevier, 2002 |
Medientyp: | academicJournal |
Umfang: | print, 16 ref |
ISSN: | 0921-5093 (print) |
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