| Autor: |
Nwobu, A. I. P., Flower, H. M., West, D. R. F. |
| Zdroj: |
Materials Science & Technology; May 1991, Vol. 7 Issue: 5 p391-398, 8p |
| Abstrakt: |
An investigation has been made of the constitution of the titanium rich partial Ti–V–Fe–Al system in the composition range applicable to commercial a+ß and ß Ti–V–Fe–Al alloys (e.g. Ti–10V–2Fe–3Al alloy) and at temperatures between 650 and 800°C. Partial Ti–V–Fe isothermal sections for alloys containing ~4 wt-%Al and V and Fe in a ratio =1:1 show only a and ß as the equilibrium phases for compositions up to 13 wt-%V and 4 wt-%Fe. The position of the a+ß/ß boundary is temperature dependent and its shape is affected by the amount of aluminium present in the ß in equilibrium with a in the quaternary Ti–V–Fe–Al alloys. By contrast, the a/a+ß boundary is independent of these parameters. Microstructural features relating to morphology and volume fractions of a and ß phases have been investigated and, together with the compositions of a and ß, are discussed in the context of alloy properties and processing.MST/1323 |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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