ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The high-temperature deformation behavior of the single-phase α (Ti-7.0Al-1.5V) and α +β (Ti-6Al-4V) alloy were determined and compared within the framework of self-consistent schemeat various temperature ranges. For this purpose, isothermal hot compression tests were conducted attemperatures between 650°C ~ 950°C to determine the effect of α/β phase volume fraction onaverage flow stress under hot-working condition. The flow behavior of α phase was estimated fromthe compression test results of single-phase α alloy whose chemical composition is close to that of αphase of Ti-6Al-4V alloy. On the other hand, the flow stress of β phase in Ti-6Al-4V was predictedby using self-consistent method. The flow stress of α phase was higher than that of β phase above750°C, while the β phase revealed higher flow stress than α phase at 650°C. Also, at temperatureabove 750°C, the predicted strain rate of β phase was higher than that of α phase. It was found that therelative strength between α and β phase significantly varied with temperature
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.3607.pdf
