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:
In this study, superplastic tensile tests were carried out for Ti-6Al-4V alloy using differentinitial grain sizes (2.6 μm, 6.5μm and 16.2 μm) at a temperature of 920°C with an initial strain rate of1×10-3 s-1. To get an insight into the effect of grain size on the superplastic deformation mechanisms,the microstructures of deformed alloy were investigated by using an optical microscope andtransmission electron microscope (TEM). The results indicate that there is dramatic difference in thesuperplastic deformation mode of fine and coarse grained Ti-6Al-4V alloy. Meanwhile, grain growthinduced by superplastic deformation has also been clearly observed during deformation process, andthe grain growth model including the static and strain induced part during superplastic deformationwas utilized to analyze the data of Ti-6Al-4V alloy
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.551-552.387.pdf
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