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 deformation behavior of the Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass(Vit1) in the supercooled liquid region was investigated. The stress-strain relations for Vit1 at thedifferent specimen sizes were established in a uniaxial compression test using the microformingsystem. Furthermore, the effects of forming time, temperature and punch velocity on the flow stress ofthe specimen with a typical size of Φ1×1.5 mm were analyzed. The results indicate that Vit1 hasexcellent superplastic microformability at minimum forming time, higher temperature and lowerpunch velocity. Based on the research, Vit1 microgears with reference diameter of Φ1 mm andmodulus of 0.1 mm were manufactured using the closed die forging. Optimum processing parameterswere obtained. In order to evaluate the quality of Vit1 microgears, scanning electron microscope,atomic force microscope and nanoindentation tests were applied. It is found that the parts with goodqualities can be formed successfully in the supercooled liquid region
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.551-552.569.pdf
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