ISSN:
1013-9826
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:
A new interpretation model, instead of classical Kohlrausch-Williams-Watt (KWW) equation,was applied to interpret stress relaxation behavior of Si3N4-Y2Si2O7 ceramics. Results revealed that thenew model could obtain reasonable relaxation plastic viscosity and viscoelastic viscosity under testingtemperature range of 1300°C~1575°C. From the plotted curve of viscosity vs 1/RT, an activation energychange occurred around 1500°C was found for both plastic viscosity and viscoelastic viscosity curves.This change, which indicated the microstructure change, was in good agreement with the significantdecrease of high temperature strength retention property
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1420.pdf
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