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:
For steady-state deformation caused by grain-boundary diffusion and viscousgrain-boundary sliding, the creep rate of regular polyhedral grains is analyzed by theenergy-balance method. For the microstructure, the grain-grain interaction increases the degree ofsymmetry of diffusional field, resulting in a decrease of the effective diffusion distance. Meanwhile,the viscous grain-boundary sliding is found to decrease the creep rate. The present analysis revealsthat the grain-size exponent is dependent on the grain size and the grain-boundary viscosity: theexponent becomes unity for small grain sizes and/or high viscosity, while it is three for large grainsizes and/or low viscosity
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.565.pdf
