Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Solid state phenomena
Vol. 139 (Apr. 2008), p. 89-94
ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
The paper is devoted to the research of diffusion mechanism in Ni3Al intermetallide overgrain boundaries of tilt 〈111〉 and 〈100〉 by the method of molecular dynamics. It was found thatgrain boundary diffusion represented the combination of three main mechanisms: migration ofatoms along the nuclei of grain boundary dislocations, cyclic mechanism near the nuclei and theformation of the chain of displaced atoms from one nucleus of dislocation to the nucleus of theother one. Diffusion mobility of Ni atoms was essentially bigger than the mobility of Al atoms.Grain boundary slipping and intergrain slipping were also observed during the deformation of thebicrystal
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.139.89.pdf
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