Open AccessTRANSFORMATION TEMPERATURE OF GRAIN BOUNDARY RELAXATION IN ALUMINIUM BICRYSTALS
Author(s) -
Yuhua Duan,
Ge Tao,
Tianyi Zhang
Publication year - 1993
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.42.297
Subject(s) - materials science , grain boundary , aluminium , torsion (gastropod) , creep , condensed matter physics , melting temperature , tilt (camera) , relaxation (psychology) , thermodynamics , composite material , microstructure , geometry , physics , medicine , psychology , social psychology , surgery , mathematics
Anelastic creep curves of [110] symme rical tilt boundaries with mis-orientation angles 60°and 153.4°in aluminium bicrystals has been measured in torsion. It was found that the relaxation strength associated with the boundary becomes zero below a temperature T0 which has a value of about one half of the melting temperature Tm of bulk aluminium. This shows that a perceptible change of the internal structure of the grain boundary has taken place around this temperature.