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An In‐situ Investigation of the Creep Mechanisms of Aluminium at Intermediate Temperatures
Author(s) -
Myshlyaev M. M.,
Martin J. L.,
Caillard D.
Publication year - 1979
Publication title -
kristall und technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0023-4753
DOI - 10.1002/crat.19790141107
Subject(s) - creep , aluminium , materials science , dislocation , in situ , crystallite , activation energy , deformation (meteorology) , metallurgy , strain rate , composite material , crystallography , chemistry , organic chemistry
In‐situ deformation experiments are performed at 150 °C and 200 °C after a macroscopic creep test in polycrystalline aluminium. The significant microscopie events which take place during the constant strain rate stage of creep are subboundary migration and destruction, dislocation multiplication, interaction of individual dislocations with the three dimensional network inside the cells and with the subboundaries. The observations are discussed in terms of different models interpreting the measured activation energy and area.