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The Description of the Isothermal Decomposition Processes in AlSc Alloys by means of Electric Resistivity Measurements and TEM Investigations
Author(s) -
Wolter R.,
Siebert P.,
Fabian H.G.
Publication year - 1993
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170280111
Subject(s) - isothermal process , electrical resistivity and conductivity , decomposition , materials science , atmospheric temperature range , thermodynamics , kinetics , analytical chemistry (journal) , chemistry , physics , organic chemistry , quantum mechanics
The decomposition behaviour of two AlSc alloys ( c Sc = 0.18; 0.36 at.%) after direct quench to room temperature and subsequent ageing at temperatures in the range 200 °C ≦ T a ≦ 550 °C was investigated by means of isothermal resistivity measurements and TEM. In the temperature range 325 °C ≦ T a ≦ 400 °C both alloys show independent of the Sc content an “inversion” of the decomposition kinetics, obviously caused by the transition of the coherent into the incoherent Al 3 Sc phase.