TY - JOUR
T1 - Low-temperature dynamic precipitation in a supersaturated Al-Zn-Mg alloy and related strain hardening
AU - Deschamps, A.
AU - Niewczas, M.
AU - Bley, F.
AU - Brechet, Y.
AU - Embury, J. D.
AU - Le Sinq, L.
AU - Livet, F.
AU - Simon, J. P.
PY - 1999/10
Y1 - 1999/10
N2 - Dynamic precipitation during low-temperature deformation of a supersaturated Al-Zn-Mg alloy has been studied by small-angle X-ray scattering and in-situ resistivity in the temperature range 4.2-300 K. At 300 K, dynamic precipitation is observed both for the material strained in the form of a solid solution and for the material strained in the partially aged state, that is containing Guinier-Preston (GP) zones; In the first case, dynamic precipitation occurs by nucleation of precipitates 5 Ǻ in diameter, and in the second case it occurs by coarsening of existing precipitates. In all cases the dynamic precipitation results in an unusual-strain hardening behaviour in which the work-hardening rate is very high and essentially temperature independent.
AB - Dynamic precipitation during low-temperature deformation of a supersaturated Al-Zn-Mg alloy has been studied by small-angle X-ray scattering and in-situ resistivity in the temperature range 4.2-300 K. At 300 K, dynamic precipitation is observed both for the material strained in the form of a solid solution and for the material strained in the partially aged state, that is containing Guinier-Preston (GP) zones; In the first case, dynamic precipitation occurs by nucleation of precipitates 5 Ǻ in diameter, and in the second case it occurs by coarsening of existing precipitates. In all cases the dynamic precipitation results in an unusual-strain hardening behaviour in which the work-hardening rate is very high and essentially temperature independent.
UR - https://www.scopus.com/pages/publications/0040707156
U2 - 10.1080/01418619908214295
DO - 10.1080/01418619908214295
M3 - Article
AN - SCOPUS:0040707156
SN - 0141-8610
VL - 79
SP - 2485
EP - 2504
JO - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
JF - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
IS - 10
ER -