TY - JOUR
T1 - Experimental (TEM and STEM) investigation and theoretical approach to the fatigue-induced dissolution of δ′ precipitates in a 2.5 wt% Al-Li alloy
AU - Brechet, Y.
AU - Louchet, F.
AU - Marchionni, C.
AU - Verger-Gaugry, J. L.
PY - 1987/9
Y1 - 1987/9
N2 - The fatigue microstructure of an Al-2.5 wt%Li alloy with small δ' precipitates has been investigated both by TEM and STEM (nanodiffraction and electron energy-loss spectroscopy). Specific features of strain localization have been evidenced which are made of lithium-depleted precipitate-free bands. A model is proposed to explain the redissolution of δ' precipitates inside the bands, based on an increase of their free energy due to shear-induced antiphase boundaries.
AB - The fatigue microstructure of an Al-2.5 wt%Li alloy with small δ' precipitates has been investigated both by TEM and STEM (nanodiffraction and electron energy-loss spectroscopy). Specific features of strain localization have been evidenced which are made of lithium-depleted precipitate-free bands. A model is proposed to explain the redissolution of δ' precipitates inside the bands, based on an increase of their free energy due to shear-induced antiphase boundaries.
UR - http://www.scopus.com/inward/record.url?scp=0023420168&partnerID=8YFLogxK
U2 - 10.1080/01418618708214391
DO - 10.1080/01418618708214391
M3 - Article
AN - SCOPUS:0023420168
SN - 0141-8610
VL - 56
SP - 353
EP - 366
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 - 3
ER -