TY - JOUR
T1 - Evolution of Grain Boundary Precipitates in an Al-Cu-Li Alloy During Aging
AU - Ott, Noémie
AU - Kairy, Shravan K.
AU - Yan, Yuanming
AU - Birbilis, Nick
N1 - Publisher Copyright:
© 2016, The Minerals, Metals & Materials Society and ASM International.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - The grain boundary microstructure of Al-Cu-Li alloy AA2050 was investigated for different isothermal aging times to rationalize intergranular corrosion (IGC) characteristics. In the underaged condition, the dominant grain boundary precipitates are fine T1 (Al2CuLi). Extended aging revealed that grain boundaries were decorated by large T1 precipitates and S′ phase (Al2CuMg), with S′ growth not dimensionally constrained. Such a transition in the precipitate type at grain boundaries is a unique feature of the Al-Cu-Li system.
AB - The grain boundary microstructure of Al-Cu-Li alloy AA2050 was investigated for different isothermal aging times to rationalize intergranular corrosion (IGC) characteristics. In the underaged condition, the dominant grain boundary precipitates are fine T1 (Al2CuLi). Extended aging revealed that grain boundaries were decorated by large T1 precipitates and S′ phase (Al2CuMg), with S′ growth not dimensionally constrained. Such a transition in the precipitate type at grain boundaries is a unique feature of the Al-Cu-Li system.
UR - http://www.scopus.com/inward/record.url?scp=84994219992&partnerID=8YFLogxK
U2 - 10.1007/s11661-016-3848-1
DO - 10.1007/s11661-016-3848-1
M3 - Article
SN - 1073-5623
VL - 48
SP - 51
EP - 56
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 1
ER -