TY - JOUR
T1 - Effect of SPD Processing on the Strength and Conductivity of AA6061 Alloy
AU - Qi, Yuanshen
AU - Kosinova, Anna
AU - Lakin, Eugene
AU - Popov, Vladimir V.
AU - Rabkin, Eugen
AU - Lapovok, Rimma
N1 - Publisher Copyright:
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2019/8
Y1 - 2019/8
N2 - The extruded and artificially aged at 177 °C high strength commercial alloy AA6061-T651 is subjected to severe plastic deformation (SPD) by cyclic extrusion up to 1000% of the true strain at 400 °C. Unexpectedly, the electrical conductivity of the deformed alloy increased by 10% International Annealed Copper Standard (IACS), while the hardness dropped by only 40 HV. Further, it is shown that low temperature aging at 130 °C after SPD results in the following phenomena: the hardness of the alloy is restored almost to the initial level, with a slight decrease in conductivity, which still remained higher than in the original state. All microstructural parameters of the alloy including aluminum matrix composition, grain size, grain boundaries fraction, and morphology of the precipitates are characterized and correlated with the observed effect of SPD on the strength and electrical conductivity of alloy AA6061.
AB - The extruded and artificially aged at 177 °C high strength commercial alloy AA6061-T651 is subjected to severe plastic deformation (SPD) by cyclic extrusion up to 1000% of the true strain at 400 °C. Unexpectedly, the electrical conductivity of the deformed alloy increased by 10% International Annealed Copper Standard (IACS), while the hardness dropped by only 40 HV. Further, it is shown that low temperature aging at 130 °C after SPD results in the following phenomena: the hardness of the alloy is restored almost to the initial level, with a slight decrease in conductivity, which still remained higher than in the original state. All microstructural parameters of the alloy including aluminum matrix composition, grain size, grain boundaries fraction, and morphology of the precipitates are characterized and correlated with the observed effect of SPD on the strength and electrical conductivity of alloy AA6061.
KW - aging
KW - aluminum alloy AA6061
KW - mechanical and electrical properties
KW - severe plastic deformation
UR - http://www.scopus.com/inward/record.url?scp=85064767096&partnerID=8YFLogxK
U2 - 10.1002/adem.201801370
DO - 10.1002/adem.201801370
M3 - 文章
AN - SCOPUS:85064767096
SN - 1438-1656
VL - 21
JO - Advanced Engineering Materials
JF - Advanced Engineering Materials
IS - 8
M1 - 1801370
ER -