TY - JOUR
T1 - Mechanical properties and microstructural evolution in Al–Cu–Mg–Ag alloy with a CuxMgx/10 content
AU - So, Hyeongsub
AU - Won, Sung Jae
AU - Park, Jihoon
AU - Oh, Soong Ju
AU - Kang, Leeseung
AU - Kim, Kyou Hyun
N1 - Funding Information:
This research was financially supported by the Institute of Civil Military Technology Cooperation , funded by the Defense Acquisition Program Administration and the Ministry of Trade, Industry and Energy of the Korean government, under grant No. UM18206RD2. This study was also partially supported by the R&D program and research facilities from the Korea Institute of Industrial Technology .
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/8
Y1 - 2021/9/8
N2 - In this study, we investigate the effect of CuxMgx/10 (x = 5.0, 5.5, 6.0, 6.8 wt.%) in Al–Cu–Mg-based alloys on the mechanical properties. Of these, the Cu6.0Mg0.60 alloy shows the highest mechanical properties of σUTS = 532 MPa (σy = 504 MPa) and ε = 11.1%. The amount of CuxMgx/10 solutes affects both macroscopic and microscopic microstructures of fabricated alloys. In the macroscopic observation, a higher content of CuxMgx/10 induces the grain size refinement and the formation of large particles in the grain boundaries. For the microscopic investigation using electron microscopies, the formation of θ′ strengthening phase is more accelerated by a higher content of CuxMgx/10 rather than the formation of Ω phase. Furthermore, microscopic structural distortion is significantly induced with a higher content of CuxMgx/10, which affects the tensile properties of the developed alloys.
AB - In this study, we investigate the effect of CuxMgx/10 (x = 5.0, 5.5, 6.0, 6.8 wt.%) in Al–Cu–Mg-based alloys on the mechanical properties. Of these, the Cu6.0Mg0.60 alloy shows the highest mechanical properties of σUTS = 532 MPa (σy = 504 MPa) and ε = 11.1%. The amount of CuxMgx/10 solutes affects both macroscopic and microscopic microstructures of fabricated alloys. In the macroscopic observation, a higher content of CuxMgx/10 induces the grain size refinement and the formation of large particles in the grain boundaries. For the microscopic investigation using electron microscopies, the formation of θ′ strengthening phase is more accelerated by a higher content of CuxMgx/10 rather than the formation of Ω phase. Furthermore, microscopic structural distortion is significantly induced with a higher content of CuxMgx/10, which affects the tensile properties of the developed alloys.
KW - 2xxx series aluminum alloy
KW - Mechanical properties
KW - Microstructural investigation
UR - http://www.scopus.com/inward/record.url?scp=85110724108&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2021.141573
DO - 10.1016/j.msea.2021.141573
M3 - Article
AN - SCOPUS:85110724108
VL - 824
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
M1 - 141573
ER -