TY - JOUR
T1 - Simultaneously enhancing strength, ductility, and stiffness of lightweight multicomponent Mg-Al-Zn-Cu-Ce alloys
AU - Gu, Zuo-hong
AU - Zhou, Yun-xuan
AU - Peng, Jia-xing
AU - He, Guang-ming
AU - Lv, Hao
AU - Dong, Quan
AU - Tan, Jun
AU - Chen, Xian-hua
AU - Jiang, Bin
AU - Pan, Fu-sheng
AU - Eckert, Jürgen
N1 - Publisher Copyright: © 2025 The Nonferrous Metals Society of China
PY - 2025/10/25
Y1 - 2025/10/25
N2 - To obtain lightweight multicomponent magnesium alloys with high tensile strength, ductility, and stiffness, two extruded Mg 92-5xAl 1.5+3xZn 3Cu 3.5+xCe x (x=0.5 and 1, labeled as C0.5 and C1) alloys were designed. The results reveal that the ultimate tensile strength, yield strength (YS), and fracture strain of the C0.5 alloy are simultaneously improved compared to those of the C1 alloy, with values of 346 MPa, 312 MPa, and 11.7%, respectively. This enhancement is primarily attributed to the refinement of numerous secondary phases (micron scale Al 3CuCe, micron scale MgZnCu, and nanoscale MgZnCu phases). The calculation of YS shows that the Orowan strengthening and coefficient of thermal expansion mismatch strengthening are the main strengthening mechanisms, and the contribution values of both to the YS are 28 and 70 MPa for C0.5 alloy. In addition, the C0.5 alloy has a greater plasticity than the C1 alloy because the 〈c+a〉 slip system is initiated.
AB - To obtain lightweight multicomponent magnesium alloys with high tensile strength, ductility, and stiffness, two extruded Mg 92-5xAl 1.5+3xZn 3Cu 3.5+xCe x (x=0.5 and 1, labeled as C0.5 and C1) alloys were designed. The results reveal that the ultimate tensile strength, yield strength (YS), and fracture strain of the C0.5 alloy are simultaneously improved compared to those of the C1 alloy, with values of 346 MPa, 312 MPa, and 11.7%, respectively. This enhancement is primarily attributed to the refinement of numerous secondary phases (micron scale Al 3CuCe, micron scale MgZnCu, and nanoscale MgZnCu phases). The calculation of YS shows that the Orowan strengthening and coefficient of thermal expansion mismatch strengthening are the main strengthening mechanisms, and the contribution values of both to the YS are 28 and 70 MPa for C0.5 alloy. In addition, the C0.5 alloy has a greater plasticity than the C1 alloy because the 〈c+a〉 slip system is initiated.
KW - Al CuCe phase
KW - mechanical properties
KW - Mg-Al-Zn-Cu- Ce alloy
KW - plastic deformation mechanism
KW - strengthening mechanism
UR - https://www.scopus.com/pages/publications/105019749785
U2 - 10.1016/S1003-6326(25)66878-6
DO - 10.1016/S1003-6326(25)66878-6
M3 - Article
SN - 1003-6326
VL - 2025
SP - 3240
EP - 3255
JO - Transactions of Nonferrous Metals Society of China (English Edition)
JF - Transactions of Nonferrous Metals Society of China (English Edition)
IS - Volume 35, Issue 10
ER -