TY - JOUR
T1 - Deformation mechanisms and mechanical properties of rolled AZ31 alloy subjected to precompression and subsequent annealing
T2 - Effect of annealing temperature
AU - Kim, Ye Jin
AU - Kim, Hyun Ji
AU - Park, Sung Hyuk
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/5
Y1 - 2024/5
N2 - This study investigates the effect of annealing temperature on the microstructure, deformation behavior, and mechanical properties of a rolled AZ31 alloy having {10–12} twins. To this end, rolled AZ31 samples are precompressed to 6.0% along the rolling direction (RD) to introduce {10–12} twins and then are annealed at 200, 250, and 300 °C for 1 h. The results reveal that as the annealing temperature increases, the grain size of the annealed samples increases and their RD-oriented basal texture is strengthened. In addition, the number of {10–12} twin boundaries gradually decreases and they almost disappear after annealing at 300 °C. Under tension along the RD, the predominant deformation mechanism of the annealed samples changes from detwinning of preexisting twins to {10–12} twinning as the annealing temperature increases. The annealed samples exhibit different tensile strengths and elongations according to the annealing temperature. Particularly, the tensile elongation increases by 56%, from 13.2% to 20.6%, as the annealing temperature increases from 200 to 300 °C. The variations in the mechanical properties of the annealed samples with the annealing temperature are discussed in detail on the basis of their microstructural characteristics and deformation behaviors.
AB - This study investigates the effect of annealing temperature on the microstructure, deformation behavior, and mechanical properties of a rolled AZ31 alloy having {10–12} twins. To this end, rolled AZ31 samples are precompressed to 6.0% along the rolling direction (RD) to introduce {10–12} twins and then are annealed at 200, 250, and 300 °C for 1 h. The results reveal that as the annealing temperature increases, the grain size of the annealed samples increases and their RD-oriented basal texture is strengthened. In addition, the number of {10–12} twin boundaries gradually decreases and they almost disappear after annealing at 300 °C. Under tension along the RD, the predominant deformation mechanism of the annealed samples changes from detwinning of preexisting twins to {10–12} twinning as the annealing temperature increases. The annealed samples exhibit different tensile strengths and elongations according to the annealing temperature. Particularly, the tensile elongation increases by 56%, from 13.2% to 20.6%, as the annealing temperature increases from 200 to 300 °C. The variations in the mechanical properties of the annealed samples with the annealing temperature are discussed in detail on the basis of their microstructural characteristics and deformation behaviors.
KW - Annealing
KW - Detwinning
KW - Mechanical properties
KW - Rolled Mg alloy
KW - Twinning
UR - http://www.scopus.com/inward/record.url?scp=85189760839&partnerID=8YFLogxK
U2 - 10.1016/j.msea.2024.146424
DO - 10.1016/j.msea.2024.146424
M3 - Article
AN - SCOPUS:85189760839
SN - 0921-5093
VL - 899
JO - Materials Science and Engineering: A
JF - Materials Science and Engineering: A
M1 - 146424
ER -