TY - JOUR
T1 - Microstructure evolution of Mg-Zn-Zr magnesium alloy against soft steel core projectile
AU - Malik, Abdul
AU - Wang, Yangwei
AU - Huanwu, Cheng
AU - Nazeer, Faisal
AU - Khan, Muhammad Abubaker
N1 - Publisher Copyright:
© 2020
PY - 2021/7/20
Y1 - 2021/7/20
N2 - The study aimed to shed light on the post deformation and damage behavior of an extruded Mg-Zn-Zr alloy under a ballistic impact. The results revealed that the initial microstructure consisted of both 0001 basal and 101̄0 prismatic fiber texture. After impact, adiabatic shear bands, pronounce different twinning in big grains, , , and types of dislocations, and grain refinement through twinning induce recrystallization accommodated the strain, and absorbed ∼65.7 % of the energy during impact carried by a soft steel projectile. Interestingly, the deformation behavior at the top broad sides of the crater was entirely different. The weak basal texture was changed to a strong prismatic texture, which was further proved by typical sigmoidal compressive stress-strain curves. A revised model for the development of the ultra-fine grains adjacent to the crater has been proposed. The microhardness and yield strength was ∼33 % and ∼40 % higher and chiefly ascribed to strain hardening in ultra-fine grained near the surface of the perforation path. The exit of the perforation path was severely damaged and forms onion-shaped concentric rings which were comprised of melted zones, dimples, and cracks. Based on the all interesting findings, this study can be a clue for the development of the lightweight Mg alloy for military and aerospace applications.
AB - The study aimed to shed light on the post deformation and damage behavior of an extruded Mg-Zn-Zr alloy under a ballistic impact. The results revealed that the initial microstructure consisted of both 0001 basal and 101̄0 prismatic fiber texture. After impact, adiabatic shear bands, pronounce different twinning in big grains, , , and types of dislocations, and grain refinement through twinning induce recrystallization accommodated the strain, and absorbed ∼65.7 % of the energy during impact carried by a soft steel projectile. Interestingly, the deformation behavior at the top broad sides of the crater was entirely different. The weak basal texture was changed to a strong prismatic texture, which was further proved by typical sigmoidal compressive stress-strain curves. A revised model for the development of the ultra-fine grains adjacent to the crater has been proposed. The microhardness and yield strength was ∼33 % and ∼40 % higher and chiefly ascribed to strain hardening in ultra-fine grained near the surface of the perforation path. The exit of the perforation path was severely damaged and forms onion-shaped concentric rings which were comprised of melted zones, dimples, and cracks. Based on the all interesting findings, this study can be a clue for the development of the lightweight Mg alloy for military and aerospace applications.
KW - Ballistic impact
KW - CDRX
KW - Mg alloy
KW - Soft steel core
KW - Texture
KW - Twin induce rotational dynamic recrystallization
UR - http://www.scopus.com/inward/record.url?scp=85098181531&partnerID=8YFLogxK
U2 - 10.1016/j.jmst.2020.10.074
DO - 10.1016/j.jmst.2020.10.074
M3 - Article
AN - SCOPUS:85098181531
SN - 1005-0302
VL - 79
SP - 46
EP - 61
JO - Journal of Materials Science and Technology
JF - Journal of Materials Science and Technology
ER -