Abstract
Influences of Sn and Y on the microstructure,mechanical properties,and corrosion behavior of as-cast Mg-5Li-3Al-2Zn (LAZ532) alloy were investigated.The addition of Sn and Y refines grains and results in the formation of Mg2Sn and Al2Y phases,thus improving the mechanical properties of alloy by second phase strengthening and grain refinement strengthening.As-cast LAZ532 alloy shows typical filiform corrosion morphology,and the addition of Sn and Y does not change the corrosion mode of alloy.Ascast LAZ532-0.8Sn-1.2Y alloy shows excellent mechanical properties with yield strength of 166.2 MPa,ultimate tensile strength of 228.6 MPa and elongation of 14.8 ％,and exhibits the best corrosion resistance with the smallest corrosion current density and the lowest anodic dissolution rate.
基金项目
This work was financially supported by the National Natural Science Foundation of China(51771115)
This work was financially supported by the National Natural Science Foundation of China(51775334)
This work was financially supported by the National Natural Science Foundation of China(51821001)
Joint Fund for Space Science and Technology(6141B06310106)
National Defense Science and Technology Innovation Special Zone Project(002-002-01)
NETL
NSTL
万方数据