Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 724, Issue -, Pages 529-535Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2018.03.116
Keywords
TiB2; Mg alloys; LPSO; Doping; Mechanical performance
Categories
Funding
- Shanxi key laboratory of advanced magnesium-based material
- National Natural Science Foundation of China [51474153, 51574175]
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The effect of TiB2 doping on the microstructure and mechanical properties of the Mg94.4Zn2.5Y2.5Mn0.6 alloy was investigated in this study, which shown that the volume fraction of long-period stacking ordered (LPSO) structures was significantly increased and the LPSO/W interface shown anisotropy with TiB2 doping to the Mg94.4Zn2.5Y2.5 Mn-0.6 alloy. When the doping amount of TiB2 was 0.006 wt%, the Mg94.4Zn2.5Y2.5Mn0.6 alloy appeared uniform equiaxed dendrites and the volume fraction of the LPSO phase was 3.65 times higher than of the TiB2-free alloy. Meanwhile, Mg94.4Zn2.5Y2.5Mn0.6 alloy with 0.006 wt% TiB2-doping shown optimal mechanical performance with ultimate tensile strength and elongation of 240 MPa and 13.5%, respectively.
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