Preparation and Mechanical Property of Mg-Zn-Y Alloy with a Long Period Ordered Phase

Takaomi Itoi; Yasuki Kuroda; Yoshihito Kawamura; Mitsuji Hirohashi

doi:10.4028/www.scientific.net/MSF.654-656.619

Paper Titles

Building Capability through Benchmarking and Technology Transfer
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Temperature Dependence of Compressive Deformation Behavior of Mg₈₉Zn₄Y₇ Extruded LPSO-Phase Alloys
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Thermal Stability and Mechanical Properties of Extruded Mg-Zn-Y Alloys with Long-Period Stacking Order Phase
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Multimodal Microstructure Evolution in Wrought Mg-Zn-Y Alloys with High Strength and Increased Ductility
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Preparation and Mechanical Property of Mg-Zn-Y Alloy with a Long Period Ordered Phase
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Formation of a Novel X Phase in Mg–Gd–Zn–Zr Alloy
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TEM Observation of Precipitates in a Mg-Gd-Sc Alloy with High Content of Sc
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Effect of Sc Addition on Aging Behavior of Mg-Gd Alloys
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Effect of Minor Additions of Al and Si on the Mechanical Properties of Cast Mg-3Sn-2Ca Alloys in Low Temperature Range
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HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Preparation and Mechanical Property of Mg-Zn-Y...

Preparation and Mechanical Property of Mg-Zn-Y Alloy with a Long Period Ordered Phase

Abstract:

The composition dependence of yield strength and elongation of the Mg-Zn-Y ternary alloy system were investigated. Yield strength was found to increase with the increasing Zn and Y contents, while elongation decreased in Zn- and Y- rich- regions in the system. The composition ratio of Zn to Y, both of which shows large elongation and comparatively high yield strength, was 1:1 in the Mg-rich region of the alloy system. Mg98Zn1Y1, Mg96Zn2Y2, and Mg94Zn3Y3 (at.%) cast alloys exhibited yield strength of 107, 129, and 173 MPa, and elongations of 17, 8, and 12 %, respectively. These alloys consist of Mg-, LPO-, and Mg3Zn3Y2- phases. We also prepared Mg-Zn-Y alloy sheets by hot rolling using cast alloys, and we investigated their microstructure and mechanical properties. The Mg98Zn1Y1, Mg96Zn2Y2, and Mg94Zn3Y3, alloy sheets exhibited yield strength of 276, 319, and 379 MPa, and elongations of 12, 11, and 8 %, respectively. After annealing at 673 K for 3 h, large elongations above 20 % were achieved both of the Mg98Zn1Y1 and Mg96Zn2Y2 alloy sheets.