|MICROSTRUCTURE AND ROOM TEMPERATURE COMPRESSION PROPERTIES OF Mg82.13Zn13.85Y4.02 ALLOY SOLIDIFIED UNDER SUPER-HIGH PRESSURE|
|Alternative Title||MICROSTRUCTURE AND ROOM TEMPERATURE COMPRESSION PROPERTIES OF Mg_(82.13)Zn_(13.85)Y_(4.02) ALLOY SOLIDIFIED UNDER SUPER-HIGH PRESSURE
|Dong Yun1; Lin Xiaoping1; Xu Rui2; Fan Zhibin1; Ye Jie1; Wang Zhe2
|Source Publication||ACTA METALLURGICA SINICA
|Abstract||By the investigation of the microstructures of Mg82.13Zn13.85Y4.02 (mass fraction, %) alloy solidified under different pressure, it is found that the solidification microstructure of the alloy is consisted of alpha-Mg matrix, W-Mg3Y2Zn3 phase and I-Mg3YZn6 phase. In the microstructure of the alloy solidified under ambient pressure, the networks of the secondary phases of eutectic-like and rod-like shape are distributed in the alpha-Mg interdendritic space. As the solidification pressure increases, eutectic network is disconnected gradually and the amount of eutectic is diminished and the solubility of Zn in alpha-Mg rises gradually. The results of the measurement of the mechanical properties show that the compression strength, the yield strength and the compressibility of the alloy sample solidified under ambient pressure is 344 MPa, 331 MPa and 16% respectively. However, the compression strength, the yield strength and the compressibility of the alloy sample solidified from 1250 degrees C under 6 GPa is 455 MPa, 426 MPa and 25%, respectively. The observation of fracture surfaces shows that, in the alloy solidified under high pressure, the cleavage surface of the compressed fracture is decreased, and the tear ridge and tearing dimple can be found. The degree of cleavage fracture is decreased.|
high pressure solidification
|Funding Project||[Natural Science Foundation of Hebei Province]
; [Natural Science Foundation of Liaoning Province]
; [Projiect of Science and Technology of Northeastern University at Qinhuangdao]
2.Yanshan Univ, State Key Lab Metastable Materials Sci & Technol, Sch Materials Sci & Engn, Qinhuangdao 066004, Peoples R China
Dong Yun,Lin Xiaoping,Xu Rui,et al. MICROSTRUCTURE AND ROOM TEMPERATURE COMPRESSION PROPERTIES OF Mg82.13Zn13.85Y4.02 ALLOY SOLIDIFIED UNDER SUPER-HIGH PRESSURE[J]. ACTA METALLURGICA SINICA,2014,50(5):594-600.
Dong Yun,Lin Xiaoping,Xu Rui,Fan Zhibin,Ye Jie,&Wang Zhe.(2014).MICROSTRUCTURE AND ROOM TEMPERATURE COMPRESSION PROPERTIES OF Mg82.13Zn13.85Y4.02 ALLOY SOLIDIFIED UNDER SUPER-HIGH PRESSURE.ACTA METALLURGICA SINICA,50(5),594-600.
Dong Yun,et al."MICROSTRUCTURE AND ROOM TEMPERATURE COMPRESSION PROPERTIES OF Mg82.13Zn13.85Y4.02 ALLOY SOLIDIFIED UNDER SUPER-HIGH PRESSURE".ACTA METALLURGICA SINICA 50.5(2014):594-600.
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