Variation of Microstructure and Mechanical Properties of ZW61 Magnesium Alloy Solidified under Different Pressures

Shu Sen Wu; Xiao Gang Fang; Shu Lin Lü; Long Fei Liu; Wei Guo

doi:10.4028/www.scientific.net/SSP.327.3

Paper Titles

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Variation of Microstructure and Mechanical Properties of ZW61 Magnesium Alloy Solidified under Different Pressures
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HomeSolid State PhenomenaSolid State Phenomena Vol. 327Variation of Microstructure and Mechanical...

Variation of Microstructure and Mechanical Properties of ZW61 Magnesium Alloy Solidified under Different Pressures

Abstract:

There is little datum related to microstructure and properties of Mg alloys squeeze-casted with pressure over 200 MPa. In this study, the microstructure and properties of Mg-6Zn-1.4Y (ZW61) alloy solidified under 100MPa to 800MPa were investigated. The results show that a remarkable microstructure refinement and porosity reduction can be reached through solidification under high pressure. The average grain size and the volume fraction of second phase, i.e. quasicrystal I-phase, decrease continuously with the increase of applied pressure. The tensile properties, especially elongation, are obvious enhanced because of the microstructure refinement and castings densification under high pressure. The ultimate tensile strength and elongation of ZW61 alloy in as-cast state are 243 MPa and 18.7% when the applied pressure is 800 MPa, which are increased by 35% and 118% respectively, compared with that of the gravity castings.

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Periodical:

Solid State Phenomena (Volume 327)

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3-10

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https://doi.org/10.4028/www.scientific.net/SSP.327.3

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Online since:

January 2022

Authors:

Shu Sen Wu*, Xiao Gang Fang, Shu Lin Lü, Long Fei Liu, Wei Guo

Keywords:

High Pressure, Mechanical Properties, Mg-Zn-Y Alloy, Microstructure, Squeeze Casting

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