首页|Compressive property and energy absorption characteristic of interconnected porous Mg-Zn-Y alloys with adjusting Y addition
Compressive property and energy absorption characteristic of interconnected porous Mg-Zn-Y alloys with adjusting Y addition
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维普
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In this study,interconnected porous Mg-2Zn-xY alloys with different phase compositions were prepared by various Y additions(x=0.4％,3.0％,and 6.0％,in mass fraction)to adjust the compressive properties and energy absorption characteristics.Several characterization methods were then applied to identify the microstructure of the porous Mg-Zn-Y and describe the details of the second phase.Compressive tests were performed at room temperature(RT),200 ℃,and 300 ℃ to study the impact of the Y addition and testing temperature on the compressive prop-erties of the porous Mg-Zn-Y.The experimental results showed that a high Y content promotes a microstructure refinement and increases the volume fraction of the second phase.When the Y content increases,different Mg-Zn-Y ternary phases appear:Ⅰ-phase(Mg3Zn6Y),W-phase(Mg3Zn3Y2),and LPSO phase(Mg12ZnY).When the Y content ranges between 0.4％and 6％,the compressive strength increases from 6.30 MPa to 9.23 MPa,and the energy absorption capacity increases from 7.33 MJ·m-3 to 10.97 MJ·m-3 at RT,which is mainly attributed to the phase composition and volume fraction of the second phase.However,the average energy absorption efficiency is independent of the Y content.In addition,the compressive deformation behaviors of the porous Mg-Zn-Y are altered by the testing temperature.The compressive strength and energy absorption capacity of the porous Mg-Zn-Y decrease due to the softening effect of the high temperature on the struts.
维普
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