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Effects of porosity and pore size on the compressive properties of closed-cell Mg alloy foam

Journal of Magnesium and Alloys 2013年第4期1卷 330-335页

作者： X.C.Xia X.W.Chen Z.Zhang X.Chen W.M.Zhao B.Liao B.Hur School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China School of Nano’Advanced Materials Science and Engineering Gyeongsang National University of South KoreaSouth Korea

In our current work,AZ31 magnesium alloy foams with closed-cell were successfully fabricated by melt foaming method using Ca and CaCO3 as thickening and blowing agent,*** influences of porosity and pore size on the quasi-static compressive properties of the foams were systematically *** results showed that the yield strength,energy absorption capacity and ideality energy absorption efficiency were decreased with the increase in ***,specimens with porosities of 60%,65%and 70%possessed similar total energy absorption capacity and ideality energy absorption ***,experimental results showed that mean plateau strength of the foams was increased first and then decreased with increase in mean pore *** addition,energy absorption capacities were almost the same in the initial stage,while the differences were obvious in the middle *** the engineering point of view,the specimens with mean pore size of 1.5 mm possess good combination of mean plateau strength and energy absorption characteristics under the present conditions.

关键词： Metal foam melt forming method Mg alloy foam Compressive property

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