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The influence of equal channel angular pressing on the tension-compression yield asymmetry of extruded Mg-5.3 Zn-0.6 Ca (weight percent) alloy has been investigated. The microstructure was obviously refined by the large strain during the equal channel angular pressing, accompanied with very fine Ca2Mg6Zn3 phases with average diameter of 70 nm. The weak tension-compression yield asymmetry after equal channel angular pressing is mainly attributed to the reduced volume fraction of extensiondoi:10.1016/j.jma.2015.08.007 fatcat:jqr6sy4syrc4dpu54tppcaeeny