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不同制备方法而具有相同组织的Mg-10Y中间合金具有明显不同的变质效果和遗传效应。结果表明:常规铸态、挤压态、热处理态和快速凝固态Mg-10Y中间合金组织和晶粒尺寸存在差异。Mg-10Y中间合金作为变质剂加入到AZ31中具有明显的细化效果。最终镁合金组织均由α-Mg,Mg17Al12,Al2Y和Al3Y相组成。添加挤压态Mg-10Y中间合金的AZ31镁合金机械性能达到最优,抗拉强度和延伸率分别为199.3 MPa和9.2%。Mg-10Y中间合金与所对应的镁合金存在相似的组织形态,这种结构和机械性能的相关性与Mg-10Y中间合金的结构遗传有关。
Mg-10Y master alloys with the same structure with different preparation methods have obviously different metamorphic effects and genetic effects. The results show that the microstructure and grain size of Mg-10Y master alloy in conventional as-cast, as-extruded, as-heat treated and rapidly solidified Mg-10Y master alloys are different. Mg-10Y master alloy as a modifier added to the AZ31 has a significant refining effect. The final magnesium alloy by α-Mg, Mg17Al12, Al2Y and Al3Y phase composition. The mechanical properties of AZ31 magnesium alloy with addition of extruded Mg-10Y master alloy were optimized, and the tensile strength and elongation were 199.3 MPa and 9.2% respectively. Mg-10Y master alloy and the corresponding magnesium alloy similar to the existence of the organization, the structure and mechanical properties of the correlation with the Mg-10Y master alloy structural inheritance.