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Influence of Hydrostatic Extrusion on the Mechanical Properties of the Model Al-Mg Alloys

机译:静压挤出对模型Al-Mg合金机械性能的影响

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摘要

Two model aluminium-magnesium alloys, containing 3 and 7.5 wt.% of Mg, were subjected to plastic deformation by means of hydrostatic extrusion (HE). Two degrees of deformation were imposed by two subsequent reductions of the diameter. Microstructural analysis and tensile tests of the materials in the initial state and after deformation were performed. For both materials, HE extrusion resulted in the deformation of the microstructure-formation of the un-equilibrium grain boundaries and partition of the grains. What is more, HE resulted in a significant increase of tensile strength and decrease of the elongation, mostly after the first degree of deformation.
机译:通过静水压挤压(HE),对两种模型铝镁合金(含3%和7.5%重量的镁)进行了塑性变形。直径随后两次减小,造成了两个程度的变形。对材料在初始状态和变形后进行了微观结构分析和拉伸试验。对于这两种材料,HE挤压导致了非平衡晶界的微观结构变形和晶粒的分配。更重要的是,他导致了拉伸强度的显著增加和延伸率的降低,主要是在一级变形之后。

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