Abstract—

The effect of equal-channel angular pressing on the structure, mechanical properties, and thermal stability of the Al–5% Mg–1% Ca–0.9% Mn–0.5% Fe–0.1% Zr alloy has been studied. Samples in the annealed state have been subjected to ECAP under the following conditions: by route B_C, at a temperature of 400°C, an angle of channel intersection of 110°, and the number of passes of N = 8. ECAP results in (i) the formation of a substructure with a high dislocation density and (ii) the precipitation of Al₆(Mn, Fe) and Al₃Zr nanoparticles in the alloy. ECAP increases both strength and plasticity of the alloy. The strength of the alloy after ECAP increases by a factor of 1.3–1.5 and the relative elongation, by a factor of 2.0–2.5 in comparison with the initial state.

中文翻译：

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等温弯角挤压对Al–Mg–Ca–Mn–Fe–Zr合金组织和力学性能的影响

摘要-

研究了等通道角挤压对Al–5％Mg–1％Ca–0.9％Mn–0.5％Fe–0.1％Zr合金的组织，力学性能和热稳定性的影响。处于退火状态的样品已在以下条件下进行了ECAP：通过路线B _C，在400°C的温度下，通道交叉角为110°，通过次数为N = 8。 （i）高位错密度的子结构的形成和（ii）Al ₆（Mn，Fe）和Al ₃的析出合金中的Zr纳米粒子。ECAP可提高合金的强度和可塑性。与初始状态相比，ECAP后的合金强度增加了1.3-1.5倍，相对伸长率增加了2.0-2.5倍。