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Effect of Warm Equal-Channel Angular Pressing on the Structure and Mechanical Properties of Al–Mg–Ca–Mn–Fe–Zr Alloy
Physics of Metals and Metallography ( IF 1.1 ) Pub Date : 2021-04-13 , DOI: 10.1134/s0031918x21010105
S. O. Rogachev , E. A. Naumova , R. D. Karelin , V. A. Andreev , M. M. Perkas , V. S. Yusupov , V. M. Khatkevich

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 BC, 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:

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。

更新日期:2021-04-13
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