Gradual softening of Al-Zn alloys during high-pressure torsion

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• 作者：A.A. Mazilkin ; B.B. Straumal ; M.V. Borodachenkova ; R.Z. Valiev ; O.A. Kogtenkova ; B. Baretzky
• 关键词：High-pressure torsion ; Grain structure ; Microhardness
• 刊名：Materials Letters
• 出版年：2012
• 出版时间：1 October, 2012
• 年：2012
• 卷：84
• 期：Complete
• 页码：63-65
• 全文大小：532 K

文摘

Evolution of the microstructure and mechanical properties of Al-30 wt. % Zn alloy after the severe plastic deformation (SPD) by the high-pressure torsion has been investigated in detail in dependence on the increasing deformation degree. SPD leads to the gradual grain refinement and decomposition of the Al-based supersaturated solid solution. Measurements of the microhardness reveal a successive softening of the alloy with the increased deformation degree.