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轧制驱动-ECA大应变纯铝的强化机理

Lu Yudong,Xu Xiaojing,Lu Wenjun,Jiang Ling,Ma Wenhai,Guo Yunfei,Wang Zilu

RARE METAL MATERIALS AND ENGINEERING（2015）

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Abstract
研究了经过轧制驱动等通道转角大应变加工的商业纯铝的强化机理.基于XRD分析和Taylor公式的定量计算说明,轧制驱动ECA大应变CP Al的内部位错密度很低.通过晶体微区取向分析技术(EB SD)对大应变材料内部的小角度界面和大角度界面进行表征,发现材料内部大多数是小角度晶界;基于Hall-Petch关系对大应变纯铝的强化机理进行定量分析,得出其强化主要来自于小角度晶界强化.
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large straining,XRD,EBSD,strengthening mechanism
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