首页> 外文会议>Proceedings of the 3rd Pan American materials congress >Continuous Dynamic Recovery in Pure Aluminium Deformed to High Strain by Accumulative Press Bonding
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Continuous Dynamic Recovery in Pure Aluminium Deformed to High Strain by Accumulative Press Bonding

机译:通过累积压接技术连续动态恢复变形为高应变的纯铝

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Microstructural evolutions of AA1050 aluminium alloy, prepared by accumulative press bonding, have been investigated by means of sophisticated analytical tools, including STEM and EBSD. The results revealed that continuous dynamic recovery was dominant mechanism in grain refinement, and resulted in formation of nano/ultrafine grains with average diameter of 450 nm in pressing direction and 320 nm in transverse direction. By increasing strain during APB process, the mean misorientation angle and the fraction of high angle boundaries increased and reached a saturation value of ~35° and ~78%, respectively.
机译:已经通过包括STEM和EBSD在内的复杂分析工具研究了通过累积压接制备的AA1050铝合金的微观组织演变。结果表明,连续动态恢复是晶粒细化的主要机理,并导致形成纳米/超细晶粒,其压制方向平均直径为450 nm,横向平均直径为320 nm。随着APB过程中应变的增加,平均取向角和高角度边界的比例增加,分别达到〜35°和〜78%的饱和度。

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