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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Study of coherence strain of GP II zones in an aged aluminum composite
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Study of coherence strain of GP II zones in an aged aluminum composite

机译：时效铝复合材料中GP II区的相干应变研究

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摘要

Strain mapping using the geometric phase analysis (GPA) technique was applied to Al-GP II (Guinier-Preston) nanoscale precipitates, using both high resolution transmission electron microscopy (HRTEM) micrographs as well as the exit wave function (EWF) obtained by focal series reconstruction. The experimental strain results were compared with strain maps obtained from an atomic model which consisted of an Al supercell containing a GP II precipitate. It was built as a reference from literature data. The experimental results demonstrate a complex strain distribution and larger fluctuations than the reference strain maps. These differences were found to be partly a consequence of image artifacts produced by the technique as well as complex microstructural events which were present at the development stage studied.
机译：使用高分辨率透射电子显微镜（HRTEM）显微照片以及通过聚焦获得的出射波函数（EWF），将使用几何相位分析（GPA）技术的应变映射应用于Al-GP II（Guinier-Preston）纳米级沉淀物系列重建。将实验应变结果与从原子模型获得的应变图进行比较，该原子模型由包含GP II沉淀物的Al超级电池组成。它是作为文献数据的参考而建立的。实验结果表明，与参考应变图相比，应变分布复杂且波动较大。发现这些差异部分是由于该技术产生的图像伪像以及研究的开发阶段中存在的复杂的微观结构事件的结果。

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