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arXiv 1909.09388cond-mat.mtrl-scihep-ex
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同步辐射X射线断层扫描和电子显微镜对Al-Sc合金中初生Al3Sc相的三维表征

3D characterization of the primary Al3Sc phases in an Al-Sc alloy using Synchrotron X-ray tomography and electron microscopy

Yuliang Zhao, Weiwen Zhang, Billy Koe, Wenjia Du, Mengmeng Wang, Weilin Wang, Elodie Boller, Alexander Rack, Zhenzhong Sun, Jiawei Mi

摘要:

用同步辐射X射线显微层析、扫描电镜和透射电镜研究了Al-2Sc中间合金中初生Al 3Sc颗粒的三维结构。Al 3Sc相被发现是一个单一的立方体和立方体的集群。随着Al_3Sc立方体体积的增加,其比表面积、当量直径增大,比表面积减小。初生Al_3Sc立方相与Al基体具有相同的晶体取向,表明Al_3Sc相是Al的异质形核中心,实验结果表明α-Al_2O_3是Al_3Sc立方相的可能形核中心。

英文摘要:

The three-dimensional structures of the primary Al3Sc particles in an Al-2Sc master alloy were studied by synchrotron X-ray microtomography, scanning and transmission electron microscopy. The Al3Sc phases were found to be a single cube and a cluster of cubes. The surface area, equivalent diameter of the Al3Sc cubes increased with the increasing of cube volume, but the specific surface area decreases. The primary Al3Sc cubes and Al-matrix have the same crystal orientation, indicating that the Al3Sc phases are the heterogeneous nucleation sites for Al. The experimental results show that α-Al2O3 are the possible nucleation sites for the Al3Sc cubes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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