Application of synchrotron x-ray microtomography to investigate ductile fracture in Al alloys
Application of synchrotron x-ray microtomography to investigate ductile fracture in Al alloys
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DOI：
10.1063/1.2142081
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发表时间：
2005-12
影响因子：
4
通讯作者：
L. Qian;H. Toda;K. Uesugi;Toshiro Kobayashi;T. Ohgaki;M. Kobayashi
中科院分区：
文献类型：
--
作者：
L. Qian;H. Toda;K. Uesugi;Toshiro Kobayashi;T. Ohgaki;M. Kobayashi
原位高分辨率同步辐射X射线计算机显微断层扫描已被应用于可视化和量化的缺口铝合金试样的韧性断裂过程。三维（3D）的调查表明，空洞的形核，增长和合并更容易在缺口前端和样品的中心区域。这些空隙主要与共晶（EU）相中的Si颗粒有关。研究了EU区颗粒的三维堆积结构和α相的三维形貌。该技术的可行性突出了其在基于细观力学的断裂领域的应用潜力。
The in situ high-resolution synchrotron x-ray computed microtomography has been applied to visualize and quantify the ductile fracture process of a notched Al alloy specimen. The three-dimensional (3D) investigation reveals that voids are nucleated, grow and coalesce more easily near the notch front and in the central region of the sample. These voids are mainly associated with Si particles in the eutectic (EU) phase. The 3D packing architecture of particles in the EU region, and the 3D morphology of α phase are also visualized. The feasibility of this technique highlights the potential of its application in the field of micromechanics-based fracture.