Zhang Wei, Bodey Andrew J, Sui Tan, Kockelmann Winfried, Rau Christoph, Korsunsky Alexander M, Mi Jiawei
School of Engineering, University of Hull, Hull, HU6 7RX, East Yorkshire, UK.
Diamond Light Source, Oxfordshire, OX11 0DE, UK.
Sci Rep. 2016 Jan 4;6:18545. doi: 10.1038/srep18545.
Bulk metallic glass matrix composites (BMGMCs) are a new class of metal alloys which have significantly increased ductility and impact toughness, resulting from the ductile crystalline phases distributed uniformly within the amorphous matrix. However, the 3D structures and their morphologies of such composite at nano and micrometre scale have never been reported before. We have used high density electric currents to thermally shock a Zr-Ti based BMGMC to different temperatures, and used X-ray microtomography, FIB-SEM nanotomography and neutron diffraction to reveal the morphologies, compositions, volume fractions and thermal stabilities of the nano and microstructures. Understanding of these is essential for optimizing the design of BMGMCs and developing viable manufacturing methods.
大块金属玻璃基复合材料（BMGMCs）是一类新型金属合金，由于韧性结晶相均匀分布在非晶基体中，其延展性和冲击韧性显著提高。然而，此前从未有过关于此类复合材料在纳米和微米尺度的三维结构及其形态的报道。我们利用高密度电流对一种锆钛基BMGMC进行热冲击至不同温度，并使用X射线显微断层扫描、聚焦离子束扫描电子显微镜纳米断层扫描和中子衍射来揭示纳米和微观结构的形态、成分、体积分数和热稳定性。了解这些对于优化BMGMCs的设计和开发可行的制造方法至关重要。
