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Microstructural evolution of iron based metal-matrix composites submitted to simple shear

机译:经受简单剪切的铁基金属基复合材料的微观结构演变

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摘要

New Fe-based metal matrix composites reinforced by around 11 vol%. TiB_2 ceramic particles have been characterized before and after planar simple shear tests up to 50% plastic shear strain. The morphology and the crystallographic texture of the particles have been studied by SEM-EBSD. Hardening behavior and damage development were compared for fine or coarse matrix grain size. Good ductility of the composite was observed at the macroscopic scale in both cases. Local damage by particle fracture was evidenced and quantified thanks to image processing. Effect of matrix strengthening and of particle size on damage was discussed.
机译:新的铁基金属基复合材料增强了约11%(体积)。在平面简单剪切试验之前和之后,已对TiB_2陶瓷颗粒进行了表征,塑性剪切应变高达50%。通过SEM-EBSD研究了颗粒的形态和晶体学织构。比较了细晶粒或粗晶粒尺寸的硬化行为和损伤发展。在两种情况下,在宏观尺度上都观察到复合材料的良好延展性。由于图像处理,可以证明并量化了由颗粒断裂引起的局部损坏。讨论了基体强化和粒径对损伤的影响。

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  • 来源
    《Materials Science and Engineering》 |2014年第20期|123-131|共9页
  • 作者单位

    Universite Paris 13, Sorbonne Paris Cite, Laboratoire des Sciences des Procedes et des Materiaux (LSPM), CNRS(UPR3407), 99 av. J.B. Clement, F-93430 Villetaneuse, France;

    Universite Paris 13, Sorbonne Paris Cite, Laboratoire des Sciences des Procedes et des Materiaux (LSPM), CNRS(UPR3407), 99 av. J.B. Clement, F-93430 Villetaneuse, France;

    ArcelorMittal, Voie Romaine BP 30320, F-57283 Maizieres-les-Metz Cedex, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Electron microscopy; EBSD; Composites; Mechanical characterization; Hardening; Fracture;

    机译:电子显微镜;EBSD;复合材料;机械特性硬化;断裂;

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