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Jiang, J.Z., Kato, H., Ohsuna, T., Saida, J., Inoue, A., et al. (2003) Origin of nondetectable x-ray diffraction peaks in nanocomposite CuTiZr alloys. Applied Physics Letters, 83, 3299-3301.

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• 标题: 纳米晶对CuZr基非晶合金变形行为的影响The Effect of Nanocrystals on the Plastic Deformation Ability of CuZr-Based BMG

  作者: 张临财, 宋振亚, 郭啸栋, 侯彦华

  关键字: 纳米晶, 自由体积, 变形行为, 断口形貌Nanocrystals, Free Volume, Mechanical Behaviors, Fracture Morphology

  期刊名称: 《Material Sciences》, Vol.4 No.6, 2014-11-25

  摘要: 本文制备了较大尺寸的CuZr基完全非晶合金以及含有原位析出纳米晶组织的非晶复合材料，在排除试样几何尺寸影响的基础上，研究了上述两种材料在压缩加载下的变形行为，证实了原位析出纳米晶对CuZr基非晶合金的塑性变形能力具有重要作用。同时提出了自由体积和细小纳米晶的共同存在可以有效的提高非晶合金的塑性变形能力，为从非晶合金中制备具有良好塑性的纳米晶非晶复合材料的韧化提供了思路。The CuZr-based fully amorphous alloy and composites containing in-situ nanocrystals with large size were prepared. Without the influence of specimen geometry, their mechanical behaviors under compression were systematically studied and compared, confirming the important role of in- situ nanocrystals on the plastic deformation ability. At the same time, the coexistence of free volume and small nanocrystals can efficiently enhance the plastic deformation ability, providing a useful guideline for large plasticity in BMG composites with nanocrystalline prepared from fully amorphous alloy.