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Ductilization of BMGs by optimization of nanoparticle dispersion

机译:通过优化纳米粒子的分散性来控制BMG

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摘要

In situ optimized heat treatment in high-energy monochromatic beam of synchrotron light was conduced to generate fine nanoparticle dispersions in Zr-based alloys. Effect of embedded nanocrystals on the mechanical properties of our BMG-composites was investigated by compressive testing at room temperature. We found that the newly created nanostructured composites show good strength at high ductility with no work hardening. Based on TEM observations, a new mechanism was proposed which compensates for shear softening. The nanocrystals initially smaller than the elementary shear band were expected to growth in active shear band during deformation.
机译:在同步加速器光的高能单色光束中进行了原位优化热处理,从而在Zr基合金中生成了细小的纳米粒子分散体。通过室温下的压缩试验研究了包埋的纳米晶体对我们BMG复合材料力学性能的影响。我们发现,新创建的纳米结构复合材料在高延展性下显示出良好的强度,并且没有加工硬化。基于透射电镜观察,提出了一种补偿剪切软化的新机理。最初小于基本剪切带的纳米晶体有望在变形过程中在活性剪切带中生长。

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