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Effect of iron content on mechanical behavior of nanocrystalline nickel and alloys

机译：铁含量对纳米晶镍及其合金力学行为的影响

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摘要

The effect of iron content on mechanical behavior during room-temperature rolling of nanocrystalline Ni, Ni-20 wt% Fe and Ni-30 wt% Fe are investigated by hardness measurement and microstructure characterization. The mechanical behavior of nc metals indicate a combined effect of crystal defects and grain size. Quantitative X-ray diffraction analysis of microstructure evolution shows that the plastic strain corresponding to saturation of defects is in good agreement with the critical plastic strain corresponding to the transition between strain hardening and strain softening. It is found that the onset of mechanical behavior is dependent on the iron content, and the increase of iron content enhances the crystal defects and grain size effects on the mechanical behavior.
机译：通过硬度测量和显微组织表征研究了铁含量对室温下纳米晶Ni，Ni-20 wt％Fe和Ni-30 wt％Fe的机械性能的影响。 nc金属的机械行为表明晶体缺陷和晶粒尺寸的综合影响。微观组织演变的定量X射线衍射分析表明，与缺陷饱和相对应的塑性应变与与应变硬化和应变软化之间的过渡相对应的临界塑性应变非常吻合。发现机械行为的开始取决于铁含量，铁含量的增加增强了晶体缺陷和晶粒尺寸对机械行为的影响。

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