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首页> 外文期刊>Journal of nano research >Grain Size Effect on Mechanical Behavior of Nanocrystalline Alloy Films
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Grain Size Effect on Mechanical Behavior of Nanocrystalline Alloy Films

机译：晶粒尺寸对纳米晶合金薄膜力学行为的影响

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摘要

The effect of grain size in nanocrystalline alloys is difficult to analyze because challenges of controlling a number of other microstructure factors. This paper designed and prepared a series of multilayered films with Al-Zr crystalline layers of different thickness but with amorphous layers of identical thickness. In these multilayered films, the heights of columnar crystals in crystalline layers were controlled from 5 to 160 nm and their diameters were kept at 10 to 15 nm, independent of their heights. This design achieved the control of grain size, independent from other microstructure factors. The analysis of mechanical properties of these multilayered films showed that the inverse Hall-Petch phenomenon also exists in Al-Zr nanocrystalline alloys. The critical grain sizes of deviation from the Hall-Petch relationship and the inverse Hall-Petch phenomenon are approximately 40 nm and 10 nm respectively. These mechanical behaviors of nanocrystalline alloys are similar to those reported in pure metals.
机译：纳米晶合金中晶粒尺寸的影响很难分析，因为控制许多其他微观结构因素面临挑战。本文设计并制备了一系列多层膜，这些膜具有不同厚度的Al-Zr晶体层，但具有相同厚度的非晶层。在这些多层膜中，将结晶层中的柱状晶体的高度控制在5至160nm，并且将其直径保持在10至15nm，而与它们的高度无关。这种设计实现了对晶粒尺寸的控制，而不受其他微观结构因素的影响。对这些多层膜的机械性能的分析表明，Al-Zr纳米晶合金中也存在逆Hall-Petch现象。偏离霍尔-Petch关系和逆霍尔-Petch现象的临界晶粒尺寸分别约为40 nm和10 nm。纳米晶合金的这些机械行为类似于纯金属中报道的那些。

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  • 来源
    《Journal of nano research》 |2017年第2017期|204-210|共7页
  • 作者

    Ma Bingyang; Shi Kaicheng; Shang Hailong; Qi Jinyan; Li Rongbin; Li Geyang;

  • 作者单位

    Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China|Shanghai Dianji Univ, Sch Mech Engn, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China;

    Shanghai Dianji Univ, Sch Mech Engn, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanocrystalline alloys; Aluminum alloys; Hall-Petch effect; Multilayered films; Hardness;

    机译：纳米晶合金;铝合金;霍尔效应;多层膜;硬度;

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