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Enhancement in mechanical properties of bulk nanocrystalline Fe-Ni alloys electrodeposited using propionic acid

机译：增强使用丙酸电沉积的纳米Fe-Ni纳米晶合金的力学性能

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摘要

A method for enhancement of the mechanical properties of electrodeposited bulk nanocrystalline Fe-Ni alloys was explored. Bulk nanocrystalline Fe-Ni alloys were prepared using electrolytes that primarily consisted of iron sulfate and nickel sulfamate with propionic acid. Varying the concentration of propionic acid in the deposition bath produced no significant change in the C, S, or Ni content or grain sizes of the electrodeposited alloys. In contrast, the hardness of bulk nanocrystalline Fe-Ni alloys increased from 4.0 to 5.0 GPa with the increase of propionic acid concentration from 0 to 3.0 g/L. In addition, the tensile strength also increased from 1.6 to 1.7 GPa while maintaining a good tensile ductility of ～10%. These increases for electrodeposited alloys can be explained by grain boundary relaxation strengthening. After annealing at relatively mild temperatures, the alloys electrodeposited without propionic acid exhibited higher strength than at the as-deposited state, while the strength of the alloys electrodeposited using 3.0 g/L propionic acid remained unchanged. The results of this study indicate that the addition of propionic acid to the deposition bath could remove the excess grain boundary defects of Fe-Ni alloys in as-deposited states, requiring no additional thermal treatments and enhancing the mechanical strength to high levels.
机译：探索了一种提高电沉积块状纳米晶铁镍合金力学性能的方法。使用主要由硫酸铁和氨基磺酸镍与丙酸组成的电解质制备块状纳米晶Fe-Ni合金。沉积浴中丙酸浓度的变化不会导致电沉积合金的C，S或Ni含量或晶粒尺寸发生明显变化。相反，随着丙酸浓度从0到3.0 g / L的增加，块状纳米晶Fe-Ni合金的硬度从4.0 GPa增加到5.0 GPa。此外，拉伸强度也从1.6 GPa增加到1.7 GPa，同时保持了约10％的良好拉伸延展性。电沉积合金的这些增加可以通过晶界弛豫加强来解释。在相对温和的温度下退火后，没有丙酸电沉积的合金显示出比沉积时更高的强度，而使用3.0 g / L丙酸电沉积的合金的强度保持不变。这项研究的结果表明，向沉积浴中添加丙酸可以去除处于沉积状态的Fe-Ni合金的多余晶界缺陷，而无需额外的热处理并将机械强度提高到高水平。

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  • 来源
    《Materials Science and Engineering》 |2014年第23期|505-510|共6页
  • 作者

    Isao Matsui; Hiroki Mori; Tomo Kawakatsu; Yorinobu Takigawa; Tokuteru Uesugi; Kenji Higashi;

  • 作者单位

    Department of Materials Science, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan,Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology, 2266-98 Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan;

    Department of Materials Science, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan;

    Department of Materials Science, Osaka Prefecture University, 1-1, Gakuen-cho, Sakai, Osaka 599-8531, Japan;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Nanocrystalline metals; Electrodeposition; Fe-Ni alloys; Mechanical properties; Grain boundary relaxation;

    机译：纳米晶金属;电沉积;铁镍合金机械性能晶界弛豫;

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