Study on microstructure and properties of mechanically electrodeposited nanocrystalline Fe-Ni alloy

Study on microstructure and properties of mechanically electrodeposited nanocrystalline Fe-Ni alloy
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机械电沉积纳米晶Fe-Ni合金的组织与性能研究

DOI:
10.1080/10584587.2017.1338499
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发表时间:
2019-09
影响因子:
0.7
通讯作者:
Xiaocong Tang
Xiaocong Tang
中科院分区:
工程技术4区
文献类型:
--
作者:
Zengwei Zhu;Yongliang Guo;Zhongjiang Jiang;Xiaocong Tang

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摘要采用电沉积-机械抛光工艺制备了铁镍合金,并与传统电沉积工艺进行了对比分析。结果表明,机械抛光可以显著影响晶体生长和晶粒细化。同时抛光可以显著提高镀层的显微硬度,降低镀层的热膨胀系数。随着电流密度的增加,晶粒变粗,显微硬度和热膨胀系数均降低。可以预期,获得具有低TEC和高强度的Fe-Ni合金的有前途的技术。
ABSTRACT Fe-Ni alloys were prepared by electrodeposition process assisted with mechanical polishing and analyzed by comparison with the traditional electrodeposition process. The results showed that mechanical polishing can significantly affect the crystalline growth and grain refinement resulted. Simultaneously the polishing can significantly enhance the micro-hardness and reduce the thermal expansion coefficient (TEC) of the electrodeposited Fe-Ni alloy. Both micro-hardness and thermal expansion coefficient decrease with increase of current density due to the grain coarsen. A promising technology for achieving Fe-Ni alloy with low TEC and high strength can be expected.
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