高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (6): 964.

• 论文 • 上一篇    下一篇

亚稳态Fe0.5-xCoxCu0.5纳米晶粉末的微观结构研究

佟富强1,2, 王春忠1, 李畅1, 陈岗1, 于文学1   

  1. 1. 吉林大学汽车材料教育部重点实验室, 材料科学与工程学院, 长春 130023;
    2. 苏州大学物理学院, 苏州 215006
  • 收稿日期:2002-02-27 出版日期:2003-06-24 发布日期:2003-06-24
  • 通讯作者: 佟富强(1960年出生),男,博士,教授,从事亚稳态合金以及多层薄膜的研究.
  • 基金资助:

    吉林大学创新科研基金(批准号:2000B07)资助

Microstructure of Nanocrystalline Fe0.5-xCoxCu0.5 Alloy Powders by Mechanical Alloying

TONG Fu-Qiang1,2, WANG Chun-Zhong1, LI Chang1, CHEN Gang1, YU Wen-Xue1   

  1. 1. Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130023, China;
    2. Physics School of Suzhou University, Suzhou 215006, China
  • Received:2002-02-27 Online:2003-06-24 Published:2003-06-24

摘要: 利用机械合金化方法制备了Fe0.5-xCoxCu0.5(x=0,0.1,0.2,0.3,0.4,0.5)系列合金材料,采用X射线衍射和DSC方法对不同组分的样品进行了测试和分析,将XRD的分析结果与DSC测量结果进行了比较,并从γ相转变温度的角度对微观结构进行了研究.结果表明,球磨60h后可以得到以Cu为基的fcc的均相结构,合金粉末的晶粒尺寸、均方根内应力和均缺陷密度与组分的关系不大,晶格常数与组分的关系很大,Co0.5Cu0.5样品的晶格常数比纯Cu的小.合金样品的组分和微观结构对γ相的转变温度和放热焓有很大影响.

关键词: 机械合金化, Fe0.5-xCoxCu0.5合金, 纳米晶粉末, 微观结构

Abstract: A series of Fe 0.5-xCoxCu0.5 alloys were obtained by mechanical alloying with x=0, 0.1, 0.2, 0.3, 0.4 and 0.5. The microstructure of the samples with different milling times were measured and analyzed by the methods of XRD and DSC considering the transition temperature of γ phase. The results showed that the fcc phases of Fe 0.5-xCoxCu0.5 alloys for different compositions had been obtained under60 h milling. The average grain size, the average square root of second strain and the average value of the dislocation density of Fe0.3Co0.2Cu0.5 alloy powders had a little relationship with the composition. ForCo0.5Cu0.5, the lattice parameter is smaller than that of pure Cu. The composition and microstructure of the samples with the same milling have a lot of effects on the transition temperature of γ phase and exothermic enthalpy.

Key words: Mechanical alloying, Fe 0.5-xCoxCu0.5 alloy, Nanocrystalline powders, Microstructure

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