东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2003, Vol. 24 ›› Issue (8): 795-797.DOI: -

• 论著 • 上一篇    下一篇

加介质球磨Fe-Ni粉末的相结构

张雅静;何开元;程力智;刘常升   

  1. 东北大学机械工程与自动化学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 发布日期:2013-06-24
  • 通讯作者: Zhang, Y.-J.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(59871013)

Phase constitution of ball-milling Fe-Ni powders with alcohol

Zhang, Ya-Jing (1); He, Kai-Yuan (2); Cheng, Li-Zhi (2); Liu, Chang-Sheng (2)   

  1. (1) Sch. of Mech. Eng. and Automat., Northeastern Univ., Shenyang 110004, China; (2) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Published:2013-06-24
  • Contact: Zhang, Y.-J.
  • About author:-
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摘要： 在加乙醇作为介质球磨(湿磨)条件下,采用6∶1的球料比,240r/min的转速,球磨x(Fe)∶x(Ni)=(100-y):y(原子百分数,y=32,36,50,79)粉末,采用X射线衍射分析方法,研究了球磨产物的相结构变化、晶粒尺寸变化及晶格常数的变化·发现了x(Fe)∶x(Ni)=64∶36粉末在加乙醇介质球磨条件下,Fe在fcc相中的含量随球磨时间的增加先增后减这一新现象,且在整个过程中伴随着晶格常数和晶粒尺寸的变化;对于相同球磨时间不同成分配比的Fe Ni混合粉末,随着粉末中Ni含量的增加,bcc相晶格常数减小,fcc相的晶格常数增大,fcc相中Fe的含量增加,晶粒尺寸减小·

关键词: Fe-Ni合金, 机械合金化, 相结构, 磁性材料, 固溶体

Abstract: The phase constitution and grain size of ball-milling Fe-Ni powders with alcohol as well as the lattice parameter evolution were investigated by X-ray diffraction. The condition of ball-milling was taken as follow: the weight ratio of ball to powder is 6:1, and the revolving velocity is 240 r/min. It is shown that the Fe concentration in the Ni fcc phase increases with the increase of the ball-milling time. The fcc solid solution γ(Fe-Ni) is formed after milling 12 h. The a-Fe is separated out gradually from the γ (Fe-Ni) phase above milling 18 h. The fcc γ phase becomes pure again Ni after milling 48 h. With the further increase of the milling time, the lattice parameter of the a-Fe phase decreases. With the increase of Ni atom fraction in the Fe-Ni mixture meanwhile that of fcc phase increases.

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