东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (9): 1254-1257.DOI: -

• 论著 • 上一篇    下一篇

原位形变Cu-14.5%Fe复合材料的组织和性能研究(Ⅰ)——组织演变

屈磊;王恩刚;左小伟;赫冀成;   

  1. 东北大学材料电磁过程研究教育部重点实验室;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 出版日期:2010-09-15 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2007AA03Z519);;

Microstructure and property of in situ deformed Cu-14.5%Fe composites(I) microstructure evolution

Qu, Lei (1); Wang, En-Gang (1); Zuo, Xiao-Wei (1); He, Ji-Cheng (1)   

  1. (1) Key Laboratory of Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China
  • Received:2013-06-20 Revised:2013-06-20 Online:2010-09-15 Published:2013-06-20
  • Contact: Wang, E.-G.
  • About author:-
  • Supported by:
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摘要： 研究了不同形变量时,原位形变Cu-14.5%Fe(体积分数)复合材料的显微组织的演变和Fe纤维的组织特征.结果表明,随拉拔过程形变量的增加,Cu-Fe合金凝固过程中形成的无序分布的Fe树枝晶逐渐转变为沿拉拔方向排列,并在横截面上形成卷曲的带状形貌,这是由于两相在大变形时,发生了织构取向作用的结果.通过显微组织的定量分析可知,Fe纤维间距d与形变量η间存在指数关系,即d=41.76exp(-0.411η);Fe纤维的厚度δFe和宽度bFe与形变量η分别满足ln(δFe)=3.396-0.686η,ln(bFe)=4.114-0.431η的关系.

关键词: 原位形变, Cu-Fe复合材料, 显微组织, Fe纤维

Abstract: The microstructure evolution and characteristics of Fe fibers of in situ deformed Cu-14.5%Fe composites were investigated. The results showed that the disordered Fe dendrites formed in solidification process of Cu-Fe alloys are rearranged along the drawing direction with the increasing deformation due to drawing and present the ribbon-like morphology on the transverse section. This is because of the texture orientation of the two different phases during large deformation. Based on the quantitative metallographic analysis, a relationship between interfiber spacing d and the drawing ratio η is given, i.e., d=41.76exp(-0.411η). Moreover, the relationships between the fiber thickness (δFe) and fiber width (bFe) and the drawing ratio can be expressed as ln(δFe)=3.396-0.686η and ln(bFe)=4.114-0.431η, respectively.

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