4.6 Article

Comparative Hot Workability Characteristics of an Al-Si/SiCp Aluminium Matrix Composite Hybrid Reinforced with Various TiB2 Additions

期刊

METALS AND MATERIALS INTERNATIONAL
卷 27, 期 6, 页码 1880-1891

出版社

KOREAN INST METALS MATERIALS
DOI: 10.1007/s12540-019-00585-9

关键词

Hybrid aluminium matrix composites; TiB2 additions; Flow stress; Processing map; Microstructure

资金

  1. National Natural Science Foundation of China [51574118, 51774124]
  2. Natural Science Foundation of Hunan province [2015JJ4017]
  3. Key Technologies RAMP
  4. D in Strategic Emerging Industries and Transformation in High-tech Achievements Program of Hunan Province, China [2016GK4056, 2018GK5068]

向作者/读者索取更多资源

Hot compression tests were conducted on Al-Si/SiCp + TiB2 hybrid aluminium matrix composites with various TiB2 contents. The results showed that the peak stress increased with higher TiB2 content and the optimal deformation conditions shifted to higher temperature and lower strain rate. The flow softening mechanism also transformed with increasing TiB2 content.
Hot compression tests were conducted on Al-Si/SiCp + TiB2 hybrid aluminium matrix composites with various TiB2 contents at temperatures from 350 to 500 degrees C and strain rates from 0.001 to 1 s(-1). The hot workability characteristics and deformation mechanisms were investigated by combining constitutive equations, processing maps and microstructural observations through scanning electron microscopy and transmission electron microscopy measurements. The results showed that there were small differences in the peak stresses when the contents of TiB2 were 3% and 5%, while the peak stress increased when the content of TiB2 reached 8%. The contents of TiB2 had little influence on the activation energy but affected the processing maps to a certain extent. The areas of the instability zones were observed to gradually increase with increased TiB2 additions. The optimal deformation conditions of the studied materials migrated from a low temperature and high strain rate to a high temperature and low strain rate with increasing TiB2 content. In addition, the flow softening mechanism transformed from dynamic recrystallization + dynamic recovery to dynamic recovery with increasing TiB2 content.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据