Synthesis of non-equilibrium phases in immiscible metals mechanically mixed by high pressure torsion

被引：0
|
作者：
Tatsuya Miyazaki
Daisuke Terada
Yoji Miyajima
Challapalli Suryanarayana
Reiko Murao
Yoshihiko Yokoyama
Kazumasa Sugiyama
Minoru Umemoto
Yoshikazu Todaka
Nobuhiro Tsuji
机构：
[1] Kyoto University,Department of Materials Science and Engineering, Graduate School of Engineering
[2] Tokyo Institute of Technology,Department of Materials Science and Engineering
[3] University of Central Florida,Department of Mechanical, Materials and Aerospace Engineering
[4] Tohoku University,Institute for Materials Research
[5] Toyohashi University of Technology,Department of Production Systems Engineering
来源：
Journal of Materials Science | 2011年 / 46卷
关键词：
Mechanical Alloy; Select Area Electron Diffraction; Accumulative Roll Bonding; High Pressure Torsion; Supersaturated Solid Solution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The structural changes in mechanically mixed metals of immiscible combinations of elements caused by bulk mechanical alloying (MA) through the use of high pressure torsion (HPT) were investigated in Ag–Ni and Nb–Zr systems. There was no alloying between Ag and Ni on atomic scale even after 100 rotations of HPT. On the other hand, the β-Zr phase started to appear after HPT 2 rotations in the Nb–Zr system, even though β-Zr is a high temperature phase. Further, Nb and Zr were completely mixed to form a bcc structured single phase after HPT 100 rotations. The sequence of alloying in the Nb–Zr system during HPT was discussed. These results clearly suggest that non-equilibrium phases can form in the Nb–Zr system by bulk MA by the use of HPT.
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页码：4296 / 4301
页数：5
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