|
|||||
|
|
Synthesis of non-equilibrium phases in immiscible metals mechanically mixed by high pressure torsion |
|
| Authors: | Tatsuya Miyazaki Daisuke Terada Yoji Miyajima Challapalli Suryanarayana Reiko Murao Yoshihiko Yokoyama Kazumasa Sugiyama Minoru Umemoto Yoshikazu Todaka Nobuhiro Tsuji |
| Affiliation: | (1) Department of Materials Science and Engineering, Graduate School of Engineering, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan;(2) Department of Materials Science and Engineering, Tokyo Institute of Technology, Nagatsuta-cho, Midori-ku, Yokohama Kanagawa, 226-8503, Japan;(3) Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA;(4) Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan;(5) Department of Production Systems Engineering, Toyohashi University of Technology, Hibarigaoka 1-1, Tempaku, Toyohashi Aichi, 441-8580, Japan |
| Abstract: | 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. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |