Microstructure and texture development of pure aluminum and aluminum alloy processed by high speed hot rolling |
| |
Authors: | Seong-Hee Lee Tetsuo Sakai |
| |
Affiliation: | (1) Department of Advanced Materials Science and Engineering, Mokpo National University, 61, Dorim-ri, Cheonggye-myeon, Mun-gun, 534-729 Jeonnam, Korea;(2) Department of Materials Science and Engineering, Graduate School of Engineering, Osaka University, 2-1, Yamada-Oka, 565-0871 Suita, Osaka, Japan |
| |
Abstract: | The microstructure and texture development of pure aluminum and aluminum alloy processed by high speed hot rolling are investigated.
The aluminum sheets are rolled at temperatures ranging from 410°C to 560°C at a rolling speed of 15m/s without lubrication
and quenched into water at an interval of 30 ms after rolling. The redundant shear strain induced by high friction increases
beneath the surface at a reduction above 50% for Al alloy (AA5052) and above 60% for pure Al (AA1050). Dynamic recrystallization
occurs in the surface region when the equivalent strain exceeds a critical value that depends on rolling temperature, while
only recovery occurs in the center region. The critical equivalent strain for the occurrence of recrystallization in AA5052
is lower than that in AA1050. When the large strain is introduced beneath the surface, the shear texture, the main components
of which are {001}<110> and {111}<110>, develops. In the center region, Cu-orientation and cube orientation develop. The shear
texture beneath the surface is weak when recrystallization occurs. |
| |
Keywords: | hot rolling shear strain microstructure texture |
本文献已被 SpringerLink 等数据库收录! |
|