The Formation of Twins in Al-10Zn-3Mg-1.8Cu Alloy by Cryomilling |
| |
| Authors: | Bin Yang Hanbin Chen Lu Yang Haibo Zhang Zhigang Zak Fang |
| |
| Affiliation: | 1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, People’s Republic of China
2. Department of Metallurgical Engineering, The University of Utah, Salt Lake City, UT, 84112-0114, USA
|
| |
| Abstract: | Aluminum alloys with high stacking fault energies have difficulty forming deformation twins at room temperature and at a low strain rate. In this study, several deformation twins were found in Al-10.0Zn-3.0Mg-1.8Cu alloy powders after being cryomilled for a certain period of time. Annealing twins were also found in the same powders after they had been cryomilled first and then placed at an ambient temperature for a longer period of time, up to 2 years. It is suggested that the Venables model on deformation twins is plausible to explain the twin propensity formed in these powders. The study of the formation mechanism of both deformation and annealing twins concludes that twinning deformation can reduce the grain boundary energy of the alloy powders when the powders are cryomilled first and then placed at the ambient temperature for a longer period of time, up to 2 years. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
