Effect of ball milling on structure and thermal stability of Al84Gd6Ni7Co3 glassy powders |
| |
| Affiliation: | 1. From the Endocrinology and Nutrition Service. University Hospital of Valladolid. IEN-University of Valladolid, Valloadolid, Spain;2. Endocrinology and Nutrition Investigation Center, School of Medicine, IEN-University of Valladolid, Valladolid, Spain;3. Internal Medicine Service, Hospital Rio Hortega IEN-University of Valladolid, Valladolid, Spain.;1. Informatics VII: Robotics and Telematics, University of Würzburg, Am Hubland, 97074 Würzburg, Germany |
| |
| Abstract: | The influence of ball milling on microstructure and thermal stability of the gas-atomized Al84Gd6Ni7Co3 glassy powder has been investigated as a function of the milling time. The results show that the traces of crystalline phases present in the as-atomized powder decrease gradually with increasing the milling time. The thermal stability of the fcc-Al primary phase increases while the thermal stability of the intermetallic phases decreases with increasing milling. Moreover, significant improvement in hardness occurs after milling, which is attributed to the amorphization of the residual crystalline phases present in the as-atomized powder. These results demonstrate that milling is an effective way for amorphizing the residual crystalline present in the amorphous matrix and to control the thermal stability of the material. |
| |
| Keywords: | A. Intermetallics, miscellaneous B. Thermal stability C. Mechanical alloying and milling F. Diffraction |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
