| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Innovations in High Entropy Alloys and Bulk Metallic Glasses: An SMD & FMD Symposium in Honor of Peter K. Liaw
|
| Presentation Title |
Manipulating Structures/Properties of Bulk Metallic Glasses and High-entropy Alloys by Severe Plastic Deformation |
| Author(s) |
Koichi Tsuchiya |
| On-Site Speaker (Planned) |
Koichi Tsuchiya |
| Abstract Scope |
Effect of high-pressure torsion deformation on Zr-Cu-Al bulk metallic glass and high-entropy alloys was investigated. HPT deformation of Zr50Cu40Al10 bulk metallic glass led to significant reduction in nano-hardness and elastic modulus. These changes were accompanied by marked increase in relaxation heat and change in PDF profiles; thus interpreted as the results of structural rejuvenation. HPT was also applied to high entropy alloys, such as CrMnFeCoNi and Al0.3CoFeCrNi. It was revealed that the grain refinement to 50 nm occurs only after 1 turn of HPT. Formation of lamellar structures by nano twin or shear bands plays an important role in the grain refinement, which may be typical of very low stacking fault energy alloys. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |