| Autor: |
Shi Ming Hao, Jing Pei Xie |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Advanced Materials Research. 833:271-275 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.833.271 |
| Popis: |
The hot deformation behaviors of 30%SiCp/2024 aluminum alloy composites was studied by hot compression tests using Gleeble-1500 thermomechanical simulator at temperatures ranging from 350-500 °C under strain rates of 0.01-10 s-1. The true stress-true strain curves were obtained in the tests. Constitutive equation and processing map were established. The results show that the flow stress decreases with the increase of deformation temperature at a constant strain rate, and increases with the increase of strain rate at constant temperature, indicating that composite is a positive strain rate sensitive material. The flow stress behavior of composite during hot compression deformation can be represented by a Zener-Hollomon parameter in the hyperbolic sine form. Its activation energy for hot deformation Q is 153.251 kJ/mol. The optimum hot working conditions for this material are suggested. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
