Abstract
This paper describes grain refinement of an Al-3%Mg-0.2%Sc alloy using the equal-channel angular pressing (ECAP) technique at room temperature. It is shown that a grain size of 0.2 μm is obtained with this technique. The paper also presents the results of tensile tests for the fine-grained Al-3%Mg-0.2%Sc alloy over a wide range of strain rates. Elongations of more than 1000% are attained at a temperature of 673 K in a high strain rate range of more than 10-2 s-1. Transmission electron microscopy and scanning ion microscopy are employed for microstructural observations before and after tensile testing. The results are compared with those of a cold-rolled Al-3%Mg-0.2%Sc alloy. It is demonstrated that grain refinement using the ECAP technique is useful for the production of Al alloys exhibiting high strain rate superplasticity.
| Original language | English |
|---|---|
| Pages (from-to) | 376-380 |
| Number of pages | 5 |
| Journal | Keikinzoku/Journal of Japan Institute of Light Metals |
| Volume | 50 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2000 Aug |
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry