Superplastic Behaviour of AA5083 Aluminium Alloy with Scandium and Zirconium
| Autor: | Anton Smolej, Brane Skaza, Vukasin Dragojevic, Edvard Slacek, Boštjan Markoli, Damjan Klobčar |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Zirconium
Materials science Mechanical Engineering Metallurgy Alloy chemistry.chemical_element Superplasticity Atmospheric temperature range engineering.material Strain rate Condensed Matter Physics chemistry Mechanics of Materials visual_art engineering Aluminium alloy visual_art.visual_art_medium General Materials Science Scandium Ductility |
| Zdroj: | Materials Science Forum. :395-401 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.706-709.395 |
| Popis: | The aim of the present investigation was to determine and to compare the superplastic behaviour of the AA5083 (Al-Mg-Mn) alloy with Sc and Zr additions. The investigated alloys were processed to form sheets by conventional hot and cold rolling. The superplastic properties were determined with strain rates in the range of 1x10-4to 5x10-2s-1and forming temperatures of 350 to 550°C. The results showed that the alloy with about 0.4% Sc exhibited a high superplastic ductility across a wide temperature range and strain rates up to 1x10-2s-1. The highest elongations to failure of about 2000% were attained at 550°C and at an initial strain rate of 5x10-3s-1. However, the alloy with about 0.15% Zr exhibited elongations up to 600%. The FSP processed Al-4.5Mg alloy with combined addition of about 0.2% Sc and 0.15% Zr exhibited good superplastic properties at higher strain rates (> 1x10-2s-1) with elongations up to 1500%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|