The Effect of the Erbium Content on the Microstructure and Mechanical Property of 6061 Aluminum Alloys

Autor: Bolong Li, Wen Jian Lv, Peng Qi, Zuo Ren Nie
Rok vydání: 2017
Předmět:
Zdroj: Materials Science Forum. 898:35-40
ISSN: 1662-9752
DOI: 10.4028/www.scientific.net/msf.898.35
Popis: The 6061 aluminum alloys with different content of erbium were prepared. The erbium content was optimized by measurement of grain refining effects and tensile strength. After solid solution treatment of the alloy with optimized erbium content at 505 °C ~ 595 °C for 4 h. and then ageing at –160 °C ~ 200 °C for 3 h., the grain size decreased with the content of erbium, achieving the most effective grain size refinement at the erbium content of 0.15wt.%. The tensile strength of as-cast alloy could reach up to 243 MPa at the erbium content of 0.15%. -Combined with the microstructures and mechanical properties, the erbium content of 0.15% was the optimized content, and heat treatments of ageing at 180 °C for 3 h. followed by solid solution at 565 °C for 4 h were suggested.
Databáze: OpenAIRE