The effect of pre-ageing temperature and retrogression heating rate on the strength and corrosion behaviour of AA7150 |
| |
Authors: | DK Xu N Birbilis PA Rometsch |
| |
Affiliation: | ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University, VIC 3800, Australia |
| |
Abstract: | The effects of processing condition variations in the retrogression and re-ageing (RRA) treatment of AA7150 have been investigated. The results reveal that the corrosion resistance and strength of RRA-treated samples are sensitive to the pre-ageing temperature and retrogression heating rate. With an intermediate pre-ageing temperature of 60 °C and a slow retrogression heating rate of 5 °C/min, RRA-treated samples can be tailored towards a good combination of both corrosion resistance and strength, owing to a smaller potential difference between grain-boundary precipitates and the matrix, and a larger volume fraction of strengthening precipitates in the matrix. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|