|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||C-18: Effect of Alloying Elements on Microstructure Adjacent to Grain Boundaries in Al-Mg-Si Based Alloys
||Shingo Ishizawa, Shigeru Kuramoto, Goroh Itoh
|On-Site Speaker (Planned)
The Al-Mg-Si base 6000 series aluminum alloys have been widely used as structural materials, since they have excellent combination of mechanical properties and durability. However, several recent researches have shown that some of them are susceptible to environmental embrittlement. Among the 6000 series alloys, some alloys show premature failure in humid air environment due to grain boundary cracking and inferior resistance to stress corrosion cracking (SCC). In this study, we have examined the influence of alloying elements on size and distribution of grain boundary precipitates, by using Al-Mg-Si based alloys with different amounts of alloying elements, Mg, Si and Cu, where the orientation relationship between grain boundary precipitates and adjacent matrix has been also taken into account. The effect of microstructure adjacent to grain boundary on mechanical behavior will be discussed.
||Planned: Light Metals