About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Processing and Characterization
|
Presentation Title |
Manufacturing A206 Aluminum Alloy by Step Sand Casting: Effect of Solidification Time on Mechanical and Surface Properties of the Cast Samples Using Experimental and Simulation Results |
Author(s) |
Amir Kordijazi, Pradeep Rohatgi |
On-Site Speaker (Planned) |
Amir Kordijazi |
Abstract Scope |
In the present study, the effect of section size and solidification time on the grain size, hardness, contact angle (CA), and corrosion resistance of A206-T7 aluminum alloy was investigated. A step casting, with varying section thickness (0.25, 0.5, 0.75, and 2.0 inches) was made in a sand mold. Casting simulation showed a quantitative increase in solidification time with section thickness. The experimental results indicate that by increasing casting thickness from 0.25 inches to 2 inches, the average grain size increases from 80 µm to 124 µm. Wetting study shows that water CA values for different section sizes range between 71 to 87 degree. It was found that the corrosion current nearly decreases by 73% when section thickness increases from 0.75 to 2 inches suggesting that the dominant corrosion mechanism in this alloy is intergranular corrosion. |
Proceedings Inclusion? |
Planned: Light Metals |