| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
15th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing
|
| Presentation Title |
The Roles of Co and Ni Additions to High Solute Content Fe-contaminated Al Alloys in Beneficing Microstructure and Tensile Properties |
| Author(s) |
Jose Spinelli, Marcella Xavier |
| On-Site Speaker (Planned) |
Jose Spinelli |
| Abstract Scope |
The accumulation of tramp impurities, particularly Fe, during recycling of Al alloys frequently leads to the production of coarse intermetallics during solidification, which affect final product mechanical properties Because lowering the Fe concentration and/or using thermomechanical processing to subdivide the particles is expensive, it is preferred to modify the morphology, size, and distribution of the IMCs during solidification. Benefiting the properties of Al-contaminated alloys entails increased recyclability and a reduction in the usage of virgin primary Al and downcycled alloys. The Al-8%Si-0.8%Fe-2.5%Cu-1.0%Zn (in wt.%) alloy was modified with 0.7%Ni and 0.7%Co Both dendritic growth and tensile properties were evaluated for the three alloys. The secondary dendrite arm spacings (SDAS) were found very refined for all alloys. The SDAS in the modified alloys was reduced in size. The Co addition of 0.7 % reached higher values of tensile strength (210 MPa) without major losses in ductility. |