About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Processing and Characterization
|
Presentation Title |
Influence of TiB<SUb>2 Particles on Modification of Mg<SUb>2Si Eutectic Phase in Al-Zn-Si-Mg-Cu Cast Alloys |
Author(s) |
Byung-Joo Kim, Sung Su Jung, Yong Ho Park, Young Cheol Lee |
On-Site Speaker (Planned) |
Byung-Joo Kim |
Abstract Scope |
In this study, the effect of TiB<SUb>2 particles on the modification of eutectic phase in Al-Zn-Si-Mg-Cu system alloys is investigated. The microstructure showed that an excellent effect can be achieved after the addition of TiB<SUb>2 particles. The morphology of eutectic Mg<SUb>2Si changed from large Chinses script to fine polygonal shape with a significant reduction in size. Modified eutectic Mg<SUb>2Si particles were investigated using an optical microscope and field emission scanning/transmission electron microscope, and it was confirmed that TiB<SUb>2 particles acted as nucleation sites for the eutectic Mg<SUb>2Si phase. Upon these results, a possible mechanism of eutectic Mg<SUb>2Si phase modification by the addition of TiB<SUb>2 particles is proposed. |
Proceedings Inclusion? |
Planned: Light Metals |