| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys, Processing and Characterization
|
| Presentation Title |
The Effect of Rare Earth Mischmetal on the High Temperature Tensile Properties of an A356 Aluminum Alloy |
| Author(s) |
Joshua Stroh, Dimitry Sediako, David Weiss |
| On-Site Speaker (Planned) |
Joshua Stroh |
| Abstract Scope |
Aluminum-silicon (Al-Si) based alloys are prominently used in the transportation industry, due to their impressive wear resistance, castability and lightweight properties. Small additions of magnesium (Mg) can improve the mechanical properties through precipitation of strengthening intermetallics such as Mg2Si. However, the poor thermal stability of Mg2Si restricts the use of Al-Si-Mg alloys, such as A356, to only lower temperature applications (i.e. less than ~150 °C). With the growing demand for increasing fuel efficiency amongst the transportation industry (achieved through elevating the operating pressure and temperature of engines), it is necessary to investigate methods of improving the thermal stability and mechanical properties of the well-established A356 alloy. Addition of rare earths (RE) to Al alloys can improve the thermal stability through precipitation of fine Al-RE intermetallics. Thus, this paper aims at characterizing the effects that RE mischmetal has on the elevated temperature strength, ductility, and creep resistance of an A356 alloy. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Mechanical Properties, Other |