| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-24: Variations in Microstructural Characteristics and Mechanical Properties of High-speed-extruded Mg-Bi Alloys through Al Addition |
| Author(s) |
Sang-Cheol Jin, Sunghyuk Park |
| On-Site Speaker (Planned) |
Sang-Cheol Jin |
| Abstract Scope |
Magnesium alloys are key in lightweighting transportation due to their low density and high strength. While high-alloyed Mg–Al–Zn and Mg–Zn–Zr alloys occur hot cracking at high extrusion speeds and temperatures, recently developed Mg–Bi alloys resist such defects because of the higher melting point of Mg3Bi2 phases and matrix. This study investigates the effect of aluminum additions on the microstructure and mechanical properties of high-speed extruded Mg–Bi alloys. All specimens were extruded at 400 ℃ and 40 m/min using a 300-ton direct extrusion machine. The extruded materials were subjected to a tensile test, and the Vickers hardness was measured after T5 heat treatment to compare changes in mechanical properties of the high-speed extruded material depending on the amount of aluminum addition. Higher hardness and strength were obtained by adding aluminum, and further expanded applications can be expected. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Magnesium, Shaping and Forming, Mechanical Properties |