|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Magnesium Technology 2021
||Achieving Excellent Room Temperature Formability and High Strength in Wrought Magnesium Alloy Sheets
||Taisuke Sasaki, Zehao Li, Kazuhiro Hono
|On-Site Speaker (Planned)
Precipitation hardenable magnesium alloy is promising to overcome the strength-formability dilemma as demonstrated in a recently developed bake-hardenable Mg-Al-Zn-Ca-Mn alloy, which exhibits comparable room temperature formability and strength with 6XXX series aluminum alloys. This presentation will discuss strategies to realize the excellent room temperature formability and the high strength in magnesium alloy sheets.
The addition of Zn plays a critical role in achieving good room temperature formability in Mg-Ca-Al alloy by texture weakening. The weakened texture is attributed to the nucleation of weakly textured grains along twin boundaries during the solution treatment. The Zn content should be optimized to achieve satisfactory bake-hardenability. A systematic study shows that the bake-hardenability is a unique feature observed in the dilute magnesium alloys strengthened by the precipitation of Guinier Preston (G.P.) zones. Therefore, the precipitation hardenable dilute Mg-Zn-Ca alloy would open up a possibility to broaden the application of wrought magnesium alloys.