| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2025
|
| Presentation Title |
Microstructure and alloy design to achieve excellent formability, strength and mechanical anisotropy in bake-hardenable magnesium alloy sheets |
| Author(s) |
Xuan Luo, Isao Nakatsugawa, Taisuke Sasaki, Zehao Li, Taiki Nakata, Ming-Zhe Bian, Yasumasa Chino, Shigeharu Kamado, Kazuhiro Hono |
| On-Site Speaker (Planned) |
Taisuke Sasaki |
| Abstract Scope |
Heat treatable magnesium alloys hold promise for overcoming the strength-room temperature formability trade-off that limits the structural applications. This study discusses strategies for alloy design and microstructures to achieve excellent formability and strength. A compositionally optimized Mg-2.4Zn-0.3Ca-0.2Al-0.4Mn alloy exhibited formability with an Index Erichsen value of 8.0 mm in the solution treated condition due to the weakened basal texture. The 2%-strain and 170 °C/20 min aging resulted in a high average yield strength along the rolling and transverse directions of ~200 MPa due to Ca and Zn segregation on dislocations and Ca-Zn co-clusters dispersion. The texture changed from a TD-split to an "annular" texture by the optimizing the hot-rolling process. This could reduce the in-plane yield anisotropy, i.e., the rolling direction to transverse direction strength ratio, from 1.5 to 1.2 without compromising strength and formability. Since this alloy also showed satisfactory corrosion resistance, this system is promising for structural applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Mechanical Properties, Characterization |