| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2020
|
| Presentation Title |
Effects of Zn Additions on the Room Temperature Formability and Strength in Mg-1.2Al-0.5Ca-0.4Mn Alloy Sheets |
| Author(s) |
Zehao Li, Taisuke Sasaki, Kazuhiro Hono, Mingzhe Bian, Taiki Nakata, Shigeharu Kamado, Yu Yoshida, Nozomu Kawabe |
| On-Site Speaker (Planned) |
Zehao Li |
| Abstract Scope |
Recent studies have suggested that the Mg-Al-Zn-Mn-Ca system is promising to conquer the strength-formability trade-off dilemma. In this work, the role of Zn in the microstructure and mechanical properties in the Mg-1.2Al-0.5Ca-0.4Mn-xZn (wt.%, x=0, 0.8 and 1.6) alloy sheets is clarified based on the detailed microstructure characterization. The room-temperature stretch formability of the solution-treated sheet is improved with increasing the Zn content. The Mg-1.2Al-0.5Ca-0.4Mn-1.6Zn alloy shows an excellent stretch formability with the largest Index Erichsen (I.E.) value of 8.2 mm due to a weak transverse direction split texture. Subsequent artificial aging at 170 °C for 2h (T6) leads to substantial increase in strength without the loss of ductility. The peak-aged Mg-1.2Al-0.5Ca-0.4Mn-1.6Zn alloy exhibits a high tensile yield stress of 210 MPa with a good elongation of 30.1% because of a dense dispersion of Guinier-Preston (G.P.) zones within the Mg matrix. |
| Proceedings Inclusion? |
Planned: |