| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
TMS-DGM Symposium on Lightweight Metals: A Joint US-European Symposium on Challenges in Light Weighting the Transportation Industry
|
| Presentation Title |
D-35: Development of New Magnesium Alloy Strengthened by Nano Second Phase Precipitation |
| Author(s) |
Yuansheng Yang, Tianjiao Luo, Minglin He, Shaozhen Zhu, Jixue Zhou, Shouqiu Tang |
| On-Site Speaker (Planned) |
Yuansheng Yang |
| Abstract Scope |
In order to meet the needs of lightweight of electric vehicles, several kinds of magnesium alloys are developed by multi-alloying and nano-phase precipitation method. Magnesium alloy ZA81M is typical among these alloys. The yield strength, ultimate tensile strength and elongation of ZA81M alloy after extrusion and aging treatment are 298 MPa, 348 MPa and 18.0%, respectively. Another Mg-Zn-Zr-Cu magnesium alloy is developed with YS 264 MPa, UTS 334 MPa and El. 20%. An Extruded Mg-Zn-Sn-Ca alloy developed by the method has tensile properties of YS 330 MPa, UTS 400 MPa and El. 20%. The TEM observation shows that in the matrix there are a lot of nano second phases which precipitated along [0001] orientation. These nano second particles effectively pin dislocations during the plastic deformation of the alloy. So, the strengths of the alloy are enhanced by the nano second phases blocking dislocation movement by pinning dislocations. |
| Proceedings Inclusion? |
Planned: Light Metals |