|About this Abstract
|2022 TMS Annual Meeting & Exhibition
|Influence of Third Alloying Element on Dislocation Slip and Twinning Activities in Mg-Nd Based Alloys
|Xun Zeng, Dietmar Letzig, Karl Ulrich Kainer, Dikai Guan, Sangbong Yi
|On-Site Speaker (Planned)
The influence of Zn or Al addition as third alloying element on the deformation mechanisms of Mg-Nd based alloys was investigated by quasi in-situ tension. Distinct mechanical behaviors were observed between Mg - 1.0 Zn - 1.7 Nd (ZN12, in wt.%) and Mg – 1.0 Al – 1.7 Nd (AN12) alloys. The ZN12 alloy showed lower yield strength and higher fracture strain compared to the AN12. A considerable number of slip traces, corresponding to basal and non-basal dislocations, were formed at the early deformation stage of the ZN12 sample. On the contrary, only a few grains in the AN12 sample showed obvious slip traces. Half of the twins were formed after yielding in the ZN12 sample, while the majority of the twins were formed at higher strain in AN12. Twin growth was more obvious in the AN12 sample due to insufficient active deformation modes than in the ZN12 sample.
|Magnesium, Characterization, Mechanical Properties