Conference paper
Combined effects of source hardening and activation of new slip systems on simultaneous enhancement of strength and ductility in fine-grained Mg-3Gd alloy
Chongqing University1
Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark2
Department of Mechanical Engineering, Technical University of Denmark3
Department of Wind Energy, Technical University of Denmark4
Materials and Surface Engineering, Department of Mechanical Engineering, Technical University of Denmark5
Yield point phenomenon often occurs in fine-grained and ultrafine-grained fcc and bcc metals, which causes a sharp increase in yield stress by source hardening but a rapid decrease in ductility due to the limited work hardening capacity. Here we report that an occurrence of yield point phenomenon in a fine-grained Mg-3Gd alloy can increase the yield stress to a level that facilities the activation of type dislocations and their interactions with type dislocations.
As a result, not only the yield stress but also the tensile ductility are improved that suggests a new strategy overcoming the conventional strength-ductility trade-off.
| Language: | English |
|---|---|
| Publisher: | DTU Mechanical Engineering |
| Year: | 2019 |
| Proceedings: | 40th Risø International Symposium on Material Science: Metal Microstructures in 2D, 3D, and 4D |
| Types: | Conference paper |
| ORCIDs: | Yu, Tianbo and Huang, Xiaoxu |
