The structure and associated formation mechanism of deformation twins in Cu-Nb alloy
- 10.2991/icmmbe-16.2016.48How to use a DOI?
- deformation twin; nanostructure; mechanical alloying; Cu-Nb alloy
The microstructure and associated formation mechanisms of deformation twins (DTs) in Cu-Nb alloy prepared by mechanical alloying (MA) at room temperature have been investigated by transmission electron microscope (TEM) and high-resolution TEM (HRTEM) observations. The results show that DTs form in Cu grains with sizes around or below 100 nm. Here, two different types of twins have been observed. One type of twins is nucleated via partial dislocation emission from grain boundaries (GBs). A dislocation based model reveals that decreasing grain size and increasing stress concentration benefit the partial dislocation emission. The other type of twins is formed via the splitting and migration of GBs. These twinning mechanisms are totally different with that accessible to coarse-grained Cu.
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Ruoshan Lei AU - Guangruan Chen AU - Mingpu Wang AU - Shiqing Xu AU - Huanping Wang PY - 2016/09 DA - 2016/09 TI - The structure and associated formation mechanism of deformation twins in Cu-Nb alloy BT - Proceedings of the6th International Conference on Mechatronics, Materials, Biotechnology and Environment (ICMMBE 2016) PB - Atlantis Press SP - 245 EP - 248 SN - 2352-5401 UR - https://doi.org/10.2991/icmmbe-16.2016.48 DO - 10.2991/icmmbe-16.2016.48 ID - Lei2016/09 ER -