@article{Hu2024, 
author = {Faping Hu and Tianbo Yu and Hao Chen and Fang Han and Keshun Dai and Fangcheng Qiu and Weidong Xie and Xiaoxu Huang},
title = {Evolution of deformation mechanisms and their orientation dependence in fine-grained Mg-3Gd during tension},
year = {2024},
journal = {Journal of Magnesium and Alloys},
volume = {12},
number = {12},
pages = {5095-5107},
keywords = {Fine-grained Mg alloy, Deformation mechanisms, Orientation dependence, Mechanical property},
url = {https://www.sciopen.com/article/10.1016/j.jma.2024.03.019},
doi = {10.1016/j.jma.2024.03.019},
abstract = {Magnesium alloys usually exhibit poor ductility attributed to their intrinsic hexagonal close-packed (hcp) structure, which fails to provide sufficient independent slip systems for homogeneous deformation. Here we demonstrate that multiple deformation mechanisms can be activated with increasing tensile strain in a fine-grained Mg-3Gd with a weak basal texture. 〈c + a〉 slip, tension twinning and compression/double twinning exhibit a high orientation dependence at an early stage of deformation, whereas the orientation dependence becomes less obvious with further increasing strain. The high work hardening rate at the strain of 2%–5% is accompanied by the significant increase of 〈c + a〉 slip and tension twinning activities. The fine microstructure strongly restricts the activation and growth of twinning, resulting in a slow exhaust of tension twinning and thin compression twins. The restriction of twinning and the activation of profuse 〈c + a〉 slip near grain/twin boundaries, relaxing the stress concentration, sustain the homogeneous deformation to a high strain.}
}