@article{Xiao2022, 
author = {Lirong Xiao and Xuefei Chen and Huiyan Ning and Ping Jiang and Yi Liu and Bin Chen and Dongdi Yin and Hao Zhou and Yuntian Zhu},
title = {Unexpected high-temperature brittleness of a Mg-Gd-Y-Ag alloy},
year = {2022},
journal = {Journal of Magnesium and Alloys},
volume = {10},
number = {9},
pages = {2510-2515},
keywords = {Grain boundary sliding, Formability, Interfacial compounds, High temperature brittleness},
url = {https://www.sciopen.com/article/10.1016/j.jma.2021.06.018},
doi = {10.1016/j.jma.2021.06.018},
abstract = {Rare earth (RE) can produce excellent precipitation hardening in Mg alloys. However, when forming a solid solution, it also deteriorates formability, a problem that can usually be overcome by raising deformation temperature. Here we report an unexpected observation of high temperature brittleness in a Mg-Gd-Y-Ag alloy. As the temperature reached 500 ℃, the formability decreased drastically, leading to severe intergranular fracture under only 0.5% strain. This was caused by failure of grain boundaries, which are weakened by segregated interfacial compounds.}
}