Title of article
Precipitation process in a Mg–Gd–Y alloy grain-refined by Al addition
Author/Authors
Dai، نويسنده , , Jichun and Zhu، نويسنده , , Suming and Easton، نويسنده , , Mark A. and Xu، نويسنده , , Wenfan and Wu، نويسنده , , Guohua and Ding، نويسنده , , Wenjiang، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
8
From page
7
To page
14
Abstract
The precipitation process in Mg–10Gd–3Y (wt.%) alloy grain-refined by 0.8 wt.% Al addition has been investigated by transmission electron microscopy. The alloy was given a solution treatment at 520 °C for 6 h plus 550 °C for 7 h before ageing at 250 °C. Plate-shaped intermetallic particles with the 18R-type long-period stacking ordered structure were observed in the solution-treated state. Upon isothermal ageing at 250 °C, the following precipitation sequence was identified for the α-Mg supersaturated solution: β″ (D019) → β′ (bco) → β1 (fcc) → β (fcc). The observed precipitation process and age hardening response in the Al grain-refined Mg–10Gd–3Y alloy are compared with those reported in the Zr grain-refined counterpart.
Keywords
Precipitation , Magnesium alloys , age hardening , Long-period stacking ordered structure
Journal title
Materials Characterization
Serial Year
2014
Journal title
Materials Characterization
Record number
2269237
Link To Document