College of Materials Science and Engineering;
Chongqing University;
Chongqing 400045;
China;
Shenyang National Laboratory for Materials Science;
Chongqing University;
Chongqing 400045;
China;
School of Mechanical and Mining Engineering;
The University of Queensland;
St Lucia;
QLD 4072;
Australia;
Mg–xAl–1Sn–0.3Mn alloys; Extrusion; Microstructure; Mechanical properties;