CAST CRC was established under, and is supported in part by the Australian Government's Cooperative Research Centers scheme. The authors would like to thank Mr Gary Savage, Mr Andy Yob and Ms Maya Gershenzon for operating the high pressure die casting machine and producing the samples. Xiao also gratefully acknowledges the financial support from the China Scholarship Council (CSC).
Casting Defects and Mechanical Properties of High Pressure Die Cast Mg-Zn-Al-RE Alloys†
Article first published online: 26 SEP 2011
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 14, Issue 1-2, pages 68–76, February 2012
How to Cite
Xiao, W., Easton, M. A., Zhu, S., Dargusch, M. S., Gibson, M. A., Jia, S. and Nie, J. (2012), Casting Defects and Mechanical Properties of High Pressure Die Cast Mg-Zn-Al-RE Alloys. Adv. Eng. Mater., 14: 68–76. doi: 10.1002/adem.201100149
- Issue published online: 7 FEB 2012
- Article first published online: 26 SEP 2011
- Manuscript Revised: 4 JUL 2011
- Manuscript Received: 30 MAY 2011
- China Scholarship Council (CSC)
The die casting defects and tensile properties of high pressure die cast (HPDC) Mg-Zn-Al-RE alloys with various combinations of Zn and Al were studied. The results show that die casting defects in Mg-Zn-Al-RE alloys are affected by the percentage of Zn and Al contents. The hot tearing susceptibility (HTS) of Mg-Zn-Al-RE alloys tends to increase with increasing Zn content up to 6 wt%, while a further increase of Al and/or Zn content reduces the HTS. In tensile tests, the yield strength (YS) is generally improved by increasing Zn or Al content, whereas the tensile strength (TS) and ductility appear to depend largely on the presence of casting defects. Compared with Mg-Zn-Al alloys, the mechanical properties of the Mg-Zn-Al-RE alloy are significantly improved. The Mg-4Zn-4Al-4RE alloy is found to have few casting defects and the optimal tensile properties.