Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1620411 | Journal of Alloys and Compounds | 2010 | 11 Pages |
Abstract
The present work studied the formation of new phases by adding alloying additions (Ca, Sr, and Ce) in AZ31 alloy at micro-levels (approximately 0.2 wt.% per element). Quantitative electron probe micro-analysis (EPMA) was used to identify the compositions of these phases; a comparison in the morphology and distribution of an identical phase in different alloy systems was made; and the thermodynamic software of FactSage⢠was utilized to calculate the possible intermetallic phases during solidification. The results of EPMA showed the existence of phases other than Mg17(Al, Zn)12 and Al8Mn5 in AZ31 alloy, namely: Al2Ca, Al2Sr, Al11Ce3, Al8CeMn4, and Al2(Ca Sr); and these new phases were thermally stable at 450 °C for 10 h. The morphology and distribution of second phases in different alloy systems were self-consistent. These phases were well predicted by FactSage⢠with recent light alloy database.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
L. Shang, I.H. Jung, S. Yue, R. Verma, E. Essadiqi,