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Effect of Lanthanum Addition on the Microstructure ofMg-4Al Alloy | ||
| Al-Khwarizmi Engineering Journal | ||
| Article 1, Volume 7, Issue 2, 2011, Pages 75-82 | ||
| Author | ||
| Ahmed A. Moosa | ||
| Abstract | ||
| This research was to determine the effect of rare earth metal (REM) on the as-cast microstructure of Mg-4Al alloy.The rare earth metal used here is Lanthanum to produce Mg-4Al-1.5La alloy. The microstructure was characterized byoptical microscopy. The phases of this alloy were identified by X-ray diffraction. The microstructure of Mg-4Alconsists of α-Mg and grain boundaries with precipitated phase particles. With the addition of Lanthanum, three distinctphases were identified in the X-ray diffraction patterns of the as cast Mg-4Al-1.5La: Mg, Al11La3, Al4La. The Mg17Al12phase was not detected. The addition of Lanthanium increases the hardness and decrease the wear rate of Mg-4Al. | ||
| Keywords | ||
| Metallic alloys; magnesium; aluminum; rare earth alloys; Microstructure | ||
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