Effect of Lanthanum Addition on the Microstructure ofMg-4Al Alloy
This research was to determine the effect of rare earth metal (REM) on the as-cast microstructure of Mg-4Al alloy.<br />The rare earth metal used here is Lanthanum to produce Mg-4Al-1.5La alloy. The microstructure was characterized by<br />optical microscopy. The phases of this alloy wer...
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| Format: | article |
| Langue: | EN |
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Al-Khwarizmi College of Engineering – University of Baghdad
2011
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| Accès en ligne: | https://doaj.org/article/6c2a7a19eec948639932407f81ecb6ef |
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| Résumé: | This research was to determine the effect of rare earth metal (REM) on the as-cast microstructure of Mg-4Al alloy.<br />The rare earth metal used here is Lanthanum to produce Mg-4Al-1.5La alloy. The microstructure was characterized by<br />optical microscopy. The phases of this alloy were identified by X-ray diffraction. The microstructure of Mg-4Al<br />consists of α-Mg and grain boundaries with precipitated phase particles. With the addition of Lanthanum, three distinct<br />phases were identified in the X-ray diffraction patterns of the as cast Mg-4Al-1.5La: Mg, Al11La3, Al4La. The Mg17Al12<br />phase was not detected. The addition of Lanthanium increases the hardness and decrease the wear rate of Mg-4Al. |
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