The microstructure of AlSi7Mg alloy in as cast condition

被引：5
|
作者：
Silesian University of Technology, ul. Krasińskiego 8, Katowice [1 ]
40-019, Poland
不详 [2 ]
02-507, Poland
机构：
来源：
Solid State Phenomena | / 3-10期
关键词：
Scanning electron microscopy - High resolution transmission electron microscopy - Magnesium alloys - Magnesium compounds - Microstructure - Silicon alloys;
D O I：
10.4028/www.scientific.net/SSP.229.3
中图分类号：
学科分类号：
摘要：
The complex microstructure of as-cast AlSi7Mg alloy has been investigated. Microstructure observations were done using light microscopy, scanning electron microscopy and transmission electron microscopy. Chemical composition of the microstructure constituents was investigated by means of energy dispersive spectrometry, conducted both during SEM and STEM investigations. Selected area diffraction was used to identify the phases in the alloy. Microstructure of the alloy in the as-cast condition consists of Al-Si eutectic and intermetallic phases in the interdendritic regions. These are: Mg2Si, α-AlFeMnS, β-AlFeSi and π-AlFeSiMg phases. What is more, number of fine precipitates were found within the α-Al dendrites. Only the occurrence of U1 (MgAl2Si2) phase has been confirmed. © (2015) Trans Tech Publications, Switzerland.
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