کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1578102 | 1514815 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Microstructure and tensile properties of micro-SiC particles reinforced magnesium matrix composites produced by semisolid stirring assisted ultrasonic vibration Microstructure and tensile properties of micro-SiC particles reinforced magnesium matrix composites produced by semisolid stirring assisted ultrasonic vibration](/preview/png/1578102.png)
Magnesium matrix composites reinforced with micro-SiC particles were fabricated by semisolid stirring assisted ultrasonic vibration with SiC particle size of 1 μm and volume fractions of 3% and 5%, respectively. Compared with as-cast AZ91 alloy, with the addition of the micro-SiC particles grain size of matrix was decreased while most of the phase Mg17Al12 varied from coarse plates to lamellar precipitates in 3 vol.% SiCp/AZ91 composite. Although some dispersed micro-SiC particles were found within the grains, most of the micro-SiC particles were located along grain boundaries in both 3 vol.% and 5 vol.% SiCp/AZ91 composites. The study of the interface between the micro-SiC particle and the alloy matrix suggested that micro-SiC particles bonded well with the alloy matrix without interfacial reaction. The ultimate tensile strength and yield strength of the 3 vol.% SiCp/AZ91 composite were improved while elongation to fracture was almost kept.
► Micro-SiCp/AZ91 composite was fabricated by semisolid assisted ultrasonic vibration.
► Grains of the composites are gradually refined with increasing the volume content.
► Tensile strength of the composite is improved while elongation is almost retained.
Journal: Materials Science and Engineering: A - Volume 528, Issues 29–30, 15 November 2011, Pages 8709–8714