کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1579852 | 1001233 | 2010 | 6 صفحه PDF | دانلود رایگان |

Magnesium matrix composites reinforced by graphite particles were fabricated using stir casting with graphite particle size of 50 μm and graphite particle volume fractions of 5, 10, 15 and 20%, respectively. The as-cast composites were extruded at 300 °C with an extrusion ratio of 12:1. The experimental results reveal that the graphite particles play an important role on the tensile properties and damping capacities of the composites. The strength increases with the addition of 5% graphite particles, but decreases with further addition of graphite particles. The strain amplitude independent damping increases significantly as the graphite particle volume fraction increases from 0 to 10%, but almost keeps constant when the volume fraction exceeds 10%. Two damping peaks are found at 150 and 350 °C, respectively. The damping peak around 150 °C is considered to be caused by movable boundary slip, and the damping peak around 350 °C is inferred to be recrystallization peak.
Journal: Materials Science and Engineering: A - Volume 527, Issue 26, 15 October 2010, Pages 6816–6821