کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
831466 | 908105 | 2011 | 8 صفحه PDF | دانلود رایگان |
To determine the effects of anomalies on fracture processes of graphite fiber reinforced aluminum composite (Grf/Al), unidirectional Grf/Al specimens embedded with inclusions and aluminum-rich areas (Al-rich) were chosen for bending test. Fracture processes and fracture surfaces of anomaly-embedded specimens were analyzed by scanning electron microscopy in situ observation. The micromechanisms of fracture process are as following: interface layer between inclusions and composite is fractured by stress concentration in front of crack tip, and cracks connect voids in inclusions, resulting in failure of inclusion-embedded specimens immediately. However, Al-rich eases stress concentration in bending specimens and crack is blunted by Al-rich/composite interface debonding and friction during fracture process.
Journal: Materials & Design - Volume 32, Issue 3, March 2011, Pages 1582–1589