CREEP FRACTURE PROCESS COUPLED WITH CAVITATION IN SiC_p-Al COMPOSITE
WANG Daifeng; LI Geyang; LI Pengxing; WU Renjie(State Key Laboratory for MMCs; Shanghai Jiaotong University; Shanghai 200030)(Manuscript received 1995-04-14; in revised form 1995-09-14)
Cite this article:
WANG Daifeng; LI Geyang; LI Pengxing; WU Renjie(State Key Laboratory for MMCs; Shanghai Jiaotong University; Shanghai 200030)(Manuscript received 1995-04-14; in revised form 1995-09-14). CREEP FRACTURE PROCESS COUPLED WITH CAVITATION IN SiC_p-Al COMPOSITE. Acta Metall Sin, 1996, 32(4): 433-437.
Abstract Creep fractured surface of SiC_p-Al composite was quantitatively analyzed by employing image processing technique and solid mechanics principles, and the effective creep strain was determined. It was found that there is exponential relationship between cavity volume fraction and effective creep strain in the vicinity of fracture surface, which elucidates that the cavity growth during tertiary creep stage was controlled by plastic deformation. The presented testing principle and method could be applied to other plastically deformed materials containing cavities. Correspondent: WANG Daifeng,(Institute of Composite Materials, Shanghai Jiaotong University, Shanghai 200030)
