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STRESS CORROSION CRACKING BEHAVIOR OF SiC_p/2024 METAL MATRIX COMPOSITE |
YAO Hongyu (Department of Surfane Science and Corrosion Engineering;University of Science and Technology; Beijing )HUA Yingchun; SONG Yujiu (Xi'an Highway Traffic University ) (Xi'an Jiaotong University )TU Mingjing (Sichuan United University) |
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Abstract By kinetic tests with double cantilever beam (DCB) specimens and slow strain rate tension (SSRT)tests,the stress corrosion cracking (SCC) behavior of SiC. (10pm,15 vo1%)/2024 aluminium mains composite in NaCl solution was investigated. The effect of particulate reinforcement on SCC behavior of this material was discussed. SCC did not occur in both tests in the open circuit condition. However, SCC was observed in the SSRT test under small anodic polarization. Introduction of the particulate reinforcement did not alter the SCC mechanism of intergranular anodic dissolution. The composite exhibited significantly higher SCC resistance than the similarly produced 2024 aluminium alloy. This could be attributed to: 1)the finer grains of matrix of the composite; 2) the strain concentration effect in the mains adjacent to SiC particulates; 3) the hindering effect of the particulates located at the grain boundaries from growing of the intergranular SCC crack.
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Received: 25 June 1996
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Cite this article:
YAO Hongyu (Department of Surfane Science and Corrosion Engineering;University of Science and Technology; Beijing )HUA Yingchun; SONG Yujiu (Xi'an Highway Traffic University ) (Xi'an Jiaotong University )TU Mingjing (Sichuan United University). STRESS CORROSION CRACKING BEHAVIOR OF SiC_p/2024 METAL MATRIX COMPOSITE. J Chin Soc Corr Pro, 1996, 16(3): 206-210.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1996/V16/I3/206
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