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《Ordnance Material Science and Engineering》 2001-03
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R-CURVE BEHAVIOR OF Al_2O_3 CERAMIC MATRIX COMPOSITES

Lu Jun,Jin Zhihao,Zheng Zhixiang,Ding Houfu Materials Science and Engineering Institute , Hefei University of Technology, Hefei 230009  
The crack-growth-resistance (R-curve ) behavior of Al 2O 3-SiCw and Al 2O 3-TiCp ceramic matrix composites was estimated by the indentation-strength method . The results show that both materials exhibited rising R-curve behavior .and in which the Al 2O 3-SiCw composite displayed better damage tolerance and higher resistance to crack growth .From SEM observation and theoretical analysis ,it was inferred that this phenomenon can be attributed mainly to the microstructure and the toughening mechanism of the materials
【CateGory Index】: TB332
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