OALib Journal期刊
ISSN: 2333-9721
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sic_w/al-12ti复合材料裂纹扩展的sem原位观察
Keywords: sic_w/ai-12ti,复合材料,裂纹扩展,原位观察
Abstract:
?利用带缺口三点弯曲试样,原位观察了sic品须含量不同的al-12ti基复合材料的裂纹扩展过程结果表明,随sicw增加,裂纹由优先治al3ti颗粒/al界面萌生与扩展转变成在al3tip内部和靠近sicw端部的sicw/al界面萌生与扩展sicw/al-12ti的强化机制以sicw的桥接、拔出和诱导裂纹偏转强化为主,同时,sicw与al3tip起到较好的互补强化作用
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