孕育处理对TiC_p/Fe复合材料组织和性能的影响  

Effects of SiFe75 Inoculation Treatment on the Microstructure and Properties of TiC_p/Fe Composites

作　　者：艾香红[1] 苏广才[1] 李飞龙[1] 李凤仙[1] 孙国进[1] 汤宏群[1] 

机构地区：[1]广西大学机械工程学院

出　　处：《特种铸造及有色合金》2009年第3期255-257,共3页Special Casting & Nonferrous Alloys

基　　金：广西自然科学基金资助项目(桂科自0339002);广西教育厅资助项目(T081028)

摘　　要：对TiCp/Fe复合材料进行了孕育处,分析TiCp/Fe复合材料的组织和性能变化。结果表明,在75SiFe的孕育作用下,组织中的石墨形态由粗片状转化为细片状和短棒状,且分布趋于均匀,这大大降低了石墨对基体的危害作用。经过75SiFe孕育处理后,TiCp/Fe复合材料的晶粒也有所细化,珠光体含量也有所增加,冲击韧度和抗拉强度提高,综合力学性能得到了改善。Effects of SiFe75 inoculation treatment on microstructure and properties of TiCp/Fe composites were investigated.The results indicate that graphite morphology in the microstructure is converted from coarse flake structure into fine flake and short rod structure with tending to uniformly distribute into the microstructure with SiFe75 inoculation treatment,which can greatly reduce the destroying effects of graphite on the matrix.Grain size in TiCp/Fe composites can be slightly refined with SiFe75 inoculation treatment,in which pearlite content is somewhat increased,leading to the increase of impaction toughness and tensile strength as well as improvement of comprehensive mechanical properties.

关 键 词：TICP/FE复合材料 孕育处理 显微组织 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程]