TiB_2含量对原位合成TiB_2/Fe基复合材料力学性能的影响  

Effect of TiB_2 Addition on the Tensile Properties of In-situ Synthesized TiB_2/Ferrous Matrix Composites

作　　者：曹卉[1] 刘颖[1] 李兵红[1] 何林[1] 李军[1] 高升吉[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《钢铁钒钛》2009年第4期11-15,共5页Iron Steel Vanadium Titanium

摘　　要：采用X射线衍射(XRD)、光学显微镜(OM)、扫描电镜(SEM)及材料试验机等分析测试手段,研究了TiB2含量对原位合成TiB2/Fe基复合材料的微观结构及拉伸性能的影响。试验结果表明,增强相TiB2颗粒均匀分布于α-Fe基体中,对基体有显著的强化效果;随着TiB2含量的增加,复合材料抗拉和屈服强度也随之增加,而延伸率呈下降趋势。The effect of TiB2 on the tensile properties of in-situ synthesized TiB2 /Ferrous matrix composites was investigated by means of X-ray diffraction（XRD）,optical microscope（OM）,scanning electron microscope（SEM） and materials testing system.The results show that the TiB2 particles are uniformly distributed in the α-Fe matrix,and it demonstrates remarkable reinforcing effect on the matrix.With the increase of TiB2 addition,the tensile strength and yield strength of the composites also increase,but the elongation decline.

关 键 词：原位合成 金属基复合材料 TIB2 微观结构 拉伸性能 

分 类 号：TB331[一般工业技术—材料科学与工程]