原位TiB_(2(p))/Fe复合材料的制备及其显微组织  

Study on the Fabrication and Microstructure of In-situ TiB_(2(p))/Fe Composite

作　　者：于波[1] 娄延春[1] 赵芳欣[1] 王景成[1] 苗治全[1] 董峰[1] 刘世昌[1] 

机构地区：[1]沈阳铸造研究所,辽宁沈阳110022

出　　处：《铸造》2003年第6期387-389,共3页Foundry

基　　金：国家863计划项目(2002AA305303)

摘　　要：利用Fe Ti B熔体反应制备了TiB2颗粒增强铁基复合材料,研究了该材料的显微组织。热力学分析表明,Fe Ti B熔体具有反应生成TiB2的可能性。试验结果表明,TiB2颗粒均匀分布于α Fe晶粒中,晶内TiB2粒子平均间距大于晶界。TiB2粒子尺寸大多为1～6μm,形状大多为接近等轴的多面体。A TiB2(p)/Fe composite was fabricated by the reaction of FeTiB melt.Microstructure of the composite was studied.Based on the thermodynamics analysis,it was pointed that the chemical reaction in the FeTiB melt can occur to form TiB2.The results showed that TiB2 particles distribute in αFe grain homogeneously and there is longer mean spacing between TiB2 particles in αFe grain than that at grain boundary.The majority of TiB2 particles are in the range from 1μm to 6μm and the shape of that is near equiaxed polyhedron.

关 键 词：原位TiB2(p)/Fe复合材料 制备 显微组织 颗粒增强金属基复合材料 

分 类 号：TB331[一般工业技术—材料科学与工程]