原位合成ZrC颗粒增强锆基非晶复合材料及力学性能  

SYNTHESIS AND MECHANICAL PROPERTIES OF IN SITU ZrC REINFORCED BULK Zr AMORPHOUS MATRIX COMPOSITES

作　　者：武晓峰[1] 张海峰[1] 邱克强[1] 杨洪才[2] 胡壮麒[1] 

机构地区：[1]中国科学院金属研究所沈阳材料科学国家(联合)实验室,沈阳110016 [2]东北大学材料与冶金学院,沈阳110004

出　　处：《金属学报》2003年第5期555-560,共6页Acta Metallurgica Sinica

基　　金：国家重点基础研究发展规划 G2000067201;国家自然科学基金与上海宝钢集团公司联合50274277资助项目

摘　　要：利用Zr与TiC粉末之间的原位反应经铜模铸造方法制备了ZrC颗粒增强 Zr_(41)Ti_(14)Cu_(12.5)Ni_(10)Be_(22.5)块状非晶复合材料。结果表明:原位合成的ZrC颗粒尺寸细小、形状规整并均匀地分布在非晶基体上.与锆非晶合金相比,复合材料的压缩强度得到提高,塑性得到改善。对ZrC颗粒原位合成及强化机理进行了讨论。ZrC reinforced Zr41Ti14Cu12.5Ni10Be22.5 bulk amorphous matrix composites have been produced by reaction between added TiC and Zr in molten Zr-Ti-Cu-Ni-Be glass-forming allay and by copper mold casting method. The results of optical microscopy, X-ray diffraction, differential scanning calorimetry and scanning electron microscopy show that the reaction-induced crystalline ZrC particles with small size uniformly distribute in amorphous matrix. Compared with pure bulk amorphous alloy, the compressive strength and elongation of the composite are significantly improved. The mechanisms of in situ ZrC particles synthesis and strengthening are discussed.

关 键 词：锫非晶基复合材料 原位合成  ZrC 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程] TG113.25[金属学及工艺—物理冶金]