江苏大学学报（自然科学版）2011，Vol.32Issue(4)：456-459,4.DOI:10.3969/j.issn.1671-7775.2011.04.016
稀土钇及复合稀土对Al3Ti/7055复合材料微观组织的影响
Effects of Y and multiple rare earth addition on microstructures of Al3Ti/7055 composites
摘要
Abstract
In-situ Al3 Ti/7055 composites were synthesized by direct melt reaction method in A1 -K2 TiF6 system. The preparation technics was discussed and the effects of Mg, Y (0. 25% ) and multiple rare earth (0.1% Y +0.15%Ce) addition on microstructures of Al3 Ti/7055 composites were investigated by X-ray diffraction and scanning electron microscope. The results show that the morphology and size of Al3Ti reinforcement are influenced significantly by Mg, and the optimal preparation process is composition with latter Mg alloying. The Al3Ti precipitation during solidification process are restrained by 0. 25% Y addition, and lead in the uniform of Al3Ti size and morphology. The morphology of Al3Ti mainly is shot-rod like. The radial growth of Al3Ti is strongly restrained by rare earth composite addition, and the main morphology is slender-rod like.关键词
Al3Ti/7055复合材料/原位合成/稀土元素/增强相/微观组织Key words
Al3Ti/7055 composites/ in situ synthesis/ rare earth/ reinforcement/ micrestructure分类
矿业与冶金引用本文复制引用
陈登斌,赵玉涛,祝海燕,郑梦,陈刚,张钊..稀土钇及复合稀土对Al3Ti/7055复合材料微观组织的影响[J].江苏大学学报（自然科学版）,2011,32(4):456-459,4.基金项目
国家自然科学基金资助项目(50971066) （50971066）
江苏省科技支撑计划项目(BE2009127) （BE2009127）
江苏省“333人才工程”项目(苏教办师[2008]46号) （苏教办师[2008]46号）
