Solidification microstructure and phase constitution of Fe-7.5%Mo-16.5%Si ternary quasiperitectic alloy

作     者：LI Li LU XiaoYu CAO ChongDe DAI FuPing 

作者机构：Department of Applied Physics Northwestern Polytechnical University Xi'an 710072 China 

出 版 物：《Chinese Science Bulletin》 (Chinese Science Bulletin)

年 卷 期：2010年第55卷第16期

页      面：1674-1678页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (50571082 and 50871088) the Technology Innovation Fund of Northwestern Polytechnical University the Youth Technology Fund of Northwestern Polytechnical University (W016223) 

主　　题：三元合金 凝固微观组织 硅合金 Fe 差示扫描量热法 液滴直径 宪法 钼 

摘      要：Solidification of Fe-7.5%Mo-16.5%Si ternary quasiperitectic alloy is investigated by using differential scanning calorimetry (DSC) and drop tube containerless processing *** primary phase is identified as R (Fe5Mo3Si2) and the quasiperitectic phases are τ1 (Fe5MoSi4) and *** the decrease of droplet diameter, the cooling rate and undercooling of the droplets in-crease *** experiment result indicates that the solidification microstructure is composed of remnant primary phase, qua-siperitectic phases and ternary eutectic when the droplet diameter exceeds 400 μm, whereas the ternary eutectic is suppressed when the droplet is smaller than 400 μm in diameter.