Co-Fe-Gd合金系非晶形成能力的热力学研究  

Thermodynamic investigation on glass-forming ability of Co-Fe-Gd alloy system

作　　者：王嵬[1] 王楠[1] 张万友[1] 郭博闻 郭翠萍[2] 

机构地区：[1]东北电力大学化学工程学院,吉林吉林132012 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料热处理学报》2013年第12期196-200,共5页Transactions of Materials and Heat Treatment

基　　金：东北电力大学博士科研基金资助(11139)

摘　　要：在Co-Fe-Gd三元系合金体系的热力学优化评估的基础之上,应用CALPHAD技术,研究此三元非晶合金的玻璃形成能力。本文分析了800 K时Co-Fe-Gd合金中各元素含量对非晶形成能力的影响,预测了非晶形成的最优成分,计算过冷液相中的结晶相形成驱动力。通过与部分实验和非晶共晶点准则的比较可见,本文所做的热力学分析对此三元合金的非晶制备具有一定的理论指导意义。Glass-forming ability （GFA） of Co-Fe-Gd amorphous alloys was analyzed on the basis of the thermodynamics description of the ternary alloy sys＇tem by means of CALPHAD technique. This work was aimed at forecasting the optimal composition for glass-forming and calculating the driving forces for the formations of all crystalline phases of the supercooled liquid states. In comparison of some experiments with the deep eutectic point, it is found that this thermodynamics analysis can provide a certain theoretical guiding for fabrication of the ternary amorphous alloy.

关 键 词：Co—Fe—Gd非晶合金 CALPHAD技术 玻璃形成能力 

分 类 号：TG111.3[金属学及工艺—物理冶金]