Fe-Al基金属间化合物的电渣重熔工艺  

Electroslag Refining Processing of iron-aluminium . Based Intermetallic Alloys

作　　者：高德春[1] 杨王玥[1] 陈崇禧 孙祖庆[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《北京科技大学学报》2000年第2期121-123,133,共4页Journal of University of Science and Technology Beijing

基　　金："863"计划资助!715-005-0121

摘　　要：通过适当的非真空冶炼＋电渣重熔工艺，制备了含Ｃｒ的Ｆｅ３Ａ１基金属间化合物合金． 实验发现，选择适当的热输入工艺参数，电渣重熔过程极大地降低了Ｆｅ３Ａ１基金属间化合物合 金中的Ｓ，Ｏ，Ｈ，Ｐ等杂质元素的含量，改善了析出相的大小与分布．铸锭具有良好的热加工性能， 经锻造和中温热机械处理后，纵向室温延伸率分别超过８％和１０％，屈服强度超过４００ＭＰａ，断 裂强度达到 ７００ ＭＰａ，力学性能与同类真空冶炼大体积材料的性能相当．A process route comprising air induction melting (AIM) and electroslag remelting (ESR) for Production of Fe3A1 based containing Cr alloys has been developed. The effect of melting practice on the purity of elements,inclusions and properties is reported. Proper selection and control of Power input during electroslag remelting resulted in clean, sound,homogenous and defect- free ingots. The content of S,O, H,P in the samples were decreased, and the size and distribution of inclusion were changed. After hot forging and thermomechanical process, the longitudinal elongation at room temperature is over 8% and 10% for two kinds of materials, yield strength is over 400 MPa, and ultimate tensile Strength is about 700 MPa. It is more possible to melt Fe3A1 based alloys by ESR.

关 键 词：电渣重熔 非真空冶炼 铁铝基合金 金属间化合物 

分 类 号：TF64[冶金工程—钢铁冶金] TF142