Microstructure and Properties of Fe-12Cr-2.5W-xSi-0.4Ti-0.3Y_(2)O_(3)Alloys  

作　　者：孙魁 姚振华 WANG Chaofeng DU Xueming SUN Kui;YAO Zhenhua;WANG Chaofeng;DU Xueming(School of Materials Science and Engineer,Wuhan University of Technology,Wuhan,430070,China)

机构地区：[1]School of Materials Science and Engineer,Wuhan University of Technology,Wuhan,430070,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2023年第4期893-896,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Natural Science Foundation of China(No.51801140);the Fundamental Research Funds for the Central Universities(No.WUT3120619103)。

摘　　要：Fe-12Cr-2.5W-x Si-0.4Ti-0.3Y_(2)O_(3)alloys were fabricated by mechanical alloying and vacuum sintering.The effect of sintering temperature and Si content on the microstructure and properties of the alloy was investigated systematically.The experimental results show that the relative density and tensile strength of the alloy were increased with the elevating of sintering temperature and Si content within a certain range.The alloy with 1wt%Si sintered at 1350℃exhibited superior properties,and the relative density and tensile strength were 96.8%and 692.7 MPa,respectively.HAADF and EDAX analysis of nano-precipitation in the matrix indicated that Si could combine with Y,Ti,and O in the sintering process,which was uniformly distributed with the size of 10 nm.Portion of Y_(2)O_(3)had not completely dissolved in the milling process,which was retained in the matrix of the alloy.

关 键 词：sintering temperature Si content nano-precipitates tensile strength 

分 类 号：TG141[一般工业技术—材料科学与工程]