文献类型：期刊文献

英文题名：Vacuum electric arc melting as an alternative route for producing oxide-containing FeCrAl steels: Effects of yttrium addition and solidification behavior

作者：Deng, Siqi He, Mei Wang, Jun Wang, Linzhu Ran, Xing Li, Xiang

第一作者：Deng, Siqi

机构：[1] School of Medicine, Zhejiang University, Zhejiang, Hangzhou, 310058, China; [2] School of Materials and Metallurgy, Guizhou University, Guizhou, Guiyang, 550025, China; [3] AVIC Heavy Machinery Co., Ltd, Guiyang, 550000, China; [4] School of Materials and Energy Engineering, Guizhou Institute of Technology, Guizhou, Guiyang, 550025, China

第一机构：School of Medicine, Zhejiang University, Zhejiang, Hangzhou, 310058, China

通信机构：AVIC Heavy Machinery Co., Ltd, Guiyang, 550000, China

年份：2026

卷号：253

外文期刊名：Vacuum

收录：EI(收录号：20262621019077)

语种：英文

外文关键词：Air purification - Aluminum alloys - Binary alloys - Chromium alloys - Coarsening - Electric arcs - Iron alloys - Melting - Microstructural evolution - Particle size analysis - Precipitation (chemical) - Solidification - Ternary alloys - Vacuum applications - Vacuum technology - Yttrium - Yttrium alloys

摘要：Vacuum electric arc melting was employed to fabricate yttrium-containing FeCrAl steels and clarify the role of yttrium under liquid-state processing conditions. The effects of yttrium addition on chemical composition, second-phase evolution, microstructure, and room-temperature mechanical properties were systematically investigated. Chemical analysis showed that yttrium was effectively retained and significantly reduced the oxygen content, confirming its melt purification effect. The contents of nitrogen, carbon, and sulfur also changed during vacuum arc melting, indicating coupled residual-element evolution. With increasing yttrium content, Y–O–S-rich particles and Y-rich second phases formed, accompanied by changes in particle size and spatial distribution. Moderate yttrium addition promoted melt purification and controlled second-phase formation, whereas excessive addition caused particle coarsening, Y-rich precipitation, and microstructural heterogeneity. The alloy containing 0.2?wt% yttrium showed a relatively favorable combination of strength and hardness, with an ultimate tensile strength of about 410?MPa and a microhardness of about 190 HV. These results indicate that yttrium mainly affects FeCrAl steels through melt purification, residual-element evolution, and second-phase evolution rather than dense nanoscale oxide dispersion strengthening. ? 2026 Published by Elsevier Ltd.