Correlation Between Magnetic Properties and Allotropic Phase Transition of Fe–Co–V Alloy
来源期刊：Acta Metallurgica Sinica2015年第8期
论文作者：Saeed Hasani Ali Shafyei Morteza Shamanian Peiman Behjati Hossein Mostaan Timu Juuti Jerzy A.Szpunar
文章页码：1055 - 1058
摘 要：In this study, the allotropic phase transition and its effect on the magnetic behavior of Fe Co–7 wt%V alloy were investigated. It was found that c phase is observed in the microstructure in the as-cast condition, and it diminishes after severe cold rolling（90% reduction）. After annealing at temperatures higher than 500 up to 750 ℃, the c phase is observed in the structure, again. But, this phase is disappeared by annealing at temperatures above 750 ℃ due to the formation of vanadium-rich precipitates. Thermocalc software was used in order to elucidate the influence of vanadium percent on the stability of c phase in Fe–Co alloys. Also, magnetic studies showed that the saturation induction is reduced by annealing at temperatures from 500 up to 750 ℃, which is related to the formation of residual non-magnetic γ phase.
Saeed Hasani1，Ali Shafyei1，Morteza Shamanian1，Peiman Behjati1，Hossein Mostaan2，Timu Juuti3，Jerzy A.Szpunar4
1. Department of Materials Engineering, Isfahan University of Technology2. Department of Materials and Metallurgical Engineering,Arak University3. Centre for Advanced Steels Research, University of Oulu4. Department of Mechanical Engineering, University of Saskatchewan
摘 要：In this study, the allotropic phase transition and its effect on the magnetic behavior of Fe Co–7 wt%V alloy were investigated. It was found that c phase is observed in the microstructure in the as-cast condition, and it diminishes after severe cold rolling（90% reduction）. After annealing at temperatures higher than 500 up to 750 ℃, the c phase is observed in the structure, again. But, this phase is disappeared by annealing at temperatures above 750 ℃ due to the formation of vanadium-rich precipitates. Thermocalc software was used in order to elucidate the influence of vanadium percent on the stability of c phase in Fe–Co alloys. Also, magnetic studies showed that the saturation induction is reduced by annealing at temperatures from 500 up to 750 ℃, which is related to the formation of residual non-magnetic γ phase.
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