摘要
首次采用深过冷加水淬的方法 ,成功地制备了直径为 16mm的样品 ,高为 15mm ,组织中颗粒平均尺寸约为 12 0nm左右的Fe76B12 Si12 合金超细晶材料。其磁损耗P40 01T 和P10 0 01T 分别为普通硅钢片的 40 %和 65 %。系统研究了组织类型及Fe2 B(Si)相尺度对该合金软磁性能的影响 ,发现该合金的最佳软磁性能位于Fe2 B(Si)相完全粒化的非规则共晶组织区 ,并且当Fe2 B(Si)相尺寸细化至 0 .3 6～ 0 .5 0 μm时 ,其软磁性能随着相尺寸的减小而大幅度改善。对以上结果产生的原因进行了讨论。
Ultra-fine crystalline Fe 76B 12Si 12 alloy with a diameter of 16 mm, a height of 15 mm and average grain size of about 120 nm, whose magnetic losses of P 400 1t and P 1000 1t are 40% and 65% of those of conventional silical-steel sheet respectively, were successfully prepared by quenching high under-cooled samples in water.Influences of constituent structure and Fe 2B(Si) phase size on the soft magnetic properties of the alloy are examined. It is found that the optimum soft magnetic properties of the alloy occur in the microstructure zone with second anomalous eutectic and completely granularized Fe 2B(Si) phase.Furthermore, the soft magnetic properties can be significantly improved with the phase size reduction when fined Fe 2B(Si) phase size is less than 0.36～0.50 μm. The mechanism was approached also.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2005年第1期5-7,共3页
Special Casting & Nonferrous Alloys
基金
国家自然科学基金资助重大项目(50 3951 0 3)
江苏省高校自然科学研究计划项目(0 3KJB430 0 4 5)
南京工业大学引进人才科研启动基金项目 (51 30 30 2 1 )
关键词
Fe76B12Si12合金
深过冷
超细晶材料
凝固组织
软磁性能
Fe 76B 12Si 12 Alloy, High Under-Cooled, Ultra-fine Crystalline Materials, Solidification Microstructure, Soft Magnetic Properties
