摘要
选取临界形成能的Fe_(82+x)Si_(1)B_(12)C_(5-x)(x=0,1)合金,采用单辊熔融纺丝法,通过调整辊速(20 m/s和40 m/s)制备了不同自由面状态的非晶带材,并对其进行不同温度的去应力退火处理。利用X射线衍射仪、差示扫描量热仪、透射电镜及直流软磁测量装置对非晶带材的微观结构、热稳定性和磁性能进行了分析。结果表明,提高辊速,带材非晶化程度增加,且铁含量越高,非晶合金的晶化焓越高。在辊速为40 m/s下获得的铸态x=0带材为非晶结构,x=1非晶带材自由面出现晶化。经340℃退火处理后,x=1非晶带材表面形成单层晶化结构,该结构降低x=1非晶带材的钉扎场,使x=1非晶带材的矫顽力降至4.7 A/m,磁性能提升。
Fe_(82+x)Si_(1)B_(12)C_(5-x)(x=0,1)alloys located at the critical formation energy boundary were selected for investigation,and the amorphous ribbons with varying free surface states were fabricated by using the single-roller melt-spinning technique and adjusting the roller speed(20 m/s and 40 m/s),followed by stress relief annealing at different temperatures.The microstructure,thermal stability,and magnetic properties of the resulting amorphous ribbons were systematically characterized via X-ray diffraction,differential scanning calorimetry,transmission electron microscope,and direct current soft magnetic measurements.The results indicate that increasing the roller speed leads to a higher extent of amorphization,and the higher the iron content,the greater the crystallization enthalpy of the amorphous alloy.At roller speed of 40 m/s,the as-cast ribbon(x=0)exhibits an amorphous structure,and the free surface of the amorphous ribbon(x=1)undergoes partial crystallization.After annealing at 340℃,a single-layer crystalline phase forms on the surface of the ribbon(x=1),resulting in a reduction of the pinning field,a decrease of coercivity to 4.7 A/m and an increase of magnetic properties.
作者
闫胜男
廉洁
黎文强
王登峰
张锁
王坦
Yan Shengnan;Lian Jie;Li Wenqiang;Wang Dengfeng;Zhang Suo;Wang Tan(School of Mechanical and Electrical Engineering&Intelligent Manufacturing,Henan Open University,Zhengzhou Henan 450008,China;Henan Coal Science Academy Wear-resistant Technology Co.,Ltd.,Zhengzhou Henan 450001,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou Henan 450001,China)
出处
《金属热处理》
北大核心
2025年第12期211-217,共7页
Heat Treatment of Metals
基金
河南开放大学博士科研启动基金(BSJH-2024-08)
国家自然科学基金青年科学基金(52101203)
河南省科技攻关项目(252102210040,252102220029)
河南省高等学校重点科研项目(26B413008)。
关键词
铁基非晶合金
表面晶化
钉扎场
磁性能
热稳定性
Fe-based amorphous alloys
surface crystallization
pinning field
magnetic properties
thermal stability
