Effect of multi-step annealing with different heating rates on magnetic properties of Fe-Si-B-P-Cu nano-crystalline alloy
Effect of multi-step annealing with different heating rates on magnetic properties of Fe-Si-B-P-Cu nano-crystalline alloy
复制标题
DOI：
10.1088/2053-1591/acaced
复制
发表时间：
2022-12
影响因子：
2.3
通讯作者：
Ziyan Hao;Linzhuo Wei;Y. Cai;Yaocen Wang;Mingliang Xiang;F. Zhao;Yan Zhang;N. Perov;
中科院分区：
文献类型：
--
作者：
Ziyan Hao;Linzhuo Wei;Y. Cai;Yaocen Wang;Mingliang Xiang;F. Zhao;Yan Zhang;N. Perov;
研究了Fe_（83）Si_4 B_8 P_（4.3）Cu_（0.7）非晶合金在不同升温速率下的晶化行为及退火后的磁性。与慢速加热相比，快速加热显著地降低了退火样品的介电常数。发现DSC曲线上第一晶化阶段的峰值温度（Tp 1）是区分α-Fe相形核与长大过程的关键温度参数。当恒速加热温度超过Tp 1时，形核过程基本完成。通过采用不同加热速率的多步退火，确定了在650 K ~ 740 K范围内提高磁性软度所需的高加热速率（400 K min-1）温度范围。快速加热和部分快速加热的缩短的温度窗口可以简化和改善工业上高性能软磁材料的退火工艺。不同升温速率下的多步退火也为研究非晶合金的晶化行为提供了一种很有前途的策略。
The crystallization behaviors of Fe83Si4B8P4.3Cu0.7 amorphous alloy with different heating rates and magnetic softness of annealed alloys have been widely studied. The rapid heating significantly helped with the decrease of coercivity for annealed samples compared with that for slow heating. It is found that the peak temperature (T p1) of the first crystallization stage in DSC curves is a critical temperature parameter to distinguish the nucleation and growth processes of α-Fe phase. When the temperature at a constant heating rate is beyond the T p1, the nucleation process should be almost finished. The necessary temperature range of high heating rate (400 K min−1) for the improvement of magnetic softness has been determined from 650 K to 740 K through multi-step annealing with different heating rates. The shortened temperature window of rapid heating and partial rapid heating may simplify and improve the annealing process of high-performance soft magnetic materials in industry. The multi-step annealing with various heating rates also provides a promising strategy for the investigation of crystallization behaviors of amorphous alloys.