预退火时间对Sm_(2)Fe_(17)ZrNb_(0.4)Cu_(0.2)B_(0.2)非晶合金晶化的影响  

Effect of Pre-Annealing Time on Crystallization of Sm_(2)Fe_(17)ZrNb_(0.4)Cu_(0.2)B_(0.2) Amorphous Alloy

作　　者：王婉婷 王书桓 柳昆 张一昆 WANG Wan-ting;WANG Shu-huan;LIU Kun;ZHANG Yi-kun(School of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China;Tangshan Key Laboratory of Special Metallurgy andMaterials Preparation,Tangshan 063210,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210 [2]唐山市特种冶金及材料制备重点实验室,河北唐山063210

出　　处：《稀有金属与硬质合金》2023年第1期65-69,共5页Rare Metals and Cemented Carbides

基　　金：河北省钢铁联合基金项目(E2021209146);河北省高等学校科学技术研究项目(QN2021115);中央引导地方科技发展资金项目(226Z1006G)。

摘　　要：运用高真空电弧熔炼及单辊旋淬一体炉设备,以40 m/s的速度快淬制备出Sm_(2)Fe_(17)ZrNb_(0.4)Cu_(0.2)B_(0.2)非晶合金薄带。为实现非晶合金薄带在较低的晶化温度下爆发性形核,在细化晶粒的同时改善微观组织均匀性,需提高晶化前原子有序度,因此对薄带在500℃下进行不同时间的预退火处理,研究不同预退火时间下非晶合金晶化演变过程。X射线衍射仪(XRD)和高分辨率透射电镜(HRTEM)分析结果表明:长时间的预退火处理对α-Fe相的析出影响较大;预退火温度为500℃时,预退火时间应不超过90 min;预退火时间过长导致晶相提前析出,晶化组织不均匀。Sm_(2)Fe_(17)ZrNb_(0.4)Cu_(0.2)B_(0.2)amorphous alloy ribbons were prepared by fast quenching at the speed of 40 m/s in a high vacuum arc melting and single-roll rotary quenching integrated furnace.In order to realize the explosive nucleation of amorphous alloy ribbons at relatively low crystallization temperature,and refine grains and together improve the uniformity of microstructure,it is necessary to improve the order degree of atoms before crystallization.Therefore,the amorphous alloy ribbons were pre-annealed at 500℃for different time to study the crystallization evolution of the amorphous alloy with different pre-annealing time.The results analyzed by X-ray diffractometer(XRD)and high-resolution transmission microscope(HRTEM)show that long-term pre-annealing treatment has a great influence on the precipitation ofα-Fe phase.When the pre-annealing temperature is 500°C,the pre-annealing time should not exceed 90 min.Too long pre-annealing time leads to the early precipitation of crystal phase and uneven crystallization microstructure.

关 键 词：钐铁系永磁材料 非晶合金薄带 预退火时间 晶化 Α-FE 

分 类 号：TM273[一般工业技术—材料科学与工程]