高强度Fe-Co软磁合金热处理工艺研究  

Heat treatment of high strength Fe-Co soft magnetic alloy

作　　者：韩劲[1] 倪志铭[1] 燕绍九[1] 

机构地区：[1]中航工业北京航空材料研究院,北京100095

出　　处：《金属热处理》2015年第3期126-129,共4页Heat Treatment of Metals

摘　　要：采用真空、氢气保护和氢气磁场工艺对高强度Fe-Co合金进行热处理,并对其热处理后磁性能进行了测试,分析了磁场热处理工艺下,加热温度,保温时间及磁场强度对合金磁性能的影响,同时还研究了热处理降温速率对合金性能的影响。结果表明,施加磁场在较低温度下可以有效提高合金磁性能,尤其是对低磁场下磁感应强度的提升十分有效,在760℃保温2.0 h,充磁200 A,降温速率为300~450℃/h时,可以同时获得较高的磁性能和力学性能,饱和磁感应强度Bs大于2.25 T,矫顽力Hc低于150 A/m,抗拉强度σb超过1000 MPa。High strength Fe-Co soft magnetic alloy was heat treated by vacuum , hydrogen protected and hydrogen protected in a magnetic field.Magentic properties of the heat treated alloy were tested, effects of parameters as temperature, holding time and the magnetic field strength used in magnetic heat treatment on magnetic properties of the alloy were analyzed , and effect of cooling rate on the properties of the alloy was studied.The results show that heat treatment with a magnetic field could improve the magnetic properties of the alloy under relatively lower temperature, especially with the magnetic induction intensity Bs increasing under low magnetic field. When the high strength Fe-Co alloy magnetic heat treated at 760 ℃ for 2.0 h under the condition of 200 A magnetization current and 300-450 ℃/h cooling rate, the alloy obtains comprehensive properties with Bs greater than 2.25 T, Hc lower than 150 A/m and σb more than 1000 MPa.

关 键 词：Fe-Co软磁合金 高强度软磁合金 磁场热处理 

分 类 号：TG156[金属学及工艺—热处理]