真空退火对1J50软磁合金组织和性能的影响

Effect of vacuum annealing on microstructure and properties of 1J50 soft magnetic alloy

研究了真空退火工艺对1J50软磁合金组织和性能的影响。结果表明,当退火温度为1120~1180℃、保温时间为4~6 h、快冷温度为500~600℃时,1J50软磁合金的磁性能均满足标准要求。随着退火温度的提高,合金的磁导率和饱和磁感应强度相对降低,随着退火时间的延长,合金的磁导率、最大磁导率、饱和磁感应强度相对提高,而矫顽力相对降低,晶粒尺寸逐渐增加,静态力学性能基本无变化。当退火温度为1160℃,保温时间为6 h,快冷温度为550℃时,1J50软磁合金的磁性能较好,H_(c)为4.81 A/m,B_(s)为1.555 T,μ_(0.4)为8.81 mH/m,μ_(m)为91.60 mH/m。

Effect of vacuum annealing process on microstructure and properties of the 1J50 soft magnetic alloy was studied.The results show that the magnetic properties of the 1J50 soft magnetic alloy can meet the technical requirements when the annealing temperature is 1120-1180 ℃,the holding time is 4-6 h and the rapid cooling temperature is 500-600 ℃.With the increase of annealing temperature,the permeability and saturation magnetic induction intensity of the alloy are relatively reduced.With the extension of annealing time,the permeability,maximum permeability and saturation magnetic induction intensity of the alloy are relatively increased,while the coercivity is relatively reduced,the grain size is gradually increased,and the static mechanical properties are basically unchanged.When the annealing temperature is 1160 ℃,holding for 6 h with the rapid cooling temperature at 550 ℃,the magnetic properties of the 1J50 soft magnetic alloy are good,the H_(c) of which is 4.81 A/m,B_(s) is 1.555 T,μ_(0.4) is 8.81 mH/m,and μ_(m) is 91.60 mH/m.