Ni添加对双辊薄带连铸无取向硅钢组织和性能的影响

    Effects of Ni Addition on Microstructure and Properties of Non-oriented Silicon Steels by Twin-roll Casting Process

    • 摘要: 利用金相电子显微镜OM、XRD和EBSD研究了添加1.0wt%Ni时Ni对双辊薄带连铸3.2wt%Si高强无取向硅钢组织、织构、磁性能和力学性能的影响。结果表明,在相同轧制工艺和退火工艺下,与不添加Ni相比,添加1.0wt%Ni时试验钢形成较强的立方织构、GOSS织构和较弱的γ织构,且晶粒尺寸增大;当采用650~900℃退火2min时,添加1.0wt%Ni的试验钢磁感应强度B50比不添加Ni时高0.01T,铁损P15/50至少低0.5 W/kg,铁损P10/400至少低1.0 W/kg,屈服强度高20 MPa,即Ni元素能改善无取向硅钢的磁性能且能提高屈服强度。

       

      Abstract: The effects of Ni on 3.2wt% Si non-oriented silicon steel microstructure, texture, magnetic performance and mechanical properties were studied when adding 1.0% Ni by OM, XRD and EBSD. The results show that under the same rolling process and annealing process, the test steel with 1.0wt% Ni addition forms stronger cubic texture, GOSS texture and weaker woven texture, and the grain size is larger than that without Ni addition. When the process is annealed at 650-900 ℃for 2 min, the magnetic induction strength B50 of the test steel with 1.0wt% Ni is 0.01 T higher than that without Ni, the iron loss P15/50 is at least 0.5 W/kg lower, the iron loss P10/400is at least 1.0 W/kg lower, and the yield strength is 20 MPa higher, that is, Ni elements can improve the magnetic properties and yield strength of non-oriented silicon steel.

       

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