Formation of secondary recrystalliztion in columnar-grained high silicon electrical steel
PAN Hong-jiang1，2， QIU Sheng-tao2
（1. Faculty of Materials Science and Engineering， Kunming University of Science and Technology， Kunming 650093， Yunnan， China； 2. National Engineering Research Center of Continuous Casting Technology， China Iron and Steel Research Institute Group， Beijing 100081， China）
Abstract：Secondary recrystallization would remarkably change the microstructure and texture of electrical steel，which further influenced its magnetic properties. The microstructure and texture of cold-rolled columnar-grained high silicon electrical steel were investigated by multiple annealing methods. The occurrence conditions，formation reason and control methods of secondary recrystallization were clarified. The results showed that the temperature of secondary recrystallization was ranged between 850～1 000 ℃. The maximum grain size was obtained in the sample annealed at 900 ℃. The reason for secondary recrystallization was determined to be texture inhibition of initial recrystallization. The normal grain growth was inhibited by low-angle grain boundaries，while the grains with high-angle grain boundaries occurred secondary recrystallization by oriented growth due to high energy （HE） and high grain boundary mobility. When the annealing temperature was higher than 1 000 ℃， the secondary recrystallization could be restrained by increasing heating and cooling rates higher than 5 ℃/min.
潘洪江， 仇圣桃. 柱状晶组织高硅电工钢二次再结晶的形成机理[J]. 钢铁, 2019, 54(5): 47-53.
PAN Hong-jiang1，2， QIU Sheng-tao2. Formation of secondary recrystalliztion in columnar-grained high silicon electrical steel. Iron and Steel, 2019, 54(5): 47-53.
Misao N, Hironori N, Tsunehiro Y. High silicon steel realizing excellent high frequency reactor performance[J]. JEF Technical Report. 2005, 6: 12-17.
[1]
Misao N, Hironori N, Tsunehiro Y. High silicon steel realizing excellent high frequency reactor performance[J]. JEF Technical Report. 2005, 6: 12-17.
[2]
Haiji H, Okada K, Hiratani T, et al. Magnetic properties and workability of 6.5% Si steel sheet[J]. Journal of Magnetism and Magnetic Materials. 1996, 160: 109-114.
[2]
Haiji H, Okada K, Hiratani T, et al. Magnetic properties and workability of 6.5% Si steel sheet[J]. Journal of Magnetism and Magnetic Materials. 1996, 160: 109-114.
[3]
Ros-Ya?ez T, Ruiz D, Barros J, et al. Study of deformation and aging behaviour of iron-silicon alloys[J]. Materials Science and Engineering A. 2007, 447: 27-34.
[3]
Ros-Ya?ez T, Ruiz D, Barros J, et al. Study of deformation and aging behaviour of iron-silicon alloys[J]. Materials Science and Engineering A. 2007, 447: 27-34.
[4]
Wittig J E, Frommeyer G. Deformation and Fracture Behavior of Rapidly Solidified and Annealed Iron-Silicon Alloys[J]. Metallurgical and Materials Transactions A. 2008, 39A: 252-265.
[4]
Wittig J E, Frommeyer G. Deformation and Fracture Behavior of Rapidly Solidified and Annealed Iron-Silicon Alloys[J]. Metallurgical and Materials Transactions A. 2008, 39A: 252-265.
[5]
Fu H D, Zhang Z H, Jiang Y B, et al. Applying the grain orientation dependence of deformation twinning to improve the deformation properties of an Fe-6.5 wt%Si alloy[J]. Journal of Alloys and Compounds. 2016, 689: 307-312.
[5]
Fu H D, Zhang Z H, Jiang Y B, et al. Applying the grain orientation dependence of deformation twinning to improve the deformation properties of an Fe-6.5 wt%Si alloy[J]. Journal of Alloys and Compounds. 2016, 689: 307-312.
[6]
Mo Y K, Zhang Z H, Pan H J, et al. Improved plasticity and cold-rolling workability of Fe-6.5wt%Si alloy by warm-rolling with gradually decreasing temperature[J]. Journal of Materials Science & Technology. 2016, 32: 477-484.
[6]
Mo Y K, Zhang Z H, Pan H J, et al. Improved plasticity and cold-rolling workability of Fe-6.5wt%Si alloy by warm-rolling with gradually decreasing temperature[J]. Journal of Materials Science & Technology. 2016, 32: 477-484.
[7]
Mo Y K, Zhang Z H, Fu H D, et al. Effects of deformation temperature on the microstructure, ordering and mechanical properties of Fe-6.5 wt% Si alloy with columnar grains[J]. Materials Science and Engineering A. 2014, 594: 111-117.
[7]
Mo Y K, Zhang Z H, Fu H D, et al. Effects of deformation temperature on the microstructure, ordering and mechanical properties of Fe-6.5 wt% Si alloy with columnar grains[J]. Materials Science and Engineering A. 2014, 594: 111-117.
[8]
Pan H J, Zhang Z H, Xie J X. The effects of recrystallization texture and grain size on magnetic properties of 6.5 wt% Si electrical steel[J]. Journal of Magnetism and Magnetic Materials. 2016, 401: 625-632.
[8]
Pan H J, Zhang Z H, Xie J X. The effects of recrystallization texture and grain size on magnetic properties of 6.5 wt% Si electrical steel[J]. Journal of Magnetism and Magnetic Materials. 2016, 401: 625-632.
[9]
Pan H J, Zhang Z H, Mo Y K, et al. Strong <001> recrystallization texture component in 6.5 wt% Si electrical steel thin sheets by secondary cold-rolling and annealing[J]. Journal of Magnetism and Magnetic Materials. 2016, 419: 500-511.
[9]
Pan H J, Zhang Z H, Mo Y K, et al. Strong <001> recrystallization texture component in 6.5 wt% Si electrical steel thin sheets by secondary cold-rolling and annealing[J]. Journal of Magnetism and Magnetic Materials. 2016, 419: 500-511.
[10]
Stoyka V, Ková? F, Stupakov O, et al. Texture evolution in Fe-3% Si steel treated under unconventional annealing conditions[J]. Materials Characterization. 2010, 61: 1066-1073.
[10]
Stoyka V, Ková? F, Stupakov O, et al. Texture evolution in Fe-3% Si steel treated under unconventional annealing conditions[J]. Materials Characterization. 2010, 61: 1066-1073.
[11]
Liao C C, Hou C K. Effect of nitriding time on secondary recrystallization behaviors and magnetic properties of grain-oriented electrical steel[J]. Journal of Magnetism and Magnetic Materials. 2010, 322: 434-442.
[11]
Liao C C, Hou C K. Effect of nitriding time on secondary recrystallization behaviors and magnetic properties of grain-oriented electrical steel[J]. Journal of Magnetism and Magnetic Materials. 2010, 322: 434-442.
[12]
Wei G, Mao W M. Abnormal Growth of Goss Grains in Grain-oriented Electrical Steels[J]. Journal of Materials Science and Technology. 2010, 26: 759-762.
[12]
Wei G, Mao W M. Abnormal Growth of Goss Grains in Grain-oriented Electrical Steels[J]. Journal of Materials Science and Technology. 2010, 26: 759-762.
[13]
Fu H D, Zhang Z H, Wu X S, et al. Effects of boron on microstructure and mechanical properties of Fe-6.5 wt.% Si alloy fabricated by directional solidification[J]. Intermetallics. 2013, 35: 67-72.
[13]
Fu H D, Zhang Z H, Wu X S, et al. Effects of boron on microstructure and mechanical properties of Fe-6.5 wt.% Si alloy fabricated by directional solidification[J]. Intermetallics. 2013, 35: 67-72.
[14]
Humphreys J, Hatherly M. Recrystallization and related annealing phenomena (Second Edition)[M]. New York: Pergamon Press, 2003.
[14]
Humphreys J, Hatherly M. Recrystallization and related annealing phenomena (Second Edition)[M]. New York: Pergamon Press, 2003.
[15]
Fang X S, Lin J P, Liang Y F, et al. Effect of Annealing Temperature on Soft Magnetic Properties of Cold Rolled 0.30 mm Thick Fe-6.5wt.%Si Foils[J]. Journal of Magnetics. 2011, 16: 177-180.
[15]
Fang X S, Lin J P, Liang Y F, et al. Effect of Annealing Temperature on Soft Magnetic Properties of Cold Rolled 0.30 mm Thick Fe-6.5wt.%Si Foils[J]. Journal of Magnetics. 2011, 16: 177-180.
[16]
Liu H T, Liu Z Y, Sun Y, et al. Development of λ-fiber recrystallization texture and magnetic property in Fe-6.5 wt% Si thin sheet produced by strip casting and warm rolling method[J]. Materials Letters. 2013, 91: 150-153.
[16]
Liu H T, Liu Z Y, Sun Y, et al. Development of λ-fiber recrystallization texture and magnetic property in Fe-6.5 wt% Si thin sheet produced by strip casting and warm rolling method[J]. Materials Letters. 2013, 91: 150-153.
[17]
Li H Z, Liu H T, Liu Z Y, et al. Characterization of microstructure, texture and magnetic properties in twin-roll casting high silicon non-oriented electrical steel[J]. Materials Characterization. 2014, 88: 1-6.
[17]
Li H Z, Liu H T, Liu Z Y, et al. Characterization of microstructure, texture and magnetic properties in twin-roll casting high silicon non-oriented electrical steel[J]. Materials Characterization. 2014, 88: 1-6.
[18]
Morawiec A. Grain misorientations in theories of abnormal grain growth in silicon steel[J]. Scripta Materialia. 2000, 43: 275-278.
[18]
Morawiec A. Grain misorientations in theories of abnormal grain growth in silicon steel[J]. Scripta Materialia. 2000, 43: 275-278.
[19]
Rajmohan N, Szpunar J, Hayakawa Y. A role of fractions of mobile grain boundaries in secondary recrystallization of Fe-Si steels[J]. Acta Materialia. 1999, 47: 2999-3008.
[19]
Rajmohan N, Szpunar J, Hayakawa Y. A role of fractions of mobile grain boundaries in secondary recrystallization of Fe-Si steels[J]. Acta Materialia. 1999, 47: 2999-3008.
[20]
Homma H, Hutchinson B. Orientation dependence of secondary recrystallisation in silicon-iron[J]. Acta Materialia. 2003, 51: 3795-3805.
[20]
Homma H, Hutchinson B. Orientation dependence of secondary recrystallisation in silicon-iron[J]. Acta Materialia. 2003, 51: 3795-3805.
[21]
Park J, Han K, Woo J, et al. Influence of primary annealing condition on texture development in grain oriented electrical steels[J]. Acta Materialia. 2002, 50: 1825-1834.
[21]
Park J, Han K, Woo J, et al. Influence of primary annealing condition on texture development in grain oriented electrical steels[J]. Acta Materialia. 2002, 50: 1825-1834.
[22]
Hayakawa Y, Kurosawa M. Orientation relationship between primary and secondary recrystallized texture in electrical steel[J]. Acta Materialia. 2002, 50: 4527-4534.
[22]
Hayakawa Y, Kurosawa M. Orientation relationship between primary and secondary recrystallized texture in electrical steel[J]. Acta Materialia. 2002, 50: 4527-4534.
2019, Vol. 54 
