热轧硅钢表层动态再结晶区形成规律及剪切织构特征
收稿日期: 2021-04-07
修回日期: 2021-07-18
网络出版日期: 2021-12-13
基金资助
国家自然科学基金项目(51931002)
Formation of Dynamic Recrystallization Zone and Characteristics of Shear Texture in Surface Layer of Hot-Rolled Silicon Steel
Received date: 2021-04-07
Revised date: 2021-07-18
Online published: 2021-12-13
Supported by
National Natural Science Foundation of China(51931002)
将具有柱状晶组织的Fe-2.5Si-0.8Al硅钢铸坯进行了多道次热轧，利用EBSD技术研究表层动态再结晶区的形成规律及剪切织构特征，并确定细晶区内不同剪切取向的分布规律。结果表明，88%压下量下热轧板次表层形成了明显的水平带状动态再结晶细晶区，动态再结晶区被多种剪切取向形变晶粒包围。热轧时，次表层受到较大的剪切力使铜型织构更易出现，造成动态再结晶区内再结晶及附近形变的铜型织构组分均多于黄铜型和Goss剪切织构组分。过大的剪切作用不利于Goss织构的形成和保持，导致动态再结晶区内Goss织构组分的比例很少。黄铜型织构出现在动态再结晶区内及附近的比例相差不大，说明黄铜型织构的形成位置不受限制。在此基础上，将实验室热轧板与98.9%压下量的工业热轧板表层剪切织构进行对比，工业热轧板次表层至接近中心层(次表层与中心层之间位置) Goss织构组分最多。
姜伟宁 , 武晓龙 , 杨平 , 顾新福 , 解清阁 . 热轧硅钢表层动态再结晶区形成规律及剪切织构特征[J]. 金属学报, 2022 , 58(12) : 1545 -1556 . DOI: 10.11900/0412.1961.2021.00145
The texture and microstructure varying between thicknesses of hot-rolled sheets can be inherited to the final recrystallized sheets in silicon steel and affect its magnetic properties. Deformed and dynamic recrystallized microstructures produced in the surface layers during hot rolling bring different shear textures. Based on the study of deformed shear textures in the surface layers of hot-rolled sheets, it is necessary to examine the shear textures in the dynamic recrystallization zone. The cast slabs of Fe-2.5Si-0.8Al silicon steels with columnar grains are hot rolled in multiple passes. This study investigates the formation of dynamic recrystallization zone and characteristics of shear texture using EBSD technique. Consequently, the distribution of different shear textures in the fine grain region is obtained. The results indicate that the dynamic recrystallization zone in the horizontal band appears in the subsurface layer; simultaneously, it is surrounded by deformed grains with different shear textures in hot-rolled sheets with 88% reduction. A Copper texture component easily appears in the sub-surface layer and becomes more than Goss and Brass texture components in dynamic recrystallization zone and the surrounding deformed matrix when subjected to heavy shearing. The Goss texture is weak in the dynamic recrystallization zone. This is because excessive shearing is harmful to the formation and retention of Goss texture. The proportion of Brass texture in the dynamic recrystallization zone is the same as that in the surrounding deformed matrix. Additionally, the shear textures of the laboratory hot-rolled sheets and the industrial hot-rolled sheets with 98.9% reduction are compared. In the industrial hot-rolled sheets, the Goss texture is most from the subsurface to the center layer (in the position between subsurface and center layers).
Key words： silicon steel; columnar grain; shear texture; dynamic recrystallization; hot rolling
| 1 | Calvillo P R, Salazar N, Schneider J, et al. Microstructure characterization by EBSD of hot rolled high-silicon steel [J]. Defect Diffus. Forum, 2008, 273-276: 69 |
| 2 | St?cker A, Schmidtchen M, Kawalla R. Hot rolling simulation for non-oriented electrical steel [J]. AIP Conf. Proc., 2017, 1896: 190021 |
| 3 | Wu X L, Yang P, Gu X F, et al. The influence of normalization temperatures on different texture components and magnetic properties of nonoriented electrical steels [J]. Steel. Res. Int., 2021, 92: 2000361 |
| 4 | Inagaki H, Suda T. The development of rolling textures in low-carbon steels [J]. Texture, Stress, Microstr., 1972, 1: 612480 |
| 5 | Koh P K, Dunn C G. Cold-rolled textures of silicon-iron crystals [J]. JOM, 1955, 7(2): 401 |
| 6 | Zhang N, Yang P, He C X, et al. Effect of {110}<229> and {110}<112> grains on texture evolution during cold rolling and annealing of electrical steel [J]. ISIJ Int., 2016, 56: 1462 |
| 7 | Shao Y Y, Yang P, Mao W M. Analysis on grain boundary effects of columnar grained electrical steel [J]. Acta Metall. Sin., 2014, 50: 259 |
| 7 | 邵媛媛, 杨平, 毛卫民. 电工钢柱状晶热、冷轧时晶界作用分析 [J]. 金属学报, 2014, 50: 259 |
| 8 | Matsuo M, Sakai T, Suga Y. Origin and development of through-the-thickness variations of texture in the processing of grain-oriented silicon steel [J]. Metall. Trans., 1986, 17A: 1313 |
| 9 | Yang P, Shao Y Y, Mao W M, et al. Orientation evolutions during hot rolling of electrical steel containing initial columnar grains [J]. Mater. Sci. Forum, 2012, 702-703: 754 |
| 10 | Shao Y Y, Yang P, Fu Y J, et al. Texture evolution of columnar grains in electrical steel during hot rolling [J]. J. Iron Steel Res. Int., 2013, 20: 99 |
| 11 | Fedoseev A I, Raabe D, Gottstein G. Texture development and simulation of inhomogeneous deformation of FeCr during hot rolling [J]. Mater. Sci. Forum, 1994, 157-162: 1771 |
| 12 | Shimizu Y, Ito Y, Iida Y. Formation of the Goss orientation near the surface of 3 pct silicon steel during hot rolling [J]. Metall. Trans., 1986, 17A: 1323 |
| 13 | Cruz-Gandarilla F, Baudin T, Penelle R, et al. Study of local microstructure and texture heterogeneities in hot rolled CGO Fe-3%Si sheets [J]. Mater. Sci. Forum, 2004, 467-470: 123 |
| 14 | Cruz-Gandarilla F, Penelle R, León H M, et al. A study of local microstructure and texture heterogeneities in a CGO Fe3%Si alloy from hot rolling to primary recrystallization [J]. Mater. Sci. Forum, 2005, 495-497: 483 |
| 15 | Cruz-Gandarilla F, Baudin T, Mathon M H, et al. Characterization of global and local textures in hot rolled CGO Fe3%Si [J]. Mater. Sci. Forum, 2006, 509: 25 |
| 16 | Lobanov M L, Redikul'tsev A A, Rusakov G M, et al. Effect of carbon on texture formation in electrical steel Fe-3% Si under hot rolling [J]. Metal Sci. Heat Treat., 2015, 56: 646 |
| 17 | Mehdi M, He Y L, Hilinski E J, et al. The origins of the Goss orientation in non-oriented electrical steel and the evolution of the Goss texture during thermomechanical processing [J]. Steel Res. Int., 2019, 90: 1800582 |
| 18 | Yan M Q, Qian H, Yang P, et al. Behaviors of brass texture and its influence on Goss texture in grain oriented electrical steels [J]. Acta Metall. Sin., 2012, 48: 16 |
| 18 | 颜孟奇, 钱浩, 杨平 等. 电工钢中黄铜织构行为及其对Goss织构的影响 [J]. 金属学报, 2012, 48: 16 |
| 19 | Mukhopadhyay A, Howard I C, Sellars C M. Finite element modelling of effects of roll gap geometry in hot rolling [J]. Mater. Sci. Technol., 2005, 21: 901 |
| 20 | Jia M X, Lü Y P, Xu L F, et al. The influence of friction on the texture formation of a IF steel during hot rolling in the ferrite region [J]. Steel Res. Int., 2013, 84: 761 |
| 21 | Jiang W N, Wu X L, Yang P, et al. Relationship between the initial {100} textures and the shear textures developed in sheet surface during hot rolling of non-oriented silicon steel [J]. Mater. Charact., 2021, 182: 111534 |
| 22 | Calvillo P R, Reis A C C, Kestens L, et al. Grain refinement by high temperature plane-strain compression of Fe-2%Si steel [J]. Mater. Sci. Forum, 2006, 503-504: 977 |
| 23 | Tsuji N, Tsuzaki K, Maki T. Effects of rolling reduction and annealing temperature on the recrystallization structure of solidified columnar crystals in a 19% Cr ferritic stainless steel [J]. ISIJ Int., 1994, 34: 1008 |
| 24 | Hsun H. Microbands in a rolled Si-Fe crystal and their role in recrystallization [J]. Acta Metall., 1962, 10: 1112 |
| 25 | Yan M Q, Yang P, Jiang Q W, et al. Influence of rolling direction on the texture evolution of Fe-3%Si alloy [J]. Acta Metall. Sin., 2011, 47: 25 |
| 25 | 颜孟奇, 杨平, 蒋奇武 等. 轧制方向对Fe-3%Si合金织构演变规律的影响 [J]. 金属学报, 2011, 47: 25 |
| 26 | Wada T, Matsumoto F, Kuroki K. On the recrystallization of 3%Si-Fe (001)[110] single crystal [J]. J. Jpn. Inst. Met., 1968, 32: 767 |
| 27 | Li Z C, Yang P, Yan M Q, et al. Evolution of microstructure and textures of {100} initial texture in an electrical steel [J]. Chin. J. Stereol. Image. Anal., 2009, 14: 237 |
| 27 | 李志超, 杨平, 颜孟奇 等. 电工钢中{100}织构的演变规律 [J]. 中国体视学与图像分析, 2009, 14: 237 |
| 28 | Park J T, Szpunar J A. Evolution of recrystallization texture in nonoriented electrical steels [J]. Acta. Mater., 2003, 51: 3037 |
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