Effect of heating temperature on solid solution behavior of secondary phases of non-oriented silicon steel for high Ni-Ti new energy vehicles

doi:10.13251/j.issn.0254-6051.2021.10.006

Abstract

Abstract: Solid solution behaviors of the secondary phases in non-oriented silicon steel for new energy vehicles at different heating temperatures were studied by means of differential scanning calorimetry (DSC), plasma mass spectrometer and transmission electron microscope. The results show that when heated to 1076.2 ℃, the tested steel undergoes significant phase transformation. Under the condition of holding for 40 min, with the increase of heating temperature, the amount of Nb and Ti elements in solid solution gradually increase, and that in precipitates decrease correspondingly, and most of the precipitates are (Nb,Ti)C. Under different heating temperatures, the average size of the precipitates is different, and it shows an upward trend with the increase of the tested temperature.

Key words: non-oriented silicon steel, new energy vehicles, heating temperature, solid solution, precipitates

CLC Number:

TG142.1

Liu Yang, Jin Zili, Ren Huiping, Ji Lin. Effect of heating temperature on solid solution behavior of secondary phases of non-oriented silicon steel for high Ni-Ti new energy vehicles[J]. Heat Treatment of Metals, 2021, 46(10): 34-38.

References

[1]龚坚, 罗海文. 新能源汽车驱动电机用高强度无取向硅钢片的研究与进展[J]. 材料工程, 2015, 43(6): 102-112.
Gong Jian, Luo Haiwen. Research and development of high strength non-oriented silicon steel sheet for driving motor of new energy vehicle[J]. Materials Engineering, 2015, 43(6): 102-112.
[2]何忠治, 赵宇, 罗海文. 电工钢[M]. 北京: 冶金工业出版社, 2012.
[3]潘振东, 项利, 张晨, 等. 高强度无取向电工钢的研究进展[J]. 机械工程材料, 2014, 38(4): 7-14.
Pan Zhendong, Xiang Li, Zhang Chen, et al. Research progress of high strength non-oriented electrical steel[J]. Mechanical Engineering Materials, 2014, 38(4): 7-14.
[4]陆佳栋, 吴圣杰, 岳重祥, 等. 二次退火温度对无取向硅钢组织和磁性能的影响[J]. 金属热处理, 2021, 46(3): 67-70.
Lu Jiadong, Wu Shengjie, Yue Chongxiang, et al. Effect of secondary annealing temperature on microstructure andmagnetic properties of non-oriented silicon steel[J]. Heat Treatment of Metals, 2021, 46(3): 67-70.
[5]毛卫民, 杨平. 电工钢的材料学原理[M]. 北京: 高等教育出版社, 2013.
[6]吴开明. 无取向电工钢的生产工艺及发展[J]. 中国冶金, 2012, 22(1): 1-5.
Wu Kaiming. Production technology and development of non-oriented electrical steel[J]. China Metallurgical, 2012, 22(1): 1-5.
[7]Kubota T, Fujikura M, Ushigami Y. Recent progress and future trend on grain-oriented silicon steel[J]. Journal of Magnetism and Magnetic Materials, 2000, 215(2): 69-73.
[8]孙明双. 稀土对低温取向硅钢加热过程中溶解行为的影响[D]. 包头: 内蒙古科技大学, 2020.
Sun Mingshuang. Effect of rare earth on dissolution behavior of low temperature oriented silicon steel during heating[D]. Baotou: Inner Mongolia University of Science and Technology, 2020.
[9]董丽丽, 卢晓禹, 杨源远, 等. 短流程CSP和2250 mm轧制生产50W600无取向硅钢组织及性能对比[J]. 金属热处理, 2020, 45(3): 119-122.
Dong Lili, Lu Xiaoyu, Yang Yuanyuan, et al. Comparison of microstructure and properties of 50W600 non-oriented silicon steel produced by CSP short process and 2250 mm rolling process[J]. Heat Treatment of Metals, 2020, 45(3): 119-121.
[10]张净源, 任慧平, 金自力, 等. 新能源汽车用含稀土无取向硅钢生产过程中组织、织构演变[J]. 金属热处理, 2020, 45(10): 99-103.
Zhang Jingyuan, Ren Huiping, Jin Zili, et al. Microstructure and texture evolution of rare-earth non-oriented silicon steel for new energy vehicles during production[J]. Heat Treatment of Metals, 2020, 45(10): 99-103.
[11]李永超, 李娜, 岳尔斌, 等. 高效电机用无取向硅钢退火板组织和析出物研究[J]. 钢铁钒钛, 2011, 32(4): 71-75.
Li Yongchao, Li Na, Yue Erbin, et al. Research on microstructure and precipitates of non-oriented silicon steel sheets after annealing for high-efficiency motor[J]. Iron Steel Vanadium Titanium, 2011, 32(4): 71-75.
[12]郭艳永, 蔡开科. 冷轧无取向硅钢中微细夹杂物的研究[J]. 中国稀土学报, 2004, 22(S1): 498-502.
Guo Yanyong, Cai Kaike. Study on microinclusions in cold rolled non-oriented silicon steel sheet[J]. Journal of the Chinese Rare Earth Society, 2004, 22(S1): 498-502.
[13]孙颖, 李军, 赵宇, 等. 采用低温板坯加热工艺生产的取向硅钢中抑制剂的研究[J]. 钢铁, 2009, 44(5): 64-67.
Sun Ying, Li Jun, Zhao Yu, et al. Experimental research of inhibitors in grain oriented electrical steel prepared by low slab reheating temperature technique[J]. Iron and Steel, 2009, 44(5): 64-67.
[14]鲁峰, 李友国, 桂福生, 等. 热轧终轧温度对冷轧无取向电工钢析出物的影响[J]. 钢铁研究学报, 2002, 14(1): 34-37.
Lu Feng, Li Youguo, Gui Fusheng, et al. Effect of finishing temperature in hot-rolling on precipitates in non-oriented electrical steel[J]. Journal of Iron and Steel Research, 2002, 14(1): 34-37.
[15]王茹玉. 热轧加热温度对3.0% Si无取向硅钢组织及析出物的影响[J]. 电工钢, 2020, 2(2): 11-15.
Wang Ruyu. Effect of hot rolling heating temperature on microstructure and precipitation of 3.0% Si non-oriented silicon steel[J]. Electrical Steel, 2020, 2(2): 11-15.