高硅电工钢Fe-10%Si和低碳钢Q235复合板轧制过程裂纹演变研究  

Research on Cracks Evolution of High Silicon Electrical Steel Fe-10%Si and Low Carbon Steel Q235 Composite Plate in Rolling Process

作　　者：姬帅[1,2,3,4] 刘忠军 梁凯 高博阳 赵明慧 Ji Shuai;Liu Zhongjun;Liang Kai;Gao Boyang;Zhao Minghui(School of Materials Science and Engineering,Xi'an Shiyou University,Xi’an 710065;State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing Tech University,Nanjing 210009;Key Laboratory of Electromagnetic Processing of Materials,Ministry of Education,Northeastern University,Shenyang 110819;Guangxi Key Laboratory of Information Materials,Guilin University of Electronic Technology,Guilin 541004)

机构地区：[1]西安石油大学材料科学与工程学院,西安710065 [2]南京工业大学材料化学工程国家重点实验室,南京210009 [3]东北大学材料电磁过程研究教育部重点实验室,沈阳110819 [4]桂林电子科技大学广西电子信息材料构效关系重点实验室,桂林541004

出　　处：《特殊钢》2021年第4期1-6,共6页Special Steel

基　　金：国家自然科学基金(51704239);西安石油大学校青年创新团队基金(2019QNKYCXTD12);陕西省自然科学基础研究计划面上项目(2021JM-410);省级科研创新训练项目(S202010705104、S201910705050);材料电磁过程研究教育部重点实验室(东北大学)(NEU-EPM-013);广西电子信息材料构效关系重点实验室(桂林电子科技大学)(201014-K)资助。

摘　　要：对包覆浇铸制备的低碳钢-高硅电工钢-低碳钢三层复合铸坯进行热轧及温轧变形加工,对轧制过程中产生的裂纹及其演变进行研究,同时研究扩散退火工艺对裂纹变化的影响。结果表明,60 mm复合铸坯可以通过热轧及温轧变形减薄至0.5 mm;变形过程中高硅电工钢产生的深裂纹在本质上不受加工工艺的影响,其自身存在属性会保留在复合板内层中;变形过程中产生的普通裂纹受加工过程的影响很大,存在尺寸明显减小的现象;深裂纹及普通裂纹在加工过程中自身周围的合金基体中衍生的微裂纹会在扩散退火过程中得到消除。Low carbon steel-high silicon electrical steel-low carbon steel three layers composite plate prepared by cladding cast has been deformed by process of hot rolling and warm rolling.The formation and evolution of cracks during the plastic process are investigated,and the effect of diffusion annealing on variation of cracks in deforming process is studied.Results show that ingot of composite could be thinned by hot rolling and warm rolling from 60 mm to 0.5 mm.The deep cracks in high silicon electrical steel generated during plastic deformation process are not affected by the processing technique essentialy and their own existence attribute will always be retained in inner layer of the composite.The ordinary cracks produced in the deformation process are greatly affected by the deformed process,and the size decreases obviously.The microcracks generated in the alloy matrix around the deep crack and ordinary crack during the plastic process can be e-liminated in the diffusion annealing process.

关 键 词：低碳钢-高硅电工钢复合板 裂纹 热轧 温轧 扩散退火 

分 类 号：TG335[金属学及工艺—金属压力加工]