Transactions of Materials and Heat Treatment

Title：Influence of rolling crack and heat treatment process on magnetic property for high silicon electrical steel composite plate

Authors： Ji Shuai Liu Zhongjun

Unit： Xi′an Shiyou University Nanjing Tech University

KeyWords： high silicon electrical steel composite plate hot rolling warm rolling diffusion annealing crack magnetic property

ClassificationCode：G142.7

year,vol(issue):pagenumber：2022,47(2):131-138

Abstract：

After hot rolling and warm rolling deformation processing of casting billet for three-layer high silicon electrical steel composite plate, it was normalized and annealed for heat treatment. Then, the cracks produced during the rolling process were observed, and the magnetic properties of composite plate in different states were also investigated. Furthermore, the samples in different states were subjected to diffusion annealing treatment, and the changes of crack in composite plate and their effects on magnetic property were studied. The results show that the crack sizes inside alloy are obviously different under different heat treatment processes, which has a great influence on the magnetic property of composite plate, and other factors have a small influence compared with the deep crack. In addition, after the warm rolling deformation processing of composite plate, an ordered structure appears in the inner layer which cannot substantially improve the magnetic property of alloy under the premise of deep crack. Finally, the diffusion annealing process can eliminate shallow crack and micro crack inside the composite plate, but it cannot eliminate the larger crack. Thus, the magnetic property of composite plate with deep crack cannot be significantly improved.

Funds：

陕西省自然科学基础研究计划面上项目（2021JM-410）；西安石油大学校青年创新团队基金（2019QNKYCXTD12）

作者简介：姬帅（1985-），男，博士，副教授,E-mail：jishuai029@xsyu.edu.cn

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