Effect of Ce on the Microstructure, High-Temperature Tensile Properties, and Fracture Mode of Strip Casting Non-Oriented 6.5%Si Electrical Steel
文献类型：期刊论文
| 作者 | Li Min1,2; Li Haoze1; Wang Jijie2; Ma Yingche1; Liu Kui1 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 58期号:5页码:637-648 |
| ISSN号 | 0412-1961 |
| 关键词 | non-oriented 6.5%Si electrical steel strip casting rare earth ductility fracture morphology |
| DOI | 10.11900/0412.1961.2021.00115 |
| 通讯作者 | Li Haoze(lihz@imr.ac.cn) |
| 英文摘要 | Non-oriented 6.5%Si electrical steel exhibits excellent high-frequency magnetic properties, such as low iron loss and near-zero magnetostriction. Moreover, the high Si content causes poor deformability due to the solution strengthening effect of Si and the resulting ordering transformations, delaying the commercial application. Strip casting is a near-net forming technology that directly produces thin strips from the melt and reduces the required rolling deformation for the fabrication of thin sheets. This technology could be a viable option for industrializing the production of non-oriented 6.5%Si electrical steel. Despite this, even in the strip casting process, this brittle material is prone to edge cracks. Thus, improving the intrinsic plasticity of strip casting non-oriented 6.5%Si electrical steel is necessary through chemical modification to eliminate the deforming defects. The effect of Ce on the ordered phase of the solidification microstructure, high-temperature tensile properties, and fracture mode of strip casting non-oriented 6.5%Si electrical steel was investigated in this work. The results showed that the addition of Ce introduced high-melting Ce2O2.5S and Ce4O4S3 during strip casting, which promoted heterogeneous nucleation and refined the solidification microstructure of the as-cast strip. The presence of Ce did not affect the ordering condition of the as-cast strip. In decreasing order, the tensile temperatures corresponding to the ordered degree of the as-cast strip were 650, 400, and 800 degrees C. With the tensile temperature increasing, the yield and tensile strengths of the as-cast strip decreased, whereas the elongation gradually increased. When the tensile temperature exceeded 500 degrees C, the purification and microstructure refining effects of Ce improved grain-boundary cohesion and prevented intergranular cracking. Moreover, the occurrences of dynamic recovery and recrystallization eventually made the as-cast strip doped with Ce fractured by dimples, leading to a considerably enhanced tensile ductility. According to the findings, the rare-earth treatment should be considered as an effective method for increasing the ductility of strip casting non oriented 6.5%Si electrical steel. |
| 资助项目 | National Natural Science Foundation of China[51801221] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000787207700005 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/172668]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li Haoze |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Areospace Univ, Coll Mat Sci & Engn, Shenyang 110136, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Min,Li Haoze,Wang Jijie,et al. Effect of Ce on the Microstructure, High-Temperature Tensile Properties, and Fracture Mode of Strip Casting Non-Oriented 6.5%Si Electrical Steel[J]. ACTA METALLURGICA SINICA,2022,58(5):637-648. |
| APA | Li Min,Li Haoze,Wang Jijie,Ma Yingche,&Liu Kui.(2022).Effect of Ce on the Microstructure, High-Temperature Tensile Properties, and Fracture Mode of Strip Casting Non-Oriented 6.5%Si Electrical Steel.ACTA METALLURGICA SINICA,58(5),637-648. |
| MLA | Li Min,et al."Effect of Ce on the Microstructure, High-Temperature Tensile Properties, and Fracture Mode of Strip Casting Non-Oriented 6.5%Si Electrical Steel".ACTA METALLURGICA SINICA 58.5(2022):637-648. |
入库方式： OAI收割
来源：金属研究所
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