| 稀土渣系电渣重熔H13钢铸锭的成分、组织及夹杂物特征 |
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| 引用本文： | 朱健,周文健,张志豪,谢建新. 稀土渣系电渣重熔H13钢铸锭的成分、组织及夹杂物特征[J]. 钢铁研究学报, 2021, 33(9): 966-978. DOI: DOI:10.13228/j.boyuan.issn1001-0963.20200201 |
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| 作者姓名： | 朱健 周文健 张志豪 谢建新 |
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| 作者单位： | 北京科技大学新材料技术研究院,北京 100083;北京科技大学新材料技术研究院,北京 100083;北京科技大学材料先进制备技术教育部重点实验室(MOE),北京 100083 |
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| 摘 要： | 稀土(RE)微合金化是开发高品质模具钢的重要手段之一.采用稀土渣系结合电渣重熔实现H 13钢铸锭的稀土添加,重点对比研究了稀土氧化铝渣系和氧化铝渣系所制备H13钢铸锭的成分、组织及夹杂物特征,揭示了稀土氧化铝渣系对于H13钢铸态组织的稀土改性作用及机制.结果表明,采用稀土氧化铝渣系或稀土氧化钙渣系均可制备稀土质量分数约...
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| 关 键 词： | 稀土渣系 电渣重熔 H13钢 碳化物 La2 O2 S 夹杂物 |
Composition,microstructure and inclusion characteristics of H13 steel ingot by electroslag remelting with rare earth slag |
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| ZHU Jian,ZHOU Wenjian,ZHANG Zhihao,XIE Jianxin. Composition,microstructure and inclusion characteristics of H13 steel ingot by electroslag remelting with rare earth slag[J]. Journal of Iron and Steel Research, 2021, 33(9): 966-978. DOI: DOI:10.13228/j.boyuan.issn1001-0963.20200201 |
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| Authors: | ZHU Jian ZHOU Wenjian ZHANG Zhihao XIE Jianxin |
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| Affiliation: | 1.Institute for Advanced Materials and Technology, University of Science and Technology Beijing，Beijing 100083, China；2.Key Laboratory for Advanced Materials Processing (MOE), University of Science and Technology Beijing， Beijing 100083, China |
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| Abstract: | Rare earth (RE) microalloying has been developed into an important method for high quality die steels. The RE H13 steel ingtos were prepared by electroslag remelting (ESR) process with RE slag. Besides, the composition, structure and inclusion of RE H13 ingots prepared by RE added alumina slag and alumina slag were investigated. Furthermore, the RE modification effect and mechanisms of RE added alumina slag for H13 ingots were revealed. The results indicate that H13 steel ingot with RE content of calculated 0.01 wt.% can be prepared by RE added alumina slag or RE added calcium oxide slag. And the S content of calculated 0.01 wt.% in electrode (raw material) can be notably reduced to 0.005 wt.% and 0.002 wt.%, respectively. The RE H13 ingots consist La enrichment in grain boundary, as well as La2O2S with size of 1.2μm. Compared with the alumina slag, the RE added alumina slag decreases the average size of secondary dendrite from 109.6μm to 84.9μm, as well as the average size of inclusions and liquation carbides from 5.1μm to 3.1μm, which notably improves the homogeneity of H13 ingots. |
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| Keywords: | Key words：rare earth slag electroslag remelting H13 steel liquation carbide La2O2S inclusion |
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