| 稀土Ce对H13钢CCT曲线的影响 |
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| 引用本文： | 徐祺昊,杨礼林,夏明,秦晨,赵莉萍.稀土Ce对H13钢CCT曲线的影响[J].金属热处理,2022,47(7):197-202. |
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| 作者姓名： | 徐祺昊 杨礼林 夏明 秦晨 赵莉萍 |
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| 作者单位： | (内蒙古科技大学 材料与冶金学院, 内蒙古 包头 014010 |
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| 基金项目： | 新型稀土模具钢的研究与开发(201/0902062001);内蒙古科技大学创新基金(2019QDL-B05) |
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| 摘 要： | 通过测定无Ce和添加0.026%Ce的H13热作模具钢的连续冷却转变(CCT)曲线,研究了稀土元素Ce对H13钢CCT曲线的影响。结果表明,0.026%Ce加入H13钢中可起到净化钢液、改善组织、细化晶粒和消除未溶碳化物的作用,并使珠光体转变和贝氏体转变曲线左移,珠光体相变和贝氏体相变提前,珠光体(A+P+C)和贝氏体(A+B+C)转变区域变大,马氏体(A+M+C)转变区域相应缩小。Ce的加入使H13钢的硬度增大,且硬度随冷却速度的增加而增大。
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| 关 键 词： | H13钢 CCT曲线 稀土元素Ce 显微组织 |
| 收稿时间： | 2022-01-27 |
Effect of rare earth Ce on CCT curves of H13 steel |
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| Xu Qihao,Yang Lilin,Xia Ming,Qin Chen,Zhao Liping.Effect of rare earth Ce on CCT curves of H13 steel[J].Heat Treatment of Metals,2022,47(7):197-202. |
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| Authors: | Xu Qihao Yang Lilin Xia Ming Qin Chen Zhao Liping |
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| Affiliation: | School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China |
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| Abstract: | Effect of rare earth element Ce on continuous cooling transformation (CCT) curves of hot work die steel H13 was studied by measuring the CCT curves of the H13 steels without Ce and with 0.026%Ce. The results show that the addition of 0.026%Ce into the H13 steel can purify molten steel, improve microstructure, refine grains and eliminate undissolved carbides. Meanwhile, the addition of 0.026%Ce causes the transformation curve of pearlite and bainite to shift to the left, advances the pearlite phase transformation and bainite transformation, enlarges the transformation area of pearlite (A+P+C) and bainite (A+B+C), and reduces the transformation area of martensite (A+M+C) correspondingly. The hardness of the H13 steel increases with the addition of Ce, and also increases with the increase of cooling rate. |
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| Keywords: | H13 steel CCT curves rare earth element Ce microstructure |
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