| 引用本文: | 刘松涛,陈炜,周茂华,唐佳丽,刘斌,付建勋.102Cr17Mo轴承钢碳化物解析[J].材料科学与工艺,2026,(1):43-52.DOI:10.11951/j.issn.1005-0299.20240140. |
| LIU Songtao,CHEN Wei,ZHOU Maohua,TANG Jiali,LIU Bin,FU Jianxun.Analysis of carbide in 102Cr17Mo bearing steel[J].Materials Science and Technology,2026,(1):43-52.DOI:10.11951/j.issn.1005-0299.20240140. |
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| 102Cr17Mo轴承钢碳化物解析 |
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刘松涛1,2,陈炜3,周茂华3,唐佳丽3,刘斌1,4,付建勋1,2
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(1.上海大学 材料科学与工程学院 先进凝固技术中心,上海 200444;2.省部共建高品质特殊钢冶金与制备国家重点实验室(上海大学),上海 200444;3.攀钢集团四川长城特殊钢有限责任公司, 四川 江油 621000;4.鞍钢集团北京研究院,北京 102200)
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| 摘要: |
| Cr17Mo钢属于高碳高铬马氏体轴承钢,钢中碳化物的形貌及分布对其性能有重要影响。本文依托于某厂的102Cr17Mo铸坯,用光学显微镜、扫描电镜、夹杂物三维刻蚀仪等设备对其进行解析。结果表明:102Cr17Mo铸坯中碳化物的形态从边部到心部发生变化,依次为块状、长条状、团聚状,从边部至心部碳化物析出的连续性增强、团聚程度加重；铸坯碳化物密度分布在1 051~1 649 个/mm2之间,碳化物平均等效直径集中分布在8.2~15.0 μm范围内,碳化物面积占比在3.74%~6.29%；从铸坯边部至心部,碳化物密度整体呈现下降趋势,碳化物平均等效直径逐渐增大,碳化物面积占比逐步升高；铸坯中碳化物的相共有3类: MC型碳化物、大尺寸M7C3型碳化物以及小颗粒球状M23C6型碳化物。 |
| 关键词: 102Cr17Mo 轴承钢 碳化物 二维形貌 三维形貌 |
| DOI：10.11951/j.issn.1005-0299.20240140 |
| 分类号:TG142.1 |
| 文献标识码:A |
| 基金项目:国家自然科学基金资助项目(52074179). |
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| Analysis of carbide in 102Cr17Mo bearing steel |
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LIU Songtao1,2, CHEN Wei3, ZHOU Maohua3, TANG Jiali3, LIU Bin1,4, FU Jianxun1,2
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(1.Center for Advanced Solidification Technology, School of Materials Science and Engineering,Shanghai University, Shanghai 200444, China;2.State Key Laboratory of Advanced Special Steel(Shanghai University), Shanghai 200444, China;3. Pangang Group Sichuan Great Wall Special Steel Co., Ltd., Jiangyou 621000, China; 4. Beijing Research Institute of Anshan Iron and Steel Group, Beijing 102200, China)
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| Abstract: |
| Cr17Mo steel belongs to a high-carbon, high-chromium martensitic bearing steel, and the morphology and distribution of carbides in steel have important effects on its properties. In this paper, 102Cr17Mo cast billet from a specific factory was analyzed by optical microscope, scanning electron microscope and three-dimensional inclusions etching apparatus.The results show that the morphology of carbide in 102Cr17Mo casting billet from edge to core is blocky, long and agglomerative.The continuity of carbide precipitation increased from edge to core, accompanied by a greater degree of agglomeration. The density of carbide ranged from 1 051 to 1 649 mm-2, with an average equivalent diameter of carbide between 8.2 and 15.0 μm, and the proportion of carbide area varies between 3.74% and 6.29%. From the edge to the core of the billet, there is an overall decreasing trend in carbide density, while the average equivalent diameter of the carbides gradually increases, and the area fraction of carbides progressively rises.There are three types of carbides in the casting billet: MC carbides, large size M7C3 carbides and small particle spherical M23C6 carbides. |
| Key words: 102Cr17Mo bearing steel carbide two-dimensional morphology three-dimensional morphology |
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