| Ni对30CrMnSi2钢组织及力学性能的影响 |
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| 引用本文： | 马金伟,安胜利,贾礼,付学义,薛瑞,高占勇.Ni对30CrMnSi2钢组织及力学性能的影响[J].金属热处理,2022,47(11):178-183. |
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| 作者姓名： | 马金伟 安胜利 贾礼 付学义 薛瑞 高占勇 |
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| 作者单位： | 1.内蒙古科技大学 材料与冶金学院, 内蒙古 包头 014010; 2.鄂尔多斯市神东天隆矿山机械设备有限责任公司, 内蒙古 鄂尔多斯 017200; 3.包钢钢联股份有限公司, 内蒙古 包头 014010 |
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| 基金项目： | 鄂尔多斯市科技计划;内蒙古自治区应用技术研究与开发计划(201802022);内蒙古自治区科技厅重点研发和成果转化项目(2022YFHH0098) |
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| 摘 要： | 对不同Ni含量的30CrMnSi2钢低温回火后的组织与性能进行了研究。结果表明,试验钢组织由板条状回火马氏体和M/A岛组成;随着Ni含量的增加,M/A岛明显细化,M/A组织由岛状转变为细长条。冲击断口均为韧性断裂,随Ni含量增加,断口的韧性区域面积增大,等轴韧窝加深,韧窝数量增多,冲击吸收能量增加,Ni含量大于1.0%时,冲击吸收能量的增加趋势减弱。1.0%Ni试验钢的强度最大,韧塑性较好,综合性能最佳。
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| 关 键 词： | 30CrMnSi2钢 Ni含量 板条马氏体 显微组织 力学性能 |
| 收稿时间： | 2022-05-20 |
Effect of Ni on microstructure and mechanical properties of 30CrMnSi2 steel |
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| Ma Jinwei,An Shengli,Jia Li,Fu Xueyi,Xue Rui,Gao Zhanyong.Effect of Ni on microstructure and mechanical properties of 30CrMnSi2 steel[J].Heat Treatment of Metals,2022,47(11):178-183. |
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| Authors: | Ma Jinwei An Shengli Jia Li Fu Xueyi Xue Rui Gao Zhanyong |
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| Affiliation: | 1. College of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China; 2. Ordos City Shendongtianlong Mining Machine Co., Ltd., Ordos Inner Mongolia 017200, China; 3. Baogang Incorporated Company, Baotou Inner Mongolia 014010, China |
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| Abstract: | Microstructure and properties of 30CrMnSi2 steel with different Ni contents after tempering at low temperature were studied. The results show that the microstructure of the tested steel consists of tempered lath martensite and M/A islands. With the increase of Ni content, the M/A islands are significantly refined, and changing from islands to elongated strips. The impact fracture is ductile fracture, with the increase of Ni content, the ductile area of the fracture increases, the equiaxial dimple deepens, the number of dimples increases, and the impact absorbed energy increases. When the Ni content is greater than 1.0%, the increasing trend of impact absorbed energy decreases. The tested steel with 1.0%Ni has the highest strength, good toughness and plasticity, and the best comprehensive properties. |
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| Keywords: | 30CrMnSi2 steel Ni content lath martensite microstructure mechanical properties |
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