| 锻造及热处理工艺对耐磨钢组织及耐磨性能的影响 |
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| 引用本文： | 张衡,张迪,刘馨宇,王晓东,高占勇,陈林.锻造及热处理工艺对耐磨钢组织及耐磨性能的影响[J].金属热处理,2022,47(7):138-143. |
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| 作者姓名： | 张衡 张迪 刘馨宇 王晓东 高占勇 陈林 |
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| 作者单位： | 内蒙古科技大学 材料与冶金学院(稀土学院), 内蒙古 包头 014010 |
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| 基金项目： | 包头市科技计划项目(2019Z3004—1) |
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| 摘 要： | 研究了锻造变形量与热处理工艺对一种新型耐磨钢显微组织、硬度和耐磨性的影响,并用彩色金相法定量分析了钢中马氏体+残留奥氏体含量。结果表明:不同变形量下耐磨钢组织均为贝马复合相,贝氏体板条厚度由30%变形量的524 nm降低到70%变形量的292 nm,马氏体+残留奥氏体体积分数由25.4%增加至41.1%;与直接进行260 ℃等温转变时相比,先在Ms点以上的330 ℃保温5 min,再进行260 ℃等温转变时的贝氏体板条厚度减少了357.2 nm,磨损量降低了0.02 g,且平均摩擦因数由0.311降至0.212。
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| 关 键 词： | 锻造 热处理工艺 耐磨性能 贝马复相组织 |
| 收稿时间： | 2022-02-11 |
Effect of forging and heat treatment on microstructure and wear resistance of wear-resistant steel |
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| Zhang Heng,Zhang Di,Liu Xinyu,Wang Xiaodong,Gao Zhanyong,Chen Lin.Effect of forging and heat treatment on microstructure and wear resistance of wear-resistant steel[J].Heat Treatment of Metals,2022,47(7):138-143. |
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| Authors: | Zhang Heng Zhang Di Liu Xinyu Wang Xiaodong Gao Zhanyong Chen Lin |
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| Affiliation: | School of Materials and Metallurgy(Rare Earth College), Inner Mongolia University of Science and Technology, Baotou Inner Mongolia 014010, China |
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| Abstract: | Effect of forging deformation and heat treatment process on microstructure, hardness and wear resistance of a new wear-resistant steel was studied, and the content of martensite+retained austenite in the steel was quantitatively analyzed by color metallography method. The results show that the wear-resistant steel microstructure under different deformations are all bainite/martensite multiphase, and the thickness of the bainitic lath is reduced from 524 nm to 292 nm as the deformation increases from 30% to 70%, while the volume fraction of martensite +retained austenite increases from 25.4% to 41.1%. After holding at 330 ℃(above the Ms) for 5 min and then 260 ℃ isothermal transformation, and compared with that of direct 260 ℃ isothermal transformation without 330 ℃ holding, the thickness of bainite lath decreases by 357.2 nm, the wear loss decreases by 0.02 g, and the average friction factor decreases from 0.311 to 0.212. |
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| Keywords: | forging heat treatment process wear resistance bainite/martensite multiphase |
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