| 中碳高硅铸钢的复合热处理工艺 |
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| 引用本文： | 宋春梅,许艳东,蔡民.中碳高硅铸钢的复合热处理工艺[J].佳木斯大学学报,2010,28(1):92-94. |
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| 作者姓名： | 宋春梅 许艳东 蔡民 |
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| 作者单位： | [1]佳木斯大学材料科学与工程学院,黑龙江佳木斯154002 [2]佳木斯供水公司,黑龙江佳木斯154002 |
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| 摘 要： | 研究了成分(wt.%)为0.62C,2.0Si,1.6Mn,0.99Cr的高硅铸钢经过复合热处理(球化退火+等温淬火)的组织和力学性能.利用olympus金相电子显微镜观察组织、扫描电子显微镜分析冲击断口形貌;测试了实验钢的洛氏硬度和冲击韧性.实验结果表明,试样经过球化退火工艺之后硬度变化的幅度不大,而冲击韧性有明显地提高,试样的组织主要为下贝氏体组织,并含有少量的奥氏体.在相同的球化退火工艺下,320℃等温淬火60min,试样的硬度和冲击韧性值都较高.
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| 关 键 词： | 高硅铸钢 球化退火 下贝氏体 冲击韧性 |
Duplex Heattreatment of Medium Carbon High-Si Cast Steels |
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| SONG Chun-mei,XU Yan-dong,CAI Min.Duplex Heattreatment of Medium Carbon High-Si Cast Steels[J].Journal of Jiamusi University(Natural Science Edition),2010,28(1):92-94. |
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| Authors: | SONG Chun-mei XU Yan-dong CAI Min |
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| Institution: | 1.College of Materials Science and Engineering;Jiamusi University;Jiamusi 154007;China;2.Jiamusi Water Supply Company;China |
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| Abstract: | The microstructure and properties of high silicon cast steel samples were investigated after isothermal quenching.The chemical composition of samples(wt.%) was 0.62C,2.0Si,1.6Mn and 0.99Cr.The fracture morphology was analyzed with SEM.The results showed that the hardness of samples after spheroidizing annealing fluctuated a little in amplitude and there was clear improvement in impact toughness.The microstructure of samples was mainly lower bainite and a little retained austenite under spheroidizing anneali... |
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| Keywords: | high silicon cast steel spheroidizing annealing lower bainite impact toughness |
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