| 9Cr5MoV钢的磁性分析与深冷处理 |
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| 引用本文： | 孙世清,梁文瑞,张楠.9Cr5MoV钢的磁性分析与深冷处理[J].河北科技大学学报,2013,34(1):75-78. |
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| 作者姓名： | 孙世清 梁文瑞 张楠 |
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| 作者单位： | 河北科技大学材料科学与工程学院 |
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| 基金项目： | 河北省科技支撑计划项目(07212119D-2) |
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| 摘 要： | 采用SLX-80深冷处理系统对9Cr5MoV钢进行冷处理,采用综合物理测试系统的振动样品磁强计选件(PPMS-VSM)测试样品的室温磁性。钢在930℃淬火态、-80℃和-120℃冷处理态,样品中残余奥氏体含量分别为13.5%,11.7%和10.1%,深冷处理(-120℃)较冷处理(-80℃)能更有效地减少钢中残余奥氏体。950℃淬火态钢测得最大硬度值(65HRC),淬火后-120℃深冷处理可使钢的硬度值提高至66HRC。950℃淬火再140℃低温回火后,-120℃深冷处理可使钢的硬度提高约1HRC。
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| 关 键 词： | 冷轧辊 深冷处理 残余奥氏体 磁性 硬度 |
| 收稿时间： | 2012/7/19 0:00:00 |
| 修稿时间： | 2012/11/27 0:00:00 |
Magnetic analysis and deep cryogenic treatment of 9Cr5MoV steel |
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| SUN Shiqing,LIANG Wenrui and ZHANG Nan.Magnetic analysis and deep cryogenic treatment of 9Cr5MoV steel[J].Journal of Hebei University of Science and Technology,2013,34(1):75-78. |
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| Authors: | SUN Shiqing LIANG Wenrui and ZHANG Nan |
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| Institution: | (School of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang Hebei 050018,China) |
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| Abstract: | SLX-80 cryogenic treatment system is used for cryogenic treatment of 9Cr5MoV steel,and room temperature magnetization of samples is performed in vibrating sample magnetometer option of physics property measurement system(PPMS-VSM).The contents of retained austenite in the samples quenched at 930 ℃,then cryogenic treated at-80 ℃ and-120 ℃ are respectively 13.5%,11.7% and 10.1%.Compared with cryogenic treatment at-80 ℃,deep cryogenic treatment at-120 ℃ is more effective to reduce the retained austenite in the steel.The maximum hardness of the steel quenched at 950 ℃ is measured to be 65 HRC,while further deep cryogenic treatment at-120 ℃ improves the hardness of steel to 66 HRC.After quenching at 950 ℃ and tempering at 140 ℃,the deep cryogenic treatment at-120 ℃ may enhance the hardness of steel approximately by 1 HRC. |
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| Keywords: | cold roller deep cryogenic treatment retained austenite magnetization hardness |
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