| 深冷处理对GCr15组织和力学性能的影响 |
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| 引用本文： | 赵国华,于文平,魏建勋. 深冷处理对GCr15组织和力学性能的影响[J]. 材料开发与应用, 2010, 25(1): 26-29 |
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| 作者姓名： | 赵国华 于文平 魏建勋 |
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| 作者单位： | 许昌烟草机械有限责任公司,河南,许昌,461000;中信重工机械股份有限公司热处理厂,河南,洛阳,471039 |
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| 摘 要： | 对经不同深冷处理后的GCr15钢进行了组织观察、力学性能检测和摩擦磨损试验。试验结果表明:深冷处理可提高GCr15钢的硬度;淬火后进行深冷处理+180℃×8h回火处理后,GCr15钢的冲击韧性有所降低;深冷处理可明显提高GCr15钢耐磨性并降低钢中残留奥氏体含量,其中深冷处理6h后效果最为显著,其相对磨损率下降了30%、残留奥氏体含量降幅高达81%。
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| 关 键 词： | 深冷处理(DCT) 硬度 冲击韧性 耐磨性 残留奥氏体 |
Effect of Deep Cryogenic Treatment on Microstructures and Mechanical Propery of GCr15 Steel |
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| ZHAO Guo-hua,YU Wen-ping,WEI Jian-xun. Effect of Deep Cryogenic Treatment on Microstructures and Mechanical Propery of GCr15 Steel[J]. Development and Application of Materials, 2010, 25(1): 26-29 |
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| Authors: | ZHAO Guo-hua YU Wen-ping WEI Jian-xun |
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| Affiliation: | 1.Xuchang Tobacco Machinery Co.Ltd.;Xuchang 461000;China;2.Heat Treatment Plant of CITIC Heavy Industries Co.Ltd.;Luoyang 471039;China |
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| Abstract: | Microstructures, mechanical property, and wear resistance of GCr15 steel with different deep cryogenic treatment （DCT） have been investigated in this paper. The results revealed that the deep cryogenic treatment could improve the hardness of GCr15 steel variously. The impact toughness values of GCr15 steel which were tempered at 180℃ for 8h after deep cryogenic treatment were lower. The wear resistance of GCr15 steel could be enhanced and the remains austenite content decreased obviously by various deep cryogenic treatment. After 6h deep cryogenic treatment, its values of mass lost ratio and remains anstenitic content were decreased significant to 30% and 81%, respectively. |
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| Keywords: | Deep cryogenic treatment(DCT) Hardness Impact toughness Wear resistance Remains austenite |
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