| 压力容器用07MnNiMoDR钢板的低温冲击韧性研究 |
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| 引用本文： | 张海军,高雅,刘利香,刘丹.压力容器用07MnNiMoDR钢板的低温冲击韧性研究[J].河南冶金,2014(1):16-18. |
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| 作者姓名： | 张海军 高雅 刘利香 刘丹 |
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| 作者单位： | 舞阳钢铁有限责任公司,河南舞钢462500 |
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| 摘 要： | 利用金相显微镜和扫描电镜分析了07MnNiMoDR钢板的基体组织和冲击断口形貌,研究了影响钢板板厚1/2位置冲击韧性的根本原因。板厚1/2位置的变形不足导致心部组织粗大,同时有大颗粒碳化物伴生于粗晶粒的晶界,碳化物的存在是影响冲击韧性的根本原因。通过优化轧制和热处理工艺,钢板冲击功值稳定在240 J以上。
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| 关 键 词： | MnNiMoDR 低温韧性 晶粒度 碳化物 |
RESEARCH ON THE LOW TEMPERATURE TOUGHNESS OF 07MnNiMoDR STEEL PLATE FOR PRESSURE VESSELS |
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| Zhang Haijun,Gao Ya,Liu Lixiang,Liu Dan.RESEARCH ON THE LOW TEMPERATURE TOUGHNESS OF 07MnNiMoDR STEEL PLATE FOR PRESSURE VESSELS[J].Henan Metallurgy,2014(1):16-18. |
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| Authors: | Zhang Haijun Gao Ya Liu Lixiang Liu Dan |
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| Affiliation: | (Wuyang Iron and Steel Co. , Ltd) |
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| Abstract: | The microscope and SEM were used to analyze the microstructure of 07MnNiMoDR plate,and the impact fracture morphology was ＇also observed. The essential reason caused low impact toughness of 1/2 position of thickness was studied. The central position of plate was not well deformed in rolling progress and coarse grain was obtained. Moreover,car-bides with large size in grain boundary associated with coarse grain. The existed carbide is the essential reason lowing impact toughness. By optimizing the rolling and heat treatment process,the impact energy is with stable value above 240 J. |
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| Keywords: | 07MnNiMoDR low temperature toughness grain size carbides |
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