| 9Ni钢焊接热影响区组织转变规律的研究 |
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| 引用本文： | 严春妍,李午申,白世武,薛振奎. 9Ni钢焊接热影响区组织转变规律的研究[J]. 材料工程, 2010, 0(2) |
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| 作者姓名： | 严春妍 李午申 白世武 薛振奎 |
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| 作者单位： | 河海大学,机电工程学院,江苏,常州,213022;天津大学,材料科学与工程学院,天津,300072;中国石油天然气管道科学研究院,河北,廊坊,065000 |
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| 摘 要： | 采用热模拟技术研究了液化天然气储罐用9Ni钢焊接热影响区的组织转变规律。实验结果表明,9Ni钢经历热循环后的显微组织类型包括贝氏体和马氏体两种。低冷却速度条件下,9Ni钢经历热循环后的主要转变产物为贝氏体(包括粒状贝氏体和上贝氏体两种类型);随着冷却速度的提高,组织类型由粒状贝氏体向上贝氏体转化。高冷却速度条件下,经历热循环后的转变产物为马氏体。
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| 关 键 词： | 9Ni钢 组织转变 热影响区 |
Study on Phase Transformation in Welding Heat Affected Zone of 9Ni Steel |
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| YAN Chun-yan,LI Wu-shen,BAI Shi-wu,XUE Zhen-kui. Study on Phase Transformation in Welding Heat Affected Zone of 9Ni Steel[J]. Journal of Materials Engineering, 2010, 0(2) |
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| Authors: | YAN Chun-yan LI Wu-shen BAI Shi-wu XUE Zhen-kui |
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| Affiliation: | 1 College of Mechanical and Electrical Engineering;Hohai University;Changzhou 213022;Jiangsu;China;2 School of Material Science and Engineering;Tianjin University;Tianjin 300072;3 Pipeline Research Institute of CNPC;Langfang 065000;Hebei;China |
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| Abstract: | Thermal simulation with Gleeble was performed to investigate phase transformation in the heat affected zone of 9Ni steel for liquefied natural gas storage tanks.Results showed that bainite and martensite might be obtained after experiencing heat cycles.With low cooling rates,a mainly bainitic microstructure(including granular bainite and upper bainite) developed after experiencing heat cycles.When cooling rate increased,granular bainite was more likely to generate than upper bainite.With high cooling rates,... |
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| Keywords: | 9Ni steel phase transformation heat affected zone |
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