| 9Ni钢薄板的奥氏体化温度及强韧化因素分析 |
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| 引用本文： | 谢章龙,刘振宇,陈俊,徐蓉,王国栋. 9Ni钢薄板的奥氏体化温度及强韧化因素分析[J]. 钢铁研究学报, 2011, 23(9): 37-41 |
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| 作者姓名： | 谢章龙 刘振宇 陈俊 徐蓉 王国栋 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳,110819 |
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| 基金项目： | 国家高技术研究发展计划资助项目(2007AA03Z504) |
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| 摘 要： | 研究了奥氏体化温度对9Ni钢薄板组织性能的影响,并分析了薄板与厚板低温韧性差异的原因。奥氏体化温度高于800℃后,随着奥氏体化温度升高,奥氏体化温度对逆转奥氏体（γ′）的体积分数没有影响;奥氏体化后奥氏体晶粒尺寸减小,晶粒趋于等轴;组织均匀化程度提高;最终组织中取向差大于1 5°区域尺寸减小,低温韧性增加;板条或亚板条...
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| 关 键 词： | 9Ni钢 奥氏体化温度 低温韧性 EBSD 回火马氏体 |
Austenitizing Temperature for 9Ni Steel Thin Plate and Analysis of Strengthening and Toughening Factors |
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| XIE Zhang-long,LIU Zhen-yu,CHEN Jun,XU Rong,WANG Guo-dong. Austenitizing Temperature for 9Ni Steel Thin Plate and Analysis of Strengthening and Toughening Factors[J]. Journal of Iron and Steel Research, 2011, 23(9): 37-41 |
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| Authors: | XIE Zhang-long LIU Zhen-yu CHEN Jun XU Rong WANG Guo-dong |
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| Affiliation: | XIE Zhang-long,LIU Zhen-yu,CHEN Jun,XU Rong,WANG Guo-dong(The State Key Lab of Rolling and Automation,Northeastern University,Shenyang 110819,Liaoning,China) |
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| Abstract: | Influence of austentizing temperature on microstructure and properties of 9Ni steel thin plate was investigated and the causes for inferior cryogenic toughness compared to heavy plate was analyzed. As the austenitizing temperature increased from 800 to 900℃, the volume fraction of reversed austensite was unchanged. The austensite grain size decreased and tended to be equiaxed. The uniformity of microstructure was improved. The cryogenic toughness increased as the zone size decreased which surrounded by higher than 15°misorientation grain boundary. The yield strength decreased as sub-block or lath mean size increased. The lower cryogenic toughness of thin plate was mainly attributed to the less average misorientation. |
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| Keywords: | 9Ni steel austenitizing temperature cryogenic toughness EBSD tempered martensite |
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