| 大规格高碳硬线82B拉拔脆断原因分析 |
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| 引用本文： | 张寄东,智建国,吕刚,宿成.大规格高碳硬线82B拉拔脆断原因分析[J].钢铁钒钛,2011,32(3):82-86. |
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| 作者姓名： | 张寄东 智建国 吕刚 宿成 |
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| 作者单位： | 1. 内蒙古科技大学材料与冶金学院,内蒙古包头,014010
2. 内蒙古包钢钢联股份有限公司技术中心,内蒙古包头,014010 |
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| 摘 要： | 采用金相组织检验分析等方法,分析了大规格82B拉拔劈裂脆断问题.结果表明:劈裂断口试样的中心处,由于锰、铬偏析而出现异常的马氏体组织,导致其变形与基体不一致,在拉拔过程中中心马氏体断裂成为裂纹源.断口附近表面存在结疤和擦伤等表面缺陷,中心马氏体和表面缺陷共同导致大规格82B拉拔劈裂脆断.通过优化合金元素锰、铬的成分含量...
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| 关 键 词： | 高碳硬线 82B 拉拔 脆断 马氏体 |
Drawing Brittle Fracture Causes Analysis of Large Gauge High Carbon Steel 82B Wire Rod |
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| Zhang Jidong,Zhi Jianguo,Lü Gang,Su Cheng.Drawing Brittle Fracture Causes Analysis of Large Gauge High Carbon Steel 82B Wire Rod[J].Iron Steel Vanadium Titanium,2011,32(3):82-86. |
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| Authors: | Zhang Jidong Zhi Jianguo Lü Gang Su Cheng |
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| Affiliation: | Zhang Jidong1,Zhi Jianguo2,Lü Gang2,Su Cheng1 (1.School of Material and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,Neimenggu,China,2.Technical Center of Steel Union Co.Ltd.of Baotou Steel(Group) Corp.,China) |
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| Abstract: | The causes of drawing cleavage brittle fracture of large gauge high carbon steel 82B wire rod are analyzed by carrying out metallographic structure inspection and analysis.They are found out as the result of Mn,Cr central segregation causing formation of martensite in the centre of the wire rod,and the center martensite fracture becomes one of the sources of crack in the process of drawing because of the difference of deformation rate between the central part and the other area.There are some defects of sca... |
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| Keywords: | high carbon wire rod 82B drawing brittle fracture martensite |
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