| 400MPa级超细晶粒钢焊接接头的低温韧性 |
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| 引用本文： | 郭魁文,朱健,王秉新.400MPa级超细晶粒钢焊接接头的低温韧性[J].辽宁石油化工大学学报,2009,29(3):48-51. |
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| 作者姓名： | 郭魁文 朱健 王秉新 |
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| 作者单位： | 1. 抚顺市特种设备监督检验所,辽宁抚顺,113006
2. 辽宁石油化工大学机械工程学院,辽宁抚顺,113001 |
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| 摘 要： | 利用CO2+Ar气体保护焊,分别采用单道焊接和双道焊接工艺对厚度为8 mm的400 MPa级超细晶粒钢钢板进行了焊接,采用系列冲击试验方法对焊接接头的低温韧性进行了研究。试验结果表明,在焊接接头中,焊逢位置低温韧性较差。由于双道焊较小的热输入,减小了焊缝及热影响区组织粗化,其焊接接头的低温韧性好于单道焊,并使热影响区面积变小。
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| 关 键 词： | 超细晶粒钢 焊接 晶粒长大 韧脆转变温度 |
Low-Temperature Toughness for Weld Joint of 400 MPa Ultrafine Grained Steel Strip |
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| GUO Kui-wen,ZHU Jian,WANG Bing-xin.Low-Temperature Toughness for Weld Joint of 400 MPa Ultrafine Grained Steel Strip[J].Journal of Liaoning University of Petroleum & Chemical Technology,2009,29(3):48-51. |
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| Authors: | GUO Kui-wen ZHU Jian WANG Bing-xin |
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| Affiliation: | 1.Fushun Fspecial Equipment Supervision Test Institute;Fushun Liaoning113006;P.R.China;2.School of Mechanical Engineering;Liaoning University of Petroleum & Chemical Technology;Fushun Liaoning 113001;P.R.China |
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| Abstract: | The 400 MPa ultrafine grained steel strip with thickness of 8 mm was connected by CO2+Ar arc welding under single-pass welding and double-pass welding,and the low-temperature toughness for weld joints was investigated by series impact test.The experimental results show that the low-temperature toughness for weld is worse among the weld joint.The low-temperature toughness for weld joint by double-pass welding is better than that of single-pass welding,and its heat affected zone(HAZ) is decreased because smal... |
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| Keywords: | Ultrafine grained steel Welding Grain growth Ductile-brittle transition temperature |
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