| 焊接修复对铁素体不锈钢焊接接头组织和性能的影响 |
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| 引用本文： | 刘琦,张尧,陈增有,马清波,许鸿吉.焊接修复对铁素体不锈钢焊接接头组织和性能的影响[J].大连交通大学学报,2012,33(2):68-72. |
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| 作者姓名： | 刘琦 张尧 陈增有 马清波 许鸿吉 |
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| 作者单位： | 1. 中国北车集团齐齐哈尔车辆(集团)有限责任公司,黑龙江齐齐哈尔,161002
2. 大连交通大学材料学与工程学院,辽宁大连,116028 |
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| 摘 要： | 通过拉伸、弯曲、冲击、硬度、金相组织分析等试验,对不同焊修次数T4003铁素体不锈钢焊接接头的组织和性能进行研究.试验结果表明:焊修一、二次对T4003铁素体不锈钢焊接接头的抗拉、弯曲和冲击性能均影响不大；不同焊修次数T4003铁素体不锈钢焊缝的显微组织为奥氏体+δ铁素体；熔合区的显微组织为铁素体+马氏体,晶粒粗大；母材的显微组织为块状铁素体,沿轧制方向成条状分布.焊接修复对T4003铁素体不锈钢焊接接头的粗晶区宽度、晶粒度与马氏体含量的影响不大.不同焊修次数T4003铁素体不锈钢焊接接头焊缝的显微硬度相近,母材显微硬度大致相同,热影响区显微硬度的变化不大.
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| 关 键 词： | T4003 铁素体不锈钢 焊接接头 焊接修复 组织 力学性能 |
Effect of Repair Welding on the Microstructure and Properties of Ferritic Stainless Steel T4003 Welded Joints |
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| LIU Qi
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ZHANG Yao
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CHEN Zeng-you
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MA Qing-bo
,
XU Hong-ji.Effect of Repair Welding on the Microstructure and Properties of Ferritic Stainless Steel T4003 Welded Joints[J].Journal of Dalian Jiaotong University,2012,33(2):68-72. |
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| Authors: | LIU Qi ZHANG Yao CHEN Zeng-you MA Qing-bo XU Hong-ji |
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| Institution: | 1.CNR Qiqihar Railway Rolling Stock(Group)Co.Ltd,Qiqihar 161002,China;2.School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | Effect of repair welding on the microstructure and properties of ferritic stainless steel T4003 welded joints were studied through tensile,bending and impact tests,hardness examination and microstructure analysis.The results show that different repair times have little effect on the tensile,bending and impact properties.The microstructure of the ferritic stainless steel T4003 welding seam are austenite and δ-ferrite,and the microstructure of the HAZ are ferrite and martensite with coarse grains.The microstructure of the base material are massive ferrite with the grains extending along the rolling direction.Repair welding has little effect on the width of the coarse-grained zone,the grain size and the martensite content.The hardness of the ferritic stainless steel T4003 welding seam by different repair times are almost the same as the base material,and the hardness of the HAZ by different repair times is not changed distinctly. |
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| Keywords: | ferritic stainless steel T4003 welded joint repair welding microstructure mechanical properties |
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