| 400MPa级超细晶粒钢电弧焊焊接接头组织与性能 |
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| 引用本文： | 赵洪运,王国栋,刘相华,杜林秀.400MPa级超细晶粒钢电弧焊焊接接头组织与性能[J].金属热处理,2005,30(8):8-10. |
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| 作者姓名： | 赵洪运 王国栋 刘相华 杜林秀 |
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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,110004;长春工业大学,材料学院,吉林,长春,130012;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,110004 |
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| 摘 要： | 采用普通电弧焊方法（手工电弧焊、二氧化碳气体保护焊、埋弧焊）对400MPa级超细晶粒钢进行焊接，并对不同工艺条件下的焊接接头的组织与性能进行了分析。结果表明，400MPa级超细晶粒钢电弧焊焊接接头热影响区存在着明显的晶粒长大现象；手工电弧焊和埋弧焊焊接接头性能明显下降，而二筘化碳气体保护焊焊接接头性能下降不明显。根据试验结果，实际生产中可以利用二氧化碳气体保护焊方法焊接400MPa级超细晶粒钢。
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| 关 键 词： | 超细晶粒钢 热影响区 焊接接头 |
| 文章编号： | 0254-6051（2005）08-0008-03 |
| 收稿时间： | 2005-03-29 |
| 修稿时间： | 2005-03-29 |
Microstructure and Mechanical Properties of the Arc Welded Joint of 400MPa Grade Ultrafine Grained Steel |
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| ZHAO Hong-yun,WANG Guo-dong,LIU Xiang-hua,DU Lin-xiu.Microstructure and Mechanical Properties of the Arc Welded Joint of 400MPa Grade Ultrafine Grained Steel[J].Heat Treatment of Metals,2005,30(8):8-10. |
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| Authors: | ZHAO Hong-yun WANG Guo-dong LIU Xiang-hua DU Lin-xiu |
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| Affiliation: | 1.State Key Lab of Rolling and Automation, Northeastern University, Shenyang Liaoning 110004, China; 2. Shool of Materials, Changchun University of Technology, Changchun Jilin 130012, China |
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| Abstract: | Some conventional arc welding experiments,such as manual arc welding,carbon dioxide welding and submerged arc welding,were carried out on 400MPa grade ultrafine grained steel.The microstructure and mechanical properties of the 400MPa ultrafine grained steel in welded joint were tested and analyzed.The results show that the grain size grows up obviously in the heat affected zone(HAZ)of all the arc welded joints,the mechanical properties of the arc welded joints by manual arc welding and submerged arc welding decrease greatly,but these of the welded joints by carbon dioxide welding decrease slightly.Based on the test results,the carbon dioxide welding can be used to weld 400MPa grade ultrafine grained steel directly in manufacture. |
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| Keywords: | ultrafine grained steel heat affected zone(HAZ) welded joint |
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