| X80管线钢埋弧焊用烧结焊剂的研制 |
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| 引用本文： | 张敏,姚成武,李继红,刘斌.X80管线钢埋弧焊用烧结焊剂的研制[J].焊接学报,2006,27(10):29-32. |
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| 作者姓名： | 张敏 姚成武 李继红 刘斌 |
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| 作者单位： | 西安理工大学,材料科学与工程学院,西安,710048 |
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| 摘 要： | 从高强度低合金钢(HSLA)焊缝熔敷金属中的针状铁素体形核机理出发,确定以CaF2-MgO-Al2O3-MnO-TiO2-B2O3氟碱性渣系进行高强韧性埋弧焊烧结焊剂设计.结果表明,焊剂中添加MnO有利于焊缝中Mn元素的过渡,降低?→?温度,从而抑制高温铁素体的生成而对焊缝中针状铁素体的形成有利.由于焊缝金属裂纹敏感指数(Pcm)较高,焊后空冷奥氏体晶粒较细,过量添加MnO,将会导致焊缝中Mn元素过高而细化奥氏体晶粒,使得奥氏体晶界增加.进一步冷却,贝氏体形核质点增加,因而对晶内形核的针状铁素体不利.稀土元素对提高焊缝金属中针状铁素体含量有一定的促进作用.
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| 关 键 词： | 烧结焊剂 强韧性 针状铁素体 晶内形核 相变温度 |
| 文章编号： | 0253-360X（2006）10-029-04 |
| 收稿时间： | 09 20 2005 12:00AM |
| 修稿时间： | 2005-09-20 |
Agglomerated alkali flux for submerged arc welding of high strength-toughness steel X80 |
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| ZHANG Min,YAO Cheng-wu,LIU Bin and LI Ji-hong.Agglomerated alkali flux for submerged arc welding of high strength-toughness steel X80[J].Transactions of The China Welding Institution,2006,27(10):29-32. |
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| Authors: | ZHANG Min YAO Cheng-wu LIU Bin and LI Ji-hong |
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| Affiliation: | School of Material Science and Engineering, Xi''an University of Technology, Xi''an 710048, China,School of Material Science and Engineering, Xi''an University of Technology, Xi''an 710048, China,School of Material Science and Engineering, Xi''an University of Technology, Xi''an 710048, China and School of Material Science and Engineering, Xi''an University of Technology, Xi''an 710048, China |
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| Abstract: | |
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| Keywords: | agglomerated flux strength and toughness acicular ferrite intragranular nucleation phase transformation temperature |
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