| 引用本文: | 朱平， 赵建仓， 王淦刚， 石云哲.回火焊道对核电低合金钢表面镍基堆焊层热影响区性能的影响[J].中国表面工程,2014,27(1):87~92 |
| ZHU Ping, ZHAO Jiancang, WANG Gangang, SHI Yunzhe.Influence of Tempering Bead on Performance of Heat Affected Zone of Nickel-based Alloy Surfacing Layer for Nuclear Power Low Alloy Steel[J].China Surface Engineering,2014,27(1):87~92 |
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| 摘要: |
| 采用钨极氩弧焊焊接方法在核电用16MND5低合金钢表面进行690镍基焊丝堆焊，分别堆焊1层和利用回火焊道方法堆焊3层，研究回火焊道对堆焊层热影响区的硬度、组织和冲击韧性的影响。结果表明：回火焊道产生的回火效应可有效降低合金钢镍基堆焊层热影响区的硬度至可接受硬度范围320 HV10以下，堆焊层热影响区的冲击韧性提高27%以上，均值达到163 J/cm2，热影响区板条状组织得到有效回复，获得满足RCCM标准要求的低合金钢焊接热影响区硬度和冲击韧性指标。研究表明利用回火焊道技术可实现低合金钢镍基堆焊免除高温回火热处理。 |
| 关键词: 镍基合金 堆焊 回火焊道 热影响区 硬度 |
| DOI：10.3969/j.issn.1007-9289.2014.01.014 |
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| Influence of Tempering Bead on Performance of Heat Affected Zone of Nickel-based Alloy Surfacing Layer for Nuclear Power Low Alloy Steel |
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ZHU Ping, ZHAO Jiancang, WANG Gangang, SHI Yunzhe
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Remanufacturing and Electrical Safety Center of SNPI Suzhou Nuclear Power Research Institute Co.Ltd., Suzhou 215004, Jiangsu
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| Abstract: |
| Tungsten argon arc welding method is used to surfacing 690 nickelbased alloy welding wire on low alloy steel 16MND5, the first layer and the third layer using tempering bead technology, respectively. The hardness, microstructure, and impact toughness of the surfacing layer heat affected zone are investigated. The results show that the hardness of surfacing layer HAZ can be dropped to below 320 HV10 by the effect of tempering bead, impact toughness of surfacing HAZ increases by more than 27%, and the average reaches 175 J/cm2, strip microstructure can be improved effectively, which can satisfy the requirements of RCC M standard for low alloy steel welding HAZ hardness and toughness index. Studies show that the use of tempering bead technology can achieve the post weld heat treatment exemption of lowalloy nickelbased surfacing. |
| Key words: nickelbased alloy surfacing tempering bead heat affected zone hardness |
