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铁素体不锈钢与耐候钢塞焊接头的组织与疲劳性能 预览
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作者 陈丽园 苗佳 +2 位作者 穆云平 郝晓卫 宗桓旭 《电焊机》 2018年第11期89-93,共5页
采用ER308焊丝对1.5mm厚1.4003铁素体不锈钢与3mm厚Q345NQR2耐候钢进行塞焊试验,对塞焊接头进行显微组织分析、显微硬度测试以及脉动拉伸疲劳试验。结果表明:塞焊接头熔核区组织为δ铁素体+奥氏体,1.4003不锈钢热影响区组织为块状铁素体... 采用ER308焊丝对1.5mm厚1.4003铁素体不锈钢与3mm厚Q345NQR2耐候钢进行塞焊试验,对塞焊接头进行显微组织分析、显微硬度测试以及脉动拉伸疲劳试验。结果表明:塞焊接头熔核区组织为δ铁素体+奥氏体,1.4003不锈钢热影响区组织为块状铁素体,晶粒度3~4级,晶粒长大现象较为明显,Q345NQR2钢热影响区组织为珠光体+少量铁素体;熔核区硬度最高,1.4003不锈钢侧热影响区硬度较熔核区略有下降,而Q345NQR2侧热影响区硬度明显上升;塞焊接头在循环寿命1×107条件下的中值疲劳强度为1.675kN,疲劳裂纹启裂于两板间的熔核区边缘,原因是该处受到拉应力与剪应力的双重作用。 展开更多
关键词 耐候钢 铁素体不锈钢 显微组织 疲劳性能 塞焊
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耐候钢的特点及在建筑物中的应用 预览
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作者 王志坤 《山西建筑》 2018年第10期91-92,共2页
简述了耐候钢的构造及性能,对耐候钢抗腐蚀原理进行了分析,并探讨了耐候钢在我国的发展历史,提出了在施工中耐候钢封固应满足的各项指标,以供参考。
关键词 耐候钢 构造 技术规范
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Effects of Alloy Element and Microstructure on Corrosion Resistant Property of Deposited Metals of Weathering Steel
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作者 Xiao-ming XIAO Yun PENG +1 位作者 Cheng-yongMA Zhi-ling TIAN 《钢铁研究学报:英文版》 SCIE CAS CSCD 2016年第2期171-177,共7页
Alloy element and microstructure are key factors that dominate mechanical and corrosion resistant properties of weathering steel.The effect of Mo on microstructure,mechanical properties and corrosion resistant propert... Alloy element and microstructure are key factors that dominate mechanical and corrosion resistant properties of weathering steel.The effect of Mo on microstructure,mechanical properties and corrosion resistant property of deposited metal was investigated.Experimental results show that with the increase of Mo content in deposited metals,the phase transformation temperature decreases,and the ferrite zone in CCT diagram moves rightward,resulting in enlarged bainite zone and reduced ferrite and pearlite zone.The addition of 0.24mass% Mo in deposited metal results in the increase of tensile strength,more M-A constituent and less high angle grain which reduce the low temperature toughness.It is found that Mo can raise the weathering resistance of deposited metal in industrial atmosphere.Analysis indicates that Mo may enrich in the inner rust layer,produce MoO3,enhance the formation of compact rust film and impede the anode dissolution reaction.Granular bainite in deposited metals displays better corrosion resistance than acicular ferrite during the initial corrosion stage,but its long-term influence on the corrosion resistance is limited. 展开更多
关键词 weathering steel deposited metal MO MICROSTRUCTURE mechanical property corrosion resistance
贝氏体耐候钢模拟工业大气腐蚀交流阻抗谱分析 预览
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作者 邵长静 《科技与创新》 2015年第4期8-9,共2页
主要阐述了实验目的、实验方法和实验结果等具体内容,提出了提高贝氏体耐候钢耐蚀性作用的方法和具体实验判定过程。
关键词 贝氏体耐候钢 耐蚀性 交流阻抗谱 实验钢
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高磷耐候钢铸轧薄带的组织和深拉伸性能 被引量:1
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作者 周国平 于世川 +3 位作者 刘振宇 陈俊 邱以清 王国栋 《钢铁研究学报》 CAS CSCD 北大核心 2011年第1期36-41,共6页
采用双辊薄带铸轧机制备出磷含量(质量分数,%)为0.15%的新型高磷耐候钢薄带。对比研究了常规薄带和铸轧薄带冷轧退火后的组织、深拉伸性能,并通过对常规薄带和铸轧薄带中心层织构演变规律的分析探讨了冷轧退火后的铸轧薄带深拉... 采用双辊薄带铸轧机制备出磷含量(质量分数,%)为0.15%的新型高磷耐候钢薄带。对比研究了常规薄带和铸轧薄带冷轧退火后的组织、深拉伸性能,并通过对常规薄带和铸轧薄带中心层织构演变规律的分析探讨了冷轧退火后的铸轧薄带深拉伸性能较好的原因。结果表明,在设定的工艺条件下冷轧退火后,铸轧薄带和常规薄带的组织均为铁素体和珠光体组成的平衡态组织,铸轧薄带纵断面上晶粒取向分布更均匀;常规薄带和铸轧薄带中γ取向线强度相当,导致塑性应变比P值相当,而铸轧薄带中{111}〈110〉织构强度比常规薄带降低50%导致△r大幅减小,提高了深拉伸性能。 展开更多
关键词 薄带铸轧 耐候钢 深拉伸性能 各向异性
武钢大线能量焊接系列钢的研发进展 预览 被引量:8
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作者 陈晓 卜勇 习天辉 《中国材料进展》 CSCD 2011年第12期 34-39,共6页
提出了氧氮化物和氧硫化物冶金新思路、新原理,发明了高熔点第二相质点诱导相变技术,突破了钢铁材料不能承受大线能量焊接的难关,从技术背景、冶金原理、技术关键及应用情况等方面详细介绍了武钢近年来自主研发的大线能量低焊接裂纹... 提出了氧氮化物和氧硫化物冶金新思路、新原理,发明了高熔点第二相质点诱导相变技术,突破了钢铁材料不能承受大线能量焊接的难关,从技术背景、冶金原理、技术关键及应用情况等方面详细介绍了武钢近年来自主研发的大线能量低焊接裂纹敏感性钢、大线能量焊接高强度钢、大线能量焊接低温钢、大线能量焊接耐火耐候钢、大线能量焊接抗震钢等系列钢种。该系列钢的集成技术及产业化应用,为我国该系列钢的需求提供了技术支撑,有效带动了我国有关钢厂对高性能高技术含量钢材的研发和生产,结束了大线能量焊接钢长期依赖进口并受制于人的历史。 展开更多
关键词 大线能量焊接钢 低温钢 耐候钢 抗震钢 冶金原理
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Effects of rare earth on inclusions and corrosion resistance of 10PCuRE weathering steel 被引量:4
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作者 YUE 《中国稀土学报:英文版》 SCIE EI CAS CSCD 2010年第6期共5页
The types,morphologies and distributions of nonmetallic inclusions in Cu-P weathering steels with and without rare earth were analyzed through a quantitative image analyzer,scanning electron microscopy(SEM)and energy ... The types,morphologies and distributions of nonmetallic inclusions in Cu-P weathering steels with and without rare earth were analyzed through a quantitative image analyzer,scanning electron microscopy(SEM)and energy dispersive spectroscopy(EDS)attached to SEM.Solid-soluble content of rare earth in the steels was analyzed by non-aqua electroanalysis and ICP.The results showed that rare earth modified the types and the morphologies of inclusions in the weathering steels.The small spherical rare earth oxysulfides and rare earth sulphides replaced the elongated MnS inclusions in the RE weathering steels.The rare earth inclusions dispersedly distributed and most inclusions were smaller than 2 μm in size.The optimum content of RE was 0.0065%-0.016% for 10PCuRE weathering steels containing about0.002% oxygen and 0.004% sulfur.Solid-soluble content of rare earth in steels was(14-20)x 10-6,which can act as a micro-alloying element.The corrosion resistance of 10PCuRE weathering steels and Q235 were studied by dry-wet cyclic immersion test.Their corrosion rates were obtained respectively.The polarization curves and pitting corrosion behaviors of weathering steels with and without rare earth were measured by electrochemical methods.The corrosion resistance of Cu-P weathering steels was improved by adding an appropriate amount of rare earth.Less and fewer rare earth inclusions largely decreased pitting susceptibility and rate of pit propagation.The pitting potential and the resistance against pitting corrosion of the RE weathering steel were significantly improved due to the modification of rare earth to inclusions. 展开更多
关键词 WEATHERING steel CORROSION resistance rare earth PITTING CORROSION energy DISPERSIVE spectroscopy PITTING susceptibility nonmetallic INCLUSIONS polarization curves electron microscopy PITTING potential improved quantitative results SEM small image Q235 MNS EDS act
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