微束X射线荧光光谱法在船体钢焊接接头成分原位定量统计分布分析中的应用  

Application of microbeam X-ray fluorescence spectrometry in original position quantitative statistic distribution analysis of hull steel welded joint component

作　　者：吴东晓 王蓬 李冬玲 陈鸣 赵晋斌 范小芬 WU Dongxiao;WANG Peng;LI Dongling;CHEN Ming;ZHAO Jinbin;FAN Xiaofen(Central Iron and Steel Research Institute Co.,Ltd.,Beijing 100081,China;Beijing Key Laboratory of Metallic Materials Characterization,Beijing 100081,China;NCS Testing Technology Co.,Ltd.,Beijing 100081,China;Nanjing Iron and Steel Co.,Ltd.,Nanjing 210035,China)

机构地区：[1]钢铁研究总院有限公司,北京100081 [2]金属材料表征北京市重点实验室,北京100081 [3]钢研纳克检测技术股份有限公司,北京100081 [4]南京钢铁股份有限公司,江苏南京210035

出　　处：《冶金分析》2023年第4期1-9,共9页Metallurgical Analysis

基　　金：国家重点研发计划(2021YFB3702103)。

摘　　要：船体钢焊接接头化学成分直接影响组织分布和船体钢的整体使用性能,研究焊接接头区域成分分布对于改进工艺参数和提升焊接性能具有指导意义。基于微束X射线荧光光谱(μ-XRF)建立了焊接接头区域成分的原位定量统计分布表征方法,对焊接接头中Cr、Cu、Mn、Mo、Nb、Ni、Ti等7种元素的分布进行了无损原位分析表征。探究了从焊材区域到母材区域各元素的分布规律,发现不同焊接工艺下焊接接头成分的影响规律,高能量焊接下样品焊材中Mn、Mo和Ni存在偏析,分布趋势相反。在常规多道焊接工艺下,焊接区域底层焊材成分分布不均匀,母材中Mn、Cr和Ni也存在明显的偏析带。方法对于精细考察和评价焊接区域的质量,解析焊接区域的成分、组织结构和性能的相关性具有重要意义。The chemical composition of welded joint of hull steel directly affects the microstructure distribution and the overall performance of the hull steel.The study on regional composition distribution of the welded joint has guiding significance for modifying the process parameters and improving the welding performance.A method for original position quantitative statistic distribution analysis of regional components of welded joints was established based on microbeam X-ray fluorescence spectrometry(μ-XRF).The distribution of seven elements in welded joints,including Cr,Cu,Mn,Mo,Nb,Ni,and Ti,was characterized by non-destructive and original position analysis.The distribution law of each element from the welding consumable area to the base metal area was explored,and the influence of different welding processes on the composition of the welded joint was found.There was segregation of Mn,Mo and Ni in sample welding consumable area under high energy welding,and the distribution trend was reversed.Under the conventional multi-pass welding process,the distribution of the underlying welding consumable components in the welding area was uneven,and there were obvious segregation bands for Mn,Cr and Ni in base metal area.The proposed method was of great significance for the fine investigation and evaluation of the quality of the welding area,and the analysis of the correlation between the composition,microstructure and properties of the welding area.

关 键 词：微束X射线荧光光谱法(μ-XRF) 原位统计分布分析 船体钢焊接接头 定量方法 偏析 成分分布 

分 类 号：O657.31[理学—分析化学] TF76[理学—化学]