添加铈的新型低温高Mn奥氏体钢焊缝金属中夹杂物的演变

IF 3.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2022-11-17 DOI:10.1080/13621718.2022.2146322

Jinshuai Zhang, Guangqiang Li, Honghong Wang, X. Wan, Mingfeng Hu, Yulong Cao

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引用次数: 1

摘要

在埋弧焊中，通过添加二氧化铈和钙硅还原剂，使铈（Ce）有效地过渡到高锰奥氏体钢焊缝金属中。通过热力学计算和实验，系统地研究了不同Ce含量的焊缝金属中夹杂物的组成、数量密度和尺寸的演变行为。结果表明，随着Ce含量从0增加到0.087wt%，夹杂物的数量密度增加，平均尺寸减小。同时，尺寸小于0.80的夹杂物数量百分比 μm从79.28%增加到91.43%。夹杂物的演化过程为Al2O3→ Al11O18Ce→ CeAlO3→ Ce2O3→ Ce2O2S随焊缝金属中Ce含量的增加而增加。特别是采用原位样品制备方法提取了Ce-O-S-Al包裹体，证明了其内部结构和演化过程。建立了Ce-Al-O-S体系的完整形成模型。

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Evolution of inclusions in novel cryogenic high-Mn austenitic steel weld metal with cerium addition

Cerium (Ce) was effectively transitioned into the high-Mn austenitic steel weld metal under submerged arc welding by adding cerium dioxide and calcium silicon reducing agents into flux. The evolution behaviours of the composition, number density and size of inclusions in weld metal with different Ce contents were systematically investigated by thermodynamic calculation and experiments. The results show that the number density of inclusions increased and average size decreased with the increase of Ce content from 0 to 0.087 wt-%. Meanwhile, and the percentage of inclusions number with size less than 0.80 μm increased from 79.28% to 91.43%. The evolutionary process of inclusions was Al2O3 → Al11O18Ce → CeAlO3 → Ce2O3 → Ce2O2S with the increase of Ce content in the present weld metal. In particular, Ce-O-S-Al inclusion was extracted by in-situ sample preparation method, which proved its internal structure and evolution process. The complete formation model of Ce-Al-O-S system was also established.

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来源期刊

Science and Technology of Welding and Joining 工程技术-材料科学：综合

CiteScore

6.10

自引率

12.10%

发文量

审稿时长

1.7 months

期刊介绍： Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining. Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.