Hot Corrosion Behavior of Fe–Cr–Ni-Based Austenitic Heat-Resistant Steel Weld Metal in Na2SO4–NaCl Molten Salts at Different Temperatures
发布时间：2023-02-10点击次数：
- 影响因子：2.2
- DOI码：10.1007/s11085-022-10144-0
- 所属单位：南京工程学院
- 教研室：0
- 发表刊物：High Temperature Corrosion of Materials
- 刊物所在地：英国
- 项目来源：江苏省自然科学基金，2020年“双创计划”特别人才引进，江苏省先进结构材料与应用技术重点实验室开放项目，南京工程学院人才引进研究基金
- 关键字：Weld metal ；Hot corrosion；Interdendritic ；Austenitic alloy；Oxidation
- 摘要：The hot corrosion behavior of the austenitic heat-resistant steel weld metal produced by multi-pass gas tungsten arc welding was investigated. A bilayer oxide scale formed on the surface of the weld metal by the selective oxidation of the element Cr and Fe, and the dissolution of the oxide film occurred at elevated temperatures due to the existence of the molten salt. Morphologies and structures of the oxide scale were characterized by electron microscopy and X-ray diffraction techniques, and then the underlying reason for the hot corrosion of the nonequilibrium weld metal was identified. The interdendritic region could act as the shortcut path for the oxygen, which promotes the internal oxide distribution in chains, and a large internal oxidation zone appears under the bilayer oxide scale.
- 备注：0
- 论文类型：研究论文
- 学科门类：工学
- 卷号：99
- 页面范围：117-132
- ISSN号：2731-8400
- 是否译文：否
- 发表时间：2023-01-01
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个人信息
- 性别：男
- 职称：副教授
- 学历：研究生
- 学位：博士
- 所在单位：材料科学与工程学院
- 学科： 材料加工工程
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