材料工程2025，Vol.53Issue(5)：214-225,12.DOI:10.11868/j.issn.1001-4381.2023.000115
S30815耐热不锈钢基材和焊接接头的高温氧化行为
High temperature oxidation behavior of S30815 heat resistant stainless steel substrates and welded joint
摘要
Abstract
The oxidation kinetics and microstructure of S30815 heat resistant stainless steel,both in its base material and welded joint,are analyzed at different service temperatures by the constant temperature oxidation method.High temperature oxidation kinetic curves are obtained by the mass gain method.The morphology,composition,and microstructure of the oxide films are studied by using scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),and X-ray diffraction(XRD),respectively.The results show that under constant temperature oxidation conditions at 780℃,there is less mass gain and a relatively lower oxidation rate.The oxidation products are mainly Cr2O3,Fe2O3,and Fe3Mn3O8,exhibit sheet,strip,and polyhedron shapes.At 880℃,the mass gain and the oxidation rate significantly increase.The oxidation product at this temperature comprises a mixed oxide of Cr2O3,Fe3O4,MnFe2O4,and Ni(Cr2O4),which is mainly in thin strips and sheets.The oxidation kinetics curves of S30815 follow a parabolic rule.With the increase of oxidation time,the oxidation rate gradually decreases and eventually tends to be stable,showing a good oxidation resistance at high temperature.A larger amount of dense Cr2O3 oxide film is generated on the surface of the welded joint,exhibiting a lower average oxidation rate and better oxidation resistance compared to the base material.关键词
耐热不锈钢/焊接接头/氧化动力学/氧化产物/抗氧化性能Key words
heat resistant stainless steel/welded joint/oxidation kinetics/oxidation product/oxidation resis-tance property分类
矿业与冶金引用本文复制引用
任杰,张利,刘承志,成生伟,杜晓建,刘艳莲,杨飞..S30815耐热不锈钢基材和焊接接头的高温氧化行为[J].材料工程,2025,53(5):214-225,12.基金项目
山西省基础研究计划项目(20210302124310) （20210302124310）
山西省高等学校科技创新项目(2020L0311,2020L0320) （2020L0311,2020L0320）
