High-temperature internal oxidation behavior of surface cracks in low alloy steel bloom

被引：21
|
作者：
Xing, Lidong [1 ]
Gu, Chao [1 ]
Lv, Ziyu [1 ]
Bao, Yanping [1 ]
机构：
[1] Univ Sci & Technol Beijing USTB, Tech Support Ctr Prevent & Control Disastrous Acc, State Key Lab Adv Met, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2022年 / 197卷
基金：
中国博士后科学基金;
关键词：
Low alloy steel; Raman spectroscopy; High-temperature oxidation; Internal oxidation; Interfaces; CONTINUOUS-CASTING BLOOM; AUSTENITIC STAINLESS-STEEL; PWR PRIMARY WATER; HEAVY REDUCTION; RAMAN-SPECTROSCOPY; IRON-OXIDES; SCALE; KINETICS; MICROSTRUCTURE; MECHANISMS;
D O I：
10.1016/j.corsci.2021.110076
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidation behavior and mechanism near the crack of bloom was investigated by prefabricated crack and oxidation at high temperature (1000 - 1200 degrees C). The interface oxide layer composed of Fe2SiO4 and FeCr2O4 can prevent the steel matrix from being oxidized. However, the melting point of Fe2SiO4 is approximately 1170 degrees C, so the interface oxide layer is in a metastable state with the progress of high-temperature oxidation. At this time, the thickness of the internal oxidation spot layer in the steel matrix increases rapidly. As a result, internal oxidation mechanism of surface cracks at high temperature is clarified.
引用
收藏
页数：12
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