Synergistic effect of grain size and second-phase particle on the oxidation behaviour of a high-manganese austenitic heat-resistant steel

被引：18
作者：
Liu, Tianlong [1 ,2 ]
Cui, Yanxiong [1 ,2 ,3 ]
Zheng, Kaihong [1 ,2 ]
Yin, Fuxing [1 ,2 ]
Luo, Zhichao [1 ,2 ]
机构：
[1] Guangdong Acad Sci, Inst New Mat, Guangzhou 510651, Peoples R China
[2] Guangdong Prov Key Lab Met Toughening Technol & Ap, Guangzhou 510651, Peoples R China
[3] Xian Technol Univ, Sch Mat Sci & Chem Engn, Xian 710021, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 215卷
基金：
中国国家自然科学基金;
关键词：
Austenitic heat-resistant steel; High-manganese; Grain size; Second-phase particles; Oxidation behaviour; HIGH-TEMPERATURE OXIDATION; FERRITIC-MARTENSITIC STEEL; STAINLESS-STEEL; FATIGUE BEHAVIOR; DEGREES-C; MICROSTRUCTURE; BOUNDARIES; EVOLUTION; DIFFUSION; MN;
D O I：
10.1016/j.corsci.2023.111054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of grain size and second-phase particles on the oxidation behaviour of a high-manganese austenitic (HMA) heat-resistant steel are investigated. Four HMA steels with controlled grain size and volume fraction of second-phase particles are prepared and then exposed at 1023 K in air for 400 h. The results show that the particle-reinforced HMA heat-resistant steels exhibit excellent oxidation resistance. A physical model was pro-posed to investigate the synergistic effect of grain size and second-phase particle on the oxide scale evolution in HMA steels. The presence of second-phase particles can significantly reduce the effective grain size for the oxide scale formation by providing diffusion channels. Therefore, the formation of nodular oxide and the occurrence of internal oxidation are effectively inhibited in the particle-reinforced heat-resistant steels.
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页数：13
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