High-temperature oxidation behaviour and influence on the fracture property of compacted graphite iron

被引：0

作者：

Wang, Xiaosong ^{[1
]}

Zhang, Weizheng ^{[2
]}

Yuan, Yanpeng ^{[2
]}

机构：

[1] Haifang Shanghai Technol Co Ltd, Algorithm Dev Dept, Shanghai, Peoples R China

[2] Beijing Inst Technol, Sch Mech Engn, Beijing, Peoples R China

来源：

MATERIALS AT HIGH TEMPERATURES | 2024年 / 41卷 / 5-6期

关键词：

Cast iron; graphite; oxidation; decarburisation; fracture; CAST-IRON; THERMAL FATIGUE; MICROSTRUCTURE; MORPHOLOGY; EVOLUTION; STRENGTH;

D O I：

10.1080/09603409.2024.2410526

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High-temperature oxidation and uniaxial tensile tests were conducted on cylinder head cast iron material to investigate oxidation kinetics, surface and cross-section oxidation features, oxidation growth behaviour, and the influence of oxidation on fracture through characterisation analysis of microstructure. The results indicate that the oxidation kinetics approximately follow the parabolic rate law above 570degree celsius but exhibit poor consistency at 500degree celsius. A multi-layered oxide structure forms with unique morphological characteristics in a cross-sectional direction. Based on the spatial distribution of graphite, two oxidation mechanisms were identified in both the matrix and graphite phases. Uniaxial tensile tests reveal that the mechanical and fracture properties of the material are significantly affected by the oxidation temperature.

引用

页码：612 / 625

页数：14

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