Study on corrosion cracking and oxidation mechanism of Inconel 718 burner of gasifier pulverized coal

• Published in: Engineering failure analysis Vol. 111; p. 104504
• Main Authors: Wei, Yuwei, Zhao, Qinxin, Zhang, Xiaobin, Yang, Lili, Liang, Zhiyuan, Lai, Jiafeng, Zhong, Linzhi, Wang, Xiaolin
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.04.2020
• Subjects: Micro-cracks; Oxidation corrosion layer; Thermal fatigue; Thermal stress; Thermal stress; Oxidation corrosion layer; Micro-cracks; Thermal fatigue

•Thermal fatigue crack propagation was due to the repeated start-up and shutdown of gasifier.•Excessive δ phase weakens the matrix, and facilitates crack initiation and propagation.•The distribution of elements at different depths of the corrosion oxide layer was described.•Superalloys with better o...