马氏体和铁素体状态下 T91 耐热钢氧化和蠕变特性的新见解

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2024-09-27 DOI:10.1016/j.corsci.2024.112487

Hongjun Li , Ming Huang , Yuan Qin , Lin Hong , Sen Yang

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引用次数: 0

摘要

本研究系统地比较了 T91 钢在马氏体和铁素体状态下的氧化和蠕变特性。研究结果表明，在氧化过程中形成了混合氧化物，包括 Fe3O4、（Cr、Mn）2O3 和 MnCr2O4。在铁素体试样中，由于 M23C6 碳化物的转变，氧气扩散通道受到限制。此外，铁素体钢的蠕变寿命较差，并观察到较强的α纤维纹理。对于 T91 钢，适当的热机械处理可使 M23C6 碳化物在基体中均匀分布，达到最佳的沉淀强化效果，从而改善高温性能。

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New insights into oxidation and creep characteristics of T91 heat-resistant steel in martensitic and ferritic states

This study systematically compared the oxidation and creep characteristics of T91 steel in both martensitic and ferritic states. Findings indicate the formation of mixed oxides, including Fe₃O₄, (Cr, Mn)₂O₃, and MnCr₂O₄, during the oxidation process. In the ferritic specimens, the oxygen diffusion channel is restricted due to the transition of M₂₃C₆ carbide. Moreover, the ferritic steel exhibits poor creep life, and a strong α fibre texture was observed. For T91 steel, appropriate thermomechanical treatment can lead to uniform distribution of M₂₃C₆ carbides within the matrix, achieving the optimal precipitation strengthening effect and resulting in improved high-temperature properties.

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.