High-Temperature Hydrogen Attack on 2.25Cr-1Mo Steel: The Roles of Residual Carbon, Initial Microstructure and Carbide Stability

被引：5

作者：

Alshahrani, M. A. M. ^{[1
,2
]}

Ooi, S. W. ^{[1
]}

Colliander, M. Hornqvist ^{[3
]}

El-Fallah, G. M. A. M. ^{[4
]}

Bhadeshia, H. K. D. H. ^{[1
,5
]}

机构：

[1] Univ Cambridge, Mat Sci & Met, Cambridge CB2 3QZ, England

[2] Saudi Aramco, Res & Dev Ctr, Dhahran 34466, Saudi Arabia

[3] Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden

[4] Univ Leicester, Sch Engn, Leicester LE1 7RH, Leics, England

[5] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2022年 / 53卷 / 12期

关键词：

EVOLUTION; KINETICS; GROWTH;

D O I：

10.1007/s11661-022-06809-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High temperature hydrogen attack is a damage mechanism that occurs in critical steel components in petrochemical plants and refineries when the hydrogen penetrates the steel and reacts with the carbides within to produce pores containing methane. With the motivation of understanding the role of carbide stability on the reaction with hydrogen, samples of a classic 21/4Cr-1Mo steel were subjected to a variety of heat treatments that generate a corresponding variety of precipitates, prior to exposure to high-pressure hydrogen in an autoclave. Using quantitative carbide, porosity and microstructural characterisation, it has been possible to demonstrate the roles of four variables: (a) the carbon residue present in the ferrite; (b) the non-equilibrium chemical composition of carbide; (c) the fraction of the carbide that is closest to the thermodynamic equilibrium state and (d) the initial microstructural state, i.e., whether it is martensitic or bainitic prior to heat treatment. (C) The Author(s) 2022

引用

页码：4221 / 4232

页数：12