Correlation between Microstructure and Hydrogen Degradation of 690 MPa Grade Marine Engineering Steel
Open Access
- 10 February 2021
- Vol. 14 (4), 851
- https://doi.org/10.3390/ma14040851
Abstract
Electrochemical H charging, hydrogen permeation, and hydrogen-induced cracking (HIC) behavior of 690 MPa grade steel substrate and different heat-treatment states (annealed, quenched, normalized, tempered) are investigated by cyclic voltammetry (CV), hydrogen permeation, electrochemical H charging, and slow strain rate tensile test (SSRT). The results show that hydrogen diffuses through the steel with the highest rate in base metal and the lowest rate in annealed steel. The hydrogen-induced cracks in base metal show obvious step shape with tiny cracks near the main crack. The cracks of annealed steel are mainly distributed along pearlite. The crack propagation of quenched steel is mainly transgranular, while the hydrogen-induced crack propagation of tempered steel is along the prior austenite grain boundary. HIC sensitivity of base metal is the lowest due to its fine homogeneous grain structure, small hydrogen diffusion coefficient, and small hydrogen diffusion rate. There are many hydrogen traps in annealed steel, such as the two-phase interface which provides accommodation sites for H atoms and increases the HIC susceptibility.Funding Information
- National Natural Science Foundation of China (51601182)
- Fundamental Research Funds for the Central Universities (201762008)
- Shandong Provincial Key R & D plan (2019GHY112050)
This publication has 54 references indexed in Scilit:
- Analysis of the Physicochemical, Mechanical, and Electrochemical Parameters and Their Impact on the Internal and External SCC of Carbon Steel PipelinesMaterials, 2020
- Quantitative study of the corrosion evolution and stress corrosion cracking of high strength aluminum alloys in solution and thin electrolyte layer containing Cl-Corrosion Science, 2020
- Development of an Electrochemical Procedure for Monitoring Hydrogen Sorption/Desorption in SteelJournal of the Electrochemical Society, 2017
- The effect of nanosized (Ti,Mo)C precipitates on hydrogen embrittlement of tempered lath martensitic steelActa Materialia, 2014
- Hydrogen environment embrittlement of an ODS RAF steel – Role of irreversible hydrogen trap sitesInternational Journal of Hydrogen Energy, 2010
- Hydrogen Embrittlement of Metals: A Primer for the Failure AnalystJournal of Failure Analysis and Prevention, 2008
- Hydrogen induced cold cracking studies on armour grade high strength, quenched and tempered steel weldmentsInternational Journal of Hydrogen Energy, 2008
- Hydrogen in microalloyed steelsSteel Research, 2001
- Study of the effect of heat treatment on hydrogen embrittlement of AISI 4340 steelJournal of Materials Science, 1989
- A classification of hydrogen traps in steelMetallurgical Transactions A, 1979