Experimental and Numerical Investigation of Hydrogen Embrittlement Effect on Microdamage Evolution of Advanced High-Strength Dual-Phase Steel

The effect of hydrogen on the microdamage evolution of 1200M advanced high-strength steel was evaluated by the combination of experimental and numerical approaches. In the experimental section, the tensile test was performed under different testing conditions, i.e., vacuum, in-situ hydrogen plasma c...

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Vydané v:Metals and materials international Ročník 27; číslo 7; s. 2276 - 2291
Hlavní autori: Asadipoor, M., Kadkhodapour, J., Pourkamali Anaraki, A., Sharifi, S. M. H., Darabi, A. Ch, Barnoush, A.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Seoul The Korean Institute of Metals and Materials 01.07.2021
Springer Nature B.V
대한금속·재료학회
Predmet:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Damage assessment
Dimpling
Dual phase steels
Ductile fracture
Elongation
Engineering Thermodynamics
Evolution
Failure mechanisms
Finite element method
Fracture surfaces
Heat and Mass Transfer
High strength steels
Hydrogen
Hydrogen charging
Hydrogen embrittlement
Hydrogen plasma
Machines
Magnetic Materials
Magnetism
Manufacturing
Materials Science
Mathematical models
Mechanical properties
Metallic Materials
Processes
Solid Mechanics
Tensile tests
Three dimensional models
Ultimate tensile strength
Yield stress
재료공학
Ex-situ electrochemical hydrogen charging
Damage evolution
GTN damage model
In-situ hydrogen plasma charging
Hydrogen embrittlement
ISSN:1598-9623, 2005-4149
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Shrnutí:The effect of hydrogen on the microdamage evolution of 1200M advanced high-strength steel was evaluated by the combination of experimental and numerical approaches. In the experimental section, the tensile test was performed under different testing conditions, i.e., vacuum, in-situ hydrogen plasma charging (IHPC), ex-situ electrochemical hydrogen charging (EEHC), and ex-situ + in-situ hydrogen charging (EIHC) conditions. The post-mortem analysis was conducted on the fracture surface of specimens to illuminate the impact of hydrogen on the microstructure and mechanical properties. The results showed that under all of hydrogen charging conditions, the yield stress and ultimate tensile strength were slightly sensitive to hydrogen, while tensile elongation was profoundly affected. While only ductile dimple features were observed on the fracture surfaces in vacuum condition, the results indicated a simultaneous action of the hydrogen-enhanced decohesion (HEDE) and hydrogen enhanced localized plasticity (HELP) mechanisms of HE, depending on the local concentration of hydrogen under the IHPC and EEHC conditions. At the EIHC condition, the HEDE model was the dominant failure mechanism, which was manifested by the HE-induced large crack. In the numerical approach, a finite-element analysis was developed to include the Gorson–Tvergaard–Needleman (GTN) damage model in Abaqus™ software. To numerically describe the damage mechanism, the GTN damage model was utilized in the 3D finite-element model. After calibration of damage parameters, the predicted damage mechanisms for two testing conditions, i.e., vacuum and EIHC, were compared with experimental results. Graphic Abstract
Bibliografia:ObjectType-Article-1
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content type line 14
ISSN:1598-9623
2005-4149
DOI:10.1007/s12540-020-00681-1