An integrated experimental and modeling approach to determine hydrogen diffusion and trapping in a high-strength steel

2021 ◽  
Author(s):  
Leonardo Simoni ◽  
Tiago Falcade ◽  
Daniel C.F. Ferreira ◽  
Carlos E.F. Kwietniewski
Keyword(s):  
High Strength Steel ◽  
Hydrogen Diffusion ◽  
High Strength ◽  
Modeling Approach

Analysis of hydrogen diffusion and trapping in ultra-high strength steel grades

2018 ◽  
Vol 746 ◽  
pp. 557-566 ◽  
Author(s):  
Tobias Schaffner ◽  
Alexander Hartmaier ◽  
Valentin Kokotin ◽  
Michael Pohl
Keyword(s):  
High Strength Steel ◽  
Hydrogen Diffusion ◽  
High Strength ◽  
Ultra High Strength Steel ◽  
Steel Grades

Effect of Hot Dip Galvanizing on the Mechanical Properties of High Strength Steels

2014 ◽  
Vol 604 ◽  
pp. 12-15 ◽  
Author(s):  
Sirli Sepper ◽  
Priidu Peetsalu ◽  
Mart Saarna ◽  
Valdek Mikli ◽  
Priit Kulu
Keyword(s):  
Mechanical Properties ◽  
Structural Steel ◽  
High Strength Steel ◽  
Hydrogen Diffusion ◽  
High Strength Steels ◽  
High Strength ◽  
Bath Temperature ◽  
Zinc Bath ◽  
Batch Type ◽  
Pre Treatment

Present study focuses on investigating the hot dip galvanizing effect on the mechanical properties of high strength steel. The effect of chemical pre-treatment (hydrogen diffusion) and the effect of hot dip galvanizing temperature on mechanical properties was studied with high strength steel S650MC. Additional tests were made with widely used structural steel S355J2. A batch type hot dip galvanizing process was used and zinc bath temperature was 450 °C and 550 °C. Results of the study show the behaviour of high strength steel during hot dip galvanizing process.

Analysis of Hydrogen Diffusion in Notched High-Strength Steel Wires

2007 ◽  
Vol 340-341 ◽  
pp. 1339-1344
Author(s):  
Lin Bing
Keyword(s):  
Finite Element ◽  
Hydrogen Concentration ◽  
High Strength Steel ◽  
Hydrogen Diffusion ◽  
Plastic Material ◽  
High Strength ◽  
Material Behavior ◽  
Elastic Plastic ◽  
Steel Wires ◽  
Notch Tip

Fick's laws were used to model the hydrogen diffusion in notched high-strength steel wires loaded in tension under elastic-plastic conditions. The plastic deformation at the notch tip has an effect on the peak distribution of the hydrostatic stress ( h σ ). So, in stress-assisted diffusion analysis, elastic-plastic material behavior should be considered. Coupled diffusion elastic-plastic finite element analysis was implemented in the finite element program ABAQUS using the user element subroutine (UEL) and the coupled temperature-displacement solver routine to solve the variational form of the diffusion equation in order to obtain the hydrogen concentration distribution ahead of the notch tip in high-strength steel wires under plane strain conditions. The analysis results are compared with those obtained from elastic analysis, which shows that, if a critical hydrogen concentration is regarded as a local fracture criterion, the elastic-plastic analysis results can be used to evaluate the hydrogen embrittlement of high-strength steel wires.

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