Susceptibility of a Dual Phase Steel to Hydrogen Embrittlement

1985 ◽  
Vol 107 (4) ◽  
pp. 343-345 ◽  
Author(s):  
T. S. Sudarshan ◽  
N. C. Pruitt ◽  
M. R. Louthan ◽  
T. A. Place
Keyword(s):  
Hydrogen Embrittlement ◽  
Tensile Properties ◽  
Hydrogen Absorption ◽  
Dual Phase Steel ◽  
Tensile Tests ◽  
Fractographic Analysis ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Loss Of Strength ◽  
Strength And Ductility

Dual phase steels are used in many applications for which electroplating is required. Hydrogen absorption and consequent loss of strength and ductility is therefore possible. Tensile tests and subsequent fractographic analysis of charged and uncharged specimens of a dual phase steel showed that hydrogen absorption resulted in deterioration of tensile properties. The deterioration was attributed to weakening of interfaces between ferrite and other constituents.

Investigation and Mean-Field Modelling of Microstructural Mechanisms Driving the Tensile Properties of Dual-Phase Steels

2020 ◽  
Author(s):  
Alexandre Mathevon ◽  
Damien Fabrègue ◽  
Véronique Massardier ◽  
Sophie Cazottes ◽  
Philippe Rocabois ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Mean Field ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Field Modelling

Change in Tensile Properties of Dual-Phase Steels by Cu Addition

2017 ◽  
Vol 71 (2) ◽  
pp. 513-519 ◽  
Author(s):  
Junaidi Syarif ◽  
Nofriady Handra ◽  
Zainuddin Sajuri ◽  
Mohd Zaidi Omar
Keyword(s):  
Tensile Properties ◽  
Dual Phase ◽  
Dual Phase Steels

scholarly journals Effect of Martensite Fraction on Tensile Properties of Dual-Phase Steels

2012 ◽  
Vol 98 ◽  
pp. 320-327 ◽  
Author(s):  
Kohei Hasegawa ◽  
Yuki Toji ◽  
Hidekazu Minami ◽  
Hiroshi Ikeda ◽  
Tatsuya Morikawa ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Dual Phase ◽  
Dual Phase Steels ◽  
Martensite Fraction

Effects of interphase TiC precipitates on tensile properties and dislocation structures in a dual phase steel

2017 ◽  
Vol 123 ◽  
pp. 153-158 ◽  
Author(s):  
Shao-Pu Tsai ◽  
Chih-Hung Jen ◽  
Hung-Wei Yen ◽  
Chih-Yuan Chen ◽  
Ming-Chin Tsai ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Dual Phase Steel ◽  
Dual Phase

scholarly journals Development of Tailored Structure and Tensile Properties of Thermomechanical Treated Micro Alloyed Low Carbon Dual Phase Steel

2020 ◽  
Vol 11 (12) ◽  
pp. 851-866
Author(s):  
Hany Khalifa ◽  
G. M. Megahed ◽  
Taher El-Bitar ◽  
Mohamed A. Taha
Keyword(s):  
Tensile Properties ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Low Carbon

scholarly journals Investigation on the ductile fracture of a high-strength dual-phase steel with anisotropic damage mechanics model

2021 ◽  
Author(s):  
Zinan Li ◽  
Wenqi Liu ◽  
Fuhui Shen ◽  
Sebastian Münstermann ◽  
Junhe Lian
Keyword(s):  
Plastic Deformation ◽  
Ductile Fracture ◽  
Fracture Behavior ◽  
Dual Phase Steel ◽  
High Strength ◽  
Tensile Tests ◽  
Uniaxial Tensile ◽  
Dual Phase ◽  
Plasticity Model ◽  
Anisotropic Plastic

In this study, a hybrid experimental and numerical investigation is implemented to characterize the plasticity and ductile fracture behavior of a high-strength dual-phase steel. Uniaxial tensile tests are conducted along the three typical directions of rolled sheet metals for the anisotropic plastic behavior, while the hydraulic bulge test is applied for the flow behavior under equiaxial biaxial tension. Further tensile tests are conducted on various featured dog-bone specimens to study the fracture behavior of the material from the uniaxial to plane-strain tension. On the numerical side, the evolving non-associated Hill48 (enHill48) plasticity model considering anisotropic hardening and plastic strain ratio evolution is employed to describe the anisotropic plastic deformation. The extended enHill48 model with damage and fracture formulation is further calibrated and validated in the study to describe the ductile fracture behavior of the steel under various stress states. Through a comparison of the results based on the evolving anisotropic model with the isotropic Mises model, it is concluded that even for materials that show only minor initial plastic anisotropy, it could develop a non-negligible influence on the large plastic deformation and the prediction of both deformation and fracture shows profound improvement with the evolving anisotropic plasticity model.

Comparison of Behaviour of Different Variants of Hydrogenated TRIP Steels at Slow Strain Rate Tests

2019 ◽  
Vol 810 ◽  
pp. 70-75
Author(s):  
Petra Váňová ◽  
Jaroslav Sojka ◽  
Kateřina Konečná ◽  
Taťána Radkovská
Keyword(s):  
Hydrogen Embrittlement ◽  
Hydrogen Absorption ◽  
Potassium Thiocyanate ◽  
Tensile Tests ◽  
Fracture Characteristics ◽  
Trip Steels ◽  
Hydrogen Charging ◽  
Metallic Inclusions ◽  
Significant Difference ◽  
Fracture Micromechanism

The paper describes effect of hydrogen on mechanical properties and fracture characteristics of two types of C-Mn-Si TRIP steel; laboratory prepared steel TRIP 800 and commercially manufactured steel TRIP 780. TRIP steels are very promising materials thanks to their combination of a very good strength and toughness. However, these steels can be embrittled by hydrogen during technological operations related to galvanizing. That is why the knowledge of effects of hydrogen on the properties and fracture characteristics of the TRIP steels is of particular importance. In the presented study, effects of hydrogen were studied by tensile tests after electrolytical hydrogen charging. Electrolytical hydrogen charging was performed in 0.05 M solution of sulfuric acid with addition of potassium thiocyanate to promote hydrogen absorption. Hydrogen provoked embrittlement in both steel variants and changed their fracture micromechanism. Hydrogen embrittlement manifested itself mainly by a loss of plasticity. Index of hydrogen embrittlement, expressed on the basic of a relative drop of elongation to fracture, reached values about 77 % for the steel variant TRIP 800, resp. 83 % for the steel variant TRIP 780. No significant difference was observed between two steel variants studied. Concerning fractographic characteristics, steels containing hydrogen displayed quasi-cleavage fracture mostly on the edges of the sample and around elongated non-metallic inclusions.

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