Role of Microstructure in Susceptibility to Hydrogen Embrittlement of X70 Microalloyed Steel

Daniel Hejazi; Ahmed A. Saleh; Ayesha Haq; Druce Dunne; Andrzej Calka; Azdiar Gazder; Elena V. Pereloma

doi:10.4028/www.scientific.net/MSF.783-786.961

Paper Titles

Development of Hot Rolling Schedules for Lean Alloyed Pipeline Steel X80 Produced on Continuous Mill 2000
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Low-Cycle Fatigue Behavior and Microstructural Evolution of the Fe–30Mn–4Si–2Al Alloy
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Assessment of Hydrogen Uptake and Permeation in AHSSs
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Development of Hollow Iron Ore Agglomerate and its Characterization
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Role of Microstructure in Susceptibility to Hydrogen Embrittlement of X70 Microalloyed Steel
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Effects of Thermomechanical Processing on Uniformity of Microstructure and Properties of AHSS
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EBSD Study of the Microstructural Evolution during Hot Compression Testing of a Superduplex Steel
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Complex Microstructural Banding of Continuously Cooled Carbide-Free Bainitic Steels
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Physical Metallurgy Related to the Thermomechanical Process of Hot Rolling of Nb Microalloyed Steel Beams: Prediction of Mechanical Properties
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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Role of Microstructure in Susceptibility to...

Role of Microstructure in Susceptibility to Hydrogen Embrittlement of X70 Microalloyed Steel

Abstract:

The effect of phases and steel processing on hydrogen uptake (diffusible and residual), surface and internal damage were evaluated using optical and scanning electron microscopy. The results have shown the fastest formation of blisters in ferrite-pearlite microstructure of strip, followed by equaixed ferrite-pearlite microstructure in normalised condition, then by ferrite-bainite microstructure. No blistering was observed in heat affected zone samples for up to 24 hrs charging. Analysis of hydrogen-induced cracking using electron back scattering diffraction has revealed that crack propagation has predominantly intragranular character without a clear preference on {001}, {110}, {112} and {123} planes and is independent of the steel microstructure and prior processing.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

961-966

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.783-786.961

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Online since:

May 2014

Authors:

Daniel Hejazi, Ahmed A. Saleh, Ayesha Haq, Druce Dunne, Andrzej Calka, Azdiar Gazder, Elena V. Pereloma*

Keywords:

Electrolytic Charging, Electron Back Scattering Diffraction, Energy Dispersive X-Ray Spectroscopy, Hydrogen Induced Cracking, Microalloyed Steel

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