Hydrogen Embrittlement and Hydrogen Trapping Behaviour in Advanced High Strength Steels

Ali Smith

doi:10.4028/www.scientific.net/MSF.1016.1344

Paper Titles

Spinning Formability of Al-Mg-Si Alloy
p.1318

Deformation Behavior of Single Particle Cold Spray Ti-6Al-4V Splats
p.1325

Effects of Microstructure on the Hydrogen Embrittlement Resistance of Ultra High Strength Martensitic Steel Sheets
p.1331

Optimization of Preform for Stub Axle Forging Using Simulation Software
p.1337

Hydrogen Embrittlement and Hydrogen Trapping Behaviour in Advanced High Strength Steels
p.1344

Properties of Alumina Coatings Deposited by Detonation Spraying
p.1350

Experimental Study and Modelling of the Ferritic Steel Anisotropic Behavior under Associated and Non-Associated Flow Rule
p.1356

Effect of Silicon Content on the Decomposition of Austenite in 0.4C Steel during Quenching and Partitioning Treatment
p.1361

Microstructure and Shape Memory Behavior of Ti-18Nb-6Zr (at.%) Alloy
p.1368

HomeMaterials Science ForumMaterials Science Forum Vol. 1016Hydrogen Embrittlement and Hydrogen Trapping...

Hydrogen Embrittlement and Hydrogen Trapping Behaviour in Advanced High Strength Steels

Abstract:

Modern advanced high strength steels (AHSS) for the automotive sector often contain retained austenite which promotes remarkable combinations of strength and ductility. These high strength steels may however be subject to a risk of hydrogen embrittlement. For the current contribution, hydrogen trapping and embrittlement behaviour were investigated in AHSS compositions having different levels of retained austenite. Hydrogen permeation tests revealed that hydrogen diffusion was slower for increased levels of retained austenite, being controlled most likely by reversible trapping at austenite-matrix interfaces. External hydrogen embrittlement tests via step loading also revealed that resistance to hydrogen was lower for increased levels of retained austenite. It was suggested that during step loading the hydrogen accumulated at austenite-matrix interfaces, leading to cracking when the applied stress was high enough.

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Periodical:

Materials Science Forum (Volume 1016)

Pages:

1344-1349

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1016.1344

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Online since:

January 2021

Authors:

Ali Smith*

Keywords:

Advanced High Strength Steel, Diffusion, Hydrogen Embrittlement, Hydrogen Trapping

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