Hydrogen-assisted decohesion associated with nanosized grain boundary κ-carbides in a high-Mn lightweight steel

MN Elkot, B Sun, X Zhou, D Ponge, D Raabe - Acta Materialia, 2022 - Elsevier
While age-hardened austenitic high-Mn and high-Al lightweight steels exhibit excellent
strength-ductility combinations, their properties are strongly degraded when mechanically …

[HTML][HTML] Substantially enhanced homogeneous plastic flow in hierarchically nanodomained amorphous alloys

G Wu, S Liu, Q Wang, J Rao, W Xia, YQ Yan… - Nature …, 2023 - nature.com
To alleviate the mechanical instability of major shear bands in metallic glasses at room
temperature, topologically heterogeneous structures were introduced to encourage the …

[HTML][HTML] Elemental partitioning-mediated crystalline-to-amorphous phase transformation under quasi-static deformation

G Wu, C Liu, YQ Yan, S Liu, X Ma, S Yue… - Nature …, 2024 - nature.com
The transformation induced plasticity phenomenon occurs when one phase transforms to
another one during plastic deformation, which is usually diffusionless. Here we present …

Heterogenous structure and formation mechanism of white and brown etching layers in bainitic rail steel

G Gao, M Liu, X Gui, J Hu, J Luan, Z Jiao, X Wang… - Acta Materialia, 2023 - Elsevier
The failures of conventional pearlitic rail steels are strongly affected by the formation of hard
and brittle white and brown etching layers (WEL and BEL, respectively) on the rail raceway …

Role of deformation on the hydrogen trapping in the pearlitic steel

ZH Li, TT Sasaki, R Ueji, Y Kimura, A Shibata… - Scripta Materialia, 2024 - Elsevier
Improving hydrogen embrittlement resistance is a prerequisite for expanding the application
of high-strength steels. A high-strength deformed pearlitic steel exhibits excellent hydrogen …

Cementite decomposition in 100Cr6 bearing steel during high-pressure torsion: Influence of precipitate composition, size, morphology and matrix hardness

S Kiranbabu, PY Tung, L Sreekala, TS Prithiv… - Materials Science and …, 2022 - Elsevier
Premature failure of rail and bearing steels by White-Etching-Cracks leads to severe
economic losses. This failure mechanism is associated with microstructure decomposition …

[HTML][HTML] Hydrogen-enhanced deformation in pearlite

R Niu, H Li, PY Liu, P Burr, Y Feng, HW Yen, C Huang… - Acta Materialia, 2024 - Elsevier
Hydrogen-induced degradation of pipeline steels is a serious safety challenge for the
transport of hydrogen. Steel pipes contain a large proportion of the pearlite phase, which …

[HTML][HTML] Formation mechanism of brown etching layers in pearlitic rail steel

PY Tung, X Zhou, L Morsdorf, M Herbig - Materialia, 2022 - Elsevier
Abstract The formation of White Etching Layers (WELs) in rails can lead to the initiation of
microcracks, thus reducing the service time of rails. However, the WEL formation mechanism …

Decomposition-resistant carbonitride precipitates in X30CrMoN15-1 high-nitrogen bearing steel deformed by high-pressure torsion

S Kiranbabu, Y Qin, L Sreekala, SM Das… - Materials Science and …, 2023 - Elsevier
Abstract The X30CrMoN15-1 high-nitrogen bearing steel is far more resistant against
premature rolling contact fatigue (RCF) failures than the conventional 100Cr6 bearing steel …

Correlation of microstructure and hardness distribution of high-speed train wheels under original and service statuses

Z Liu, L Yang, G Zhang, L Zhao, Q Shao… - Engineering Failure …, 2024 - Elsevier
High-speed train wheels have complex service environments during wheel–rail contact, and
a comprehensive understanding of the microstructural inhomogeneity at the rim is critical for …