Mechanism of subsurface microstructural fatigue crack initiation during high and very-high cycle fatigue of advanced bainitic steels

G Gao, R Liu, Y Fan, G Qian, X Gui, RDK Misra… - Journal of Materials …, 2022 - Elsevier
Advanced bainitic steels with the multiphase structure of bainitic ferrite, retained austenite
and martensite exhibit distinctive fatigue crack initiation behavior during high cycle …

Role of retained austenite with different morphologies on sub-surface fatigue crack initiation in advanced bainitic steels

G Gao, R Liu, K Wang, X Gui, RDK Misra, B Bai - Scripta Materialia, 2020 - Elsevier
We describe here the distinct high cycle fatigue properties of advanced bainitic steels to
elucidate the significant role of retained austenite with different morphologies on sub-surface …

Quantitative phase analysis of martensite-bainite steel using EBSD and its microstructure, tensile and high-cycle fatigue behaviors

MS Baek, KS Kim, TW Park, J Ham, KA Lee - Materials Science and …, 2020 - Elsevier
This study conducted a quantitative analysis of the martensite/bainite (M/B; bainitic structure
region) fraction of martensite-bainite steel using electron back-scatter diffraction (EBSD) …

Ratchetting-fatigue behavior of a 42CrMo steel under near-yield mean stress

G Sui, Z Wang, X Fang, G Gao, C Zhao, Y Guo… - International Journal of …, 2023 - Elsevier
Abstract 42CrMo high-strength structural steel is widely used to manufacture the bolt
fasteners of engineering machinery, which are subjected to cyclic loading with a near-yield …

Evolution of dislocation density in bainitic steel: Modeling and experiments

SH He, BB He, KY Zhu, MX Huang - Acta Materialia, 2018 - Elsevier
Bainitic steels with intensive lath boundaries demonstrate an excellent combination of
strength and toughness. The bainite lath has an inhomogeneous distribution of dislocations …

Roles of microstructures in high-cycle fatigue behaviors of 42CrMo high-strength steel under near-yield mean stress

G Sui, Z Wang, J Li, C Zhao, F Jiang, H Li - International Journal of Fatigue, 2023 - Elsevier
In this study, high-cycle SN characteristics and fatigue cracking behaviors under near-yield
mean stress of 42CrMo steel with two different fine/coarse-grain tempered sorbite/bainite …

High cycle fatigue properties and fatigue crack propagation behavior of a bainite railway axle steel

T Zhang, Y Wang, C Zhang, L Wang, H Di… - International Journal of …, 2023 - Elsevier
Carbide-free bainite (CFB) steel with metastable austenite and refined microstructures has
been demonstrated to be a promising alternative to conventional pearlitic rail and wheel …

Effect of inclusion and microstructure on the very high cycle fatigue behaviors of high strength bainite/martensite multiphase steels

G Gao, Q Xu, H Guo, X Gui, B Zhang, B Bai - Materials Science and …, 2019 - Elsevier
We studied the mutual and relative effect of inclusion and microstructure on very high cycle
fatigue (VHCF) behavior of bainite/martensite (B/M) multiphase steel by designing four …

Small fatigue crack propagation rate and behaviours in a powder metallurgy superalloy: Role of stress ratio and local microstructure

Q Yang, X Yang, W Huang, Y Shi, D Shi - International Journal of Fatigue, 2022 - Elsevier
The role of stress ratio and local microstructure on small crack propagation (0.065–1.0 mm)
behaviours in superalloy FGH4096 were investigated using the Photomicroscopy method …

Comparative study on the crack growth behaviours of E690 steel and heat-affected zone microstructures under cathodic potential in artificial seawater based on …

Y Li, Y You, X Lv - Corrosion Science, 2022 - Elsevier
The crack growth behaviours of E690 steel and HAZ microstructures under cathodic
potential in artificial seawater were investigated and compared. The crack growth …