Results 1 to 10 of about 13,871 (155)

Improving mechanical and wear properties of multiphase M50 steel by tailoring bainite morphology

open access: yesJournal of Materials Research and Technology, 2023
The martensite/bainite multiphase microstructure has shown excellent strength-toughness matching compared with the traditional martensitic microstructure.
Yuchen Du   +4 more
doaj   +1 more source

Microstructure characteristics and mechanical properties of deposited metals with different types of bainite

open access: yesJournal of Materials Research and Technology, 2023
In this work, three types of bainite microstructure have been gained in the deposited metals by adjusting the Ni content (1 wt %, 2.5 wt %, and 4 wt %). The microstructure feature of different types of bainite has been characterized by optical microscope,
Jingwu Liu   +4 more
doaj   +1 more source

Bainite kinetic energy, activation energy, and tribological behavior of austempered AISI4340 steel

open access: yesJournal of Materials Research and Technology, 2021
A study has been made of the effect of heat-treatment on the microstructures of commercial quality AISI4340 steel after austenitizing at 1128 K and austempering at temperatures ranging from 561 K to 644 K.
Xue Han   +6 more
doaj   +1 more source

Effect of Austenite Grain Size on the Bainitic Transformation in a 690 MPa Grade High-Strength Multi-Functional Construction Steel

open access: yesMetals, 2022
A high-strength low-carbon construction structural steel was investigated in the laboratory. The various austenite grain sizes were obtained by austenitizing the steel at different temperatures.
Zhenye Chen   +5 more
doaj   +1 more source

Bainite Transformation-Kinetics-Microstructure Characterization of Austempered 4140 Steel

open access: yesMetals, 2020
Bainite transformation is a kinetic process that involves complex solid diffusion and phase structure evolution. This research systematically studies the bainite transformation of austempered 4140 steel in a wide range of isothermal temperatures, in ...
Jian G. Zhu   +4 more
doaj   +1 more source

Effect of martensite pre-quenching on bainite transformation kinetics, martensite/bainite duplex microstructures, mechanical properties and retained austenite stability of GCr15 bearing steel

open access: yesJournal of Materials Research and Technology, 2021
In this work, effect of martensite pre-quenching on the subsequent bainite transformation kinetics of GCr15 bearing steel has been investigated by means of dilatometry.
Xiaohui Lu   +4 more
doaj   +1 more source

Effect of isothermal quenching on microstructure and hardness of GCr15 steel

open access: yesJournal of Materials Research and Technology, 2021
Through hardness measurement and microstructure observation, the effect of isothermal quenching on the bainite transformation, the size and area fraction of carbides in GCr15 steel was studied. Results show that, at the solid solution temperature of 860 °
Y. Su   +5 more
doaj   +1 more source

Bainite transformation under the effect of large stress in a carbide-free bainite steel

open access: yesJournal of Materials Research and Technology, 2023
The effects of large stress on bainite transformation and microstructure were investigated by dilatometry, SEM and EBSD. The results show that the effect of large stress on bainite transformation includes two parts: mechanical driving force and prior ...
Mingxing Zhou   +5 more
doaj   +1 more source

Crack propagation behavior of ER8 wheel steel containing upper bainite

open access: yes工程科学学报, 2020
In recently years, high-speed and heavy-haul railway technology has been rapidly developed and widely used in China. Pearlite steel is usually used in railway wheels, and its structure is composed of pearlite and ferrite.
Qian LI   +4 more
doaj   +1 more source

Effect of Bainite Volume Fraction on Deformability of Mesostructures for Ferrite/Bainite Dual-Phase Steel

open access: yesAdvances in Materials Science and Engineering, 2020
To obtain high strength and excellent deformability for ferrite/bainite dual-phase (F/B DP) pipeline steel for gas pipelines based on strain-based design, the volume fractions of ferrite and bainite should be considered first.
Gui-ying Qiao   +4 more
doaj   +1 more source

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