Results 31 to 40 of about 731 (178)

Tempering of hard mixture of bainitic ferrite and austenite [PDF]

Materials Science and Technology, 2004
The authors are grateful to the Engineering and Physical Sciences Research Council for supporting this research. They are also grateful to Miss P. Swannell for her general help with the experiments and to Dr M. Vickers for help with the interpretation of X-ray data.
García Mateo, Carlos, Peet, M., García Caballero, Francisca, Bhadeshia, H. K. D. H.   +3 more
openaire   +2 more sources

Intragranular ferrite morphologies in medium carbon vanadium-microalloyed steel [PDF]

Journal of Mining and Metallurgy. Section B: Metallurgy, 2013
The aim of this work was to determine TTT diagram of medium carbon V-N micro-alloyed steel with emphasis on the development of intragranular ferrite morphologies.
Fadel A., Glišić D., Radović N., Drobnjak D.   +3 more
doaj   +1 more source

Influence of niobium microalloying on the thermal stability of medium-carbon carbide-free bainitic steel

Journal of Materials Research and Technology, 2021
This paper investigates the influence of niobium on the thermal stability of ultra-fine bainite microstructures and their mechanical properties by means of an isothermal transformation at 340 °C, followed by tempering in the range of 200–700 °C for two ...
Xinpan Yu, Huibin Wu, Youyou Zhang, Rui Yuan, Yang Gu, Yuhui Feng   +5 more
doaj   +1 more source

Improving strength and ductility via ausforming combined with austempering through deformation-induced bainite refinement

Journal of Materials Research and Technology
The refinement of bainitic ferrite laths is one of the most critical ways to improve the combination of strength and ductility. However, low-temperature bainitic transformations in the microstructural evolution of carbide-free bainite in high-carbon ...
Jianhua Li, Peng Chen, Ning Xu, Dapeng Yang, Hongshuang Di, Hongliang Yi   +5 more
doaj   +1 more source

Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel

Archives of Metallurgy and Materials, 2015
The aim of the study was to investigate the thermal stability of the nanostructure produced in X37CrMoV5-1 tool steel by austempering heat treatment consisted of austenitization and isothermal quenching at the range of the bainitic transformation.
Skołek E., Marciniak S., Świątnicki W.A.   +2 more
doaj   +1 more source

In-situ SEM observation on fracture behavior of austempered silicon alloyed steel [PDF]

China Foundry, 2009
Crack initiation, propagation and microfracture processes of austempered high silicon cast steel have been investigated by using an in-situ tensile stage installed inside a scanning electron microscope chamber.
Chen Xiang, Vuorinen Esa, Grahn Jonny
doaj  

Enhanced stretch flangeability and crack propagation behavior of an 1100 MPa grade TRIP-aided bainitic ferrite steel

Journal of Materials Research and Technology, 2023
In order to face the challenges of lightweight, safety, and emission reduction in the automotive industry, transformation-induced plasticity aided bainitic ferrite (TBF) steel was fabricated by controlling the size and shape of bainitic ferrite and ...
Yuan Wang, Yunbo Xu, Yu Wang, Jiayun Zhang, Chengyu Guo, Xu Wang, Wenzhu Zhao, Hongliang Liu   +7 more
doaj   +1 more source

Carbon rejection triggered by lattice contraction at low-temperature making nano-bainitic steel toughener

Materials Research Letters
In the steel industry, enhancing the toughness of the material often reduces strength. This study employs shallow cryogenic treatment on high-carbon nano-bainitic steel, inducing lattice shrinkage via cryogenic contraction stress.
Xiaojun Gao, Dongyun Sun, Chenghao Song, Zhiyuan Liang, Xinliang Gao, Yanguo Li, Zhinan Yang, Fucheng Zhang   +7 more
doaj   +1 more source

Assessing the scale contributing factors of three carbide-free bainitic steels: A complementary theoretical and experimental approach

Materials & Design, 2021
The bainitic ferrite plate thickness is the main parameter that controls the strength of this type of microstructures. Such thickness has been proved to mainly depend on the austenite yield strength, the driving force for the transformation and the ...
Adriana Eres-Castellanos, Javier Hidalgo, Muftah Zorgani, Mohammad Jahazi, Isaac Toda-Caraballo, Francisca G. Caballero, Carlos Garcia-Mateo   +6 more
doaj   +1 more source

Effect of Dislocation Density on Deformation Behavior of Super Strong Bainitic Steel

Journal of Advanced Materials in Engineering, 2017
Presence of nanoscale bainitic ferrites and high carbon retained austenites that are stable at ambient temperature within the microstructures of super strong bainitic steels makes it possible to achieve exceptional strengths and ductility properties in ...
B. Avishan
doaj   +2 more sources