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Bainitic transformation of steels
Journal of Materials Science Letters, 1986Presentation des derniers resultats experimentaux: courbes TTT et etude microstructurale par microscopie electronique a balayage relatifs a la transformation bainitique de l'acier non allie (0,38 C-0,23 Si-1,4 Mn-0,22 Cr-0,18 Ni)
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Understanding of the Bainite Transformation in a Nano-Structured Bainitic Steel
Solid State Phenomena, 2011A 0.79C-1.5Si-1.98Mn-0.98Cr-0.24Mo-1.06Al-1.58Co (wt%) steel was isothermally heat treated at 200°C for 10 days to form a nano-scale bainitic microstructure consisting of nanobainitic ferrite laths with high dislocation density and retained austenite films.
Peter Hodgson +4 more
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Analysis on bainite transformation in reheated low-carbon bainite weld metals
Materials Science and Technology, 2017A combination of laser scanning confocal microscopy (LSCM) and dilatometry was utilised to simultaneously qualitatively analyse the morphological evolution of bainite by examination of in situ observed micrographs and to quantitatively investigate the amount of bainite transformation by studying dilatometry data.
Gaojun Mao, Rui Cao, Jianhong Chen
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Effects of ausforming strain on bainite transformation in nanostructured bainite steel
International Journal of Minerals, Metallurgy, and Materials, 2017The effects of ausforming strain on bainite transformation in high-carbon low-alloy nanobainite steel were investigated using a Gleeble 3500 thermomechanical simulator machine. The bainite transformation speed at 300°C was found to be accelerated by ausforming at 300, 600, and 700°C under applied strains ranging from 10% to 50% followed by isothermal ...
Hong-liang Fan +4 more
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On Bainite Transformation Kinetics and Mechanism
Materials Science Forum, 2007The platelike bainitic ferrite growth rates were calculated by two modified diffusional models. Good agreements between experimental and theoretical results are found in Fe-0.59C wt.%, Fe-0.81C wt.% and Fe-0.478C-4.87Ni wt.% alloys. A slowing down effect due to the alloying element Mo is emphasized in Fe-0.69C-1.8Ni-0.8Mo wt.% alloy.
Si Xin Zhao, Wei Wang, Da Li Mao
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The bainite transformation: unresolved issues
Materials Science and Engineering: A, 1999Abstract A great deal of research, over many decades since the discovery of bainite, has revealed substantial information about the mechanism of the bainite transformation in steels. Elements of the theory are now routinely being used in many parts of the world in the design of novel alloys and in the interpretation of a variety of experimental data.
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2004
«The mechanism of bainite formation has been the subject of numerous original research papers and reviews for almost a century hut without any signs of controversies being resol ved. For beginners and even for experts in related fields this wealth of information has been very confusing...» M Hillert in Preface to the Viewpoint Set on: Bainite“[Hil02 ...
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«The mechanism of bainite formation has been the subject of numerous original research papers and reviews for almost a century hut without any signs of controversies being resol ved. For beginners and even for experts in related fields this wealth of information has been very confusing...» M Hillert in Preface to the Viewpoint Set on: Bainite“[Hil02 ...
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Accelerated bainitic transformation during cyclic austempering
Journal of Materials Science, 2007Austempering is an important thermal processing operation, where strong and tough bainitic steel is produced in a single heat treatment [1, 2]. During the austempering process, the steel is first austenitized and then cooled rapidly just above the martensite start temperature until bainite nucleates and grows, usually until the transformation stops and
Vivekanand Sista +2 more
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Stress-affected transformation to lower bainite
Journal of Materials Science, 1996Experiments have been conducted on the formation of lower bainite under the influence of an externally applied stress. It was found that both the ferritic and cementite components of the microstructure respond to the stress. The ferrite plates that grow appear to comply best with the applied stress, leading to an aligned microstructure.
L. C. Chang, H. K. D. H. Bhadeshia
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Metallographic observations of bainite transformation mechanism
Materials Science and Technology, 1995AbstractMetallographic observation has directly revealed the continuous motion of the bainite/austenite interface in a manner consistent with the achievement of thermoelastic equilibrium. Further observation demonstrates that the shear deformation associated with the growth of bainite can induce mechanical twinning in the surrounding microstructure in ...
L.C. Chang, H. K. D. H. Bhadeshia
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