Results 181 to 190 of about 59,106 (209)

Lengthening kinetics of ferrite and bainite sideplates

Metallurgical Transactions, 1973
The rate of lengthening of ferrite and bainite sideplates and the radius of curvature of the plate edges were measured as a function of reaction temperature in three Fe-C alloys. These data were analyzed on the basis of an equation due to Trivedi. The analysis proved that the mobility of the sideplate edges is limited.
E. P. Simonen, H. I. Aaronson, R. Trivedi   +2 more
openaire   +1 more source

Transformation of austenite into bainitic ferrite and martensite

Steel Research, 1996
The stress induced martensitic transformation in the upper metastable intermediate state of γ-α-transformation in ferrous materials, structured as ferritic bainite, is discussed. The fibrous structured ferritic bainite consists of retained austenite and ferrite platelets growing in the [111]α//[101]γ direction.
openaire   +1 more source

The Nanohardness of Acicular Ferrite and Bainitic Ferrite in Low Carbon Microalloying Steel

Materials Science Forum, 2007
Dynamic continuous stiffness measurement (CSM) nanoindentation method was applied to measure nanohardness in low carbon microalloying steel. The matrix hardness for quenched phase and acicular ferrite calculated through analysis of curves is less fluctuated than the raw results, which shows that the analysis of the curves is helpful for determining ...
Cheng Jia Shang, X. Liang, Xue Min Wang, Xin Lai He, H. Liu   +4 more
openaire   +1 more source

Morphology and growth process of bainitic ferrite in steels

Metals and Materials, 1998
The morphologies and the formation mechanisms of isothermally transformed Widmanstatten ferrite and bainite in various steels were investigated. Widmanstatten ferrite often grew from the grain boundary ferrite allotriomorph formed by a diffusional mechanism in the temperature range of the upper C-curve, whereas, bainite grew directly from an austenite ...
Yun-Chul Jung, Sung-Joon Kim, Yasuya Ohmori   +2 more
openaire   +1 more source

Comparison of the fatigue performance of ferrite–pearlite and ferrite–bainite dual-phase steels

Journal of Marine Science and Technology, 2020
Recent demands for large vessels and deep water exploration have increased the requirements for thicker plates to ensure the sufficient strength of such structures. The use of thicker plates, however, has an adverse influence on the fatigue performance.
Jeong Yeol Park, Dong Jin Oh, Myung Hyun Kim   +2 more
openaire   +1 more source

Carbon content of bainite ferrite in 40CrMnSiMoV steel

Materials Chemistry and Physics, 2009
A refined method for analysing X-ray diffraction spectrum was used to determine the carbon content of bainite ferrite in 40CrMnSiMoV steel. The supersaturated carbon concentration linearly decreases with increase of isothermal holding time at 310 °C due to the carbon repartition and carbide precipitation.
Kang, M.K., Ai, Y.L., Zhang, M.X., Yang, Y.Q., Zhu, M., Chen, Y.   +5 more
openaire   +4 more sources

Plastic Behavior of Ferrite–Pearlite, Ferrite–Bainite and Ferrite–Martensite Steels: Experiments and Micromechanical Modelling

Metals and Materials International, 2019
In this work, low carbon low alloy steel specimens were subjected to suitable heat treatment schedules to develop ferrite–pearlite (FP), ferrite–bainite (FB) and ferrite–martensite (FM) microstructures with nearly equal volume fraction of hard second phase or phase mixture.
Saroj Kumar Basantia, Ankita Bhattacharya, Niloy Khutia, Debdulal Das   +3 more
openaire   +1 more source

Changes in the fracture strength parameters of ferritic–bainitic and bainitic pipe steels during operation

Russian Metallurgy (Metally), 2016
The fracture strength and the sensitivity to delayed fracture of the pipes in oil-trunk pipelines that are made of ferritic–bainitic and bainitic steels are studied. The results of modeling of the delayed brittle fracture of pipe steel during a simultaneous action of mechanical stresses and a corrosive medium are presented.
V. N. Zikeev, G. A. Filippov, I. P. Shabalov, O. V. Livanova, D. M. Solov’ev   +4 more
openaire   +1 more source

On the Microstructural Basis of Cleavage Fracture Initiation in Ferritic and Bainitic Steels

Journal of Engineering Materials and Technology, 1984
The microstructural basis of the critical tensile stress criterion of cleavage fracture is discussed. It is shown that cleavage can be carbide induced in bainitic steels as well as in ferritic steels. The plastic work expended in brittle crack propagation is shown to be somewhat smaller for bainitic steels than for ferritic steels.
Wallin, Kim, Törrönen, Kari, Saario, Timo   +3 more
openaire   +3 more sources

Role of carbon and alloying elements in the formation of bainitic ferrite

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2004
One approach to the prediction of the carbon content of austenite, remaining after the precipitation of bainitic ferrite, is based on the assumption that bainitic ferrite during growth inherits the carbon content of the parent austenite. An alternative approach is based on the assumption that bainitic ferrite grows with a low carbon content and there ...
L Höglund, J Ågren
exaly   +2 more sources