Results 111 to 120 of about 158 (142)
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Annealing of a Nanostructured Bainitic Steel
Metallography, Microstructure, and Analysis, 2020Abstract This article describes a procedure for optimizing the annealed microstructure of a high Al KAB steel. The main focus is directed toward characterization of microstructural development during annealing of different phases in a nanostructured bainitic steel using high resolution transmission electron microscopy (HRTEM). This entry
Peter Kirbiš +3 more
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Preparation of nanostructured bainite in medium-carbon alloysteel
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2013Abstract Nanostructured bainite was prepared in medium-carbon Si–Al-rich alloy steel by low-temperature austempering of deformation-strengthened supercooled austenite. The deformation strengthening of supercooled austenite can depress the martensite start temperature, allowing austempering at a lower temperature to form nanostructured bainite with ...
T S Wang, F C Zhang
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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 ...
Qing-Chun Li, Hui Guo, Jian-Guo He
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Distortion in 100Cr6 and nanostructured bainite
Materials & Design, 2012A series of experiments on 100Cr6 and a nanostructured carbide-free bainitically transformed steel are performed. The effect of heat treatment conditions on the degree of distortion due to phase transformation is established. By transforming bainitically other than martensitically, cooling rate plays a major role in decreasing distortion by one order ...
Amey, C.M. +2 more
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Estimation of fracture toughness of tempered nanostructured bainite
Materials Science and Technology, 2012Fine structures consisting of a mixture of extremely thin bainite plates embedded in a matrix of austenite, are now a commercial proposition. Whereas the phase transformation theory for such structures is fairly well established, the understanding of their mechanical properties is not.
H K D H Bhadeshia
exaly +2 more sources
Regeneration technique for welding nanostructured bainite
Materials & Design, 2013Abstract High-carbon steels which are transformed into extremely fine bainite plates embedded in a matrix of carbon-enriched austenite have recently been developed, and have found commercial application in the manufacture of engineering components. However, because of the large carbon concentration, they cannot be welded and this limits the scope for
K. Fang +5 more
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Hydrogen Permeation in Nanostructured Bainitic Steel
Metallurgical and Materials Transactions A, 2016Hydrogen permeation of nanostructured bainitic steel, produced at two different transformation temperatures, i.e., 473.15 K (200 °C) BS-200 and 623.15 K (350 °C) BS-350, was determined using Devanathan–Stachurski hydrogen permeation cell and compared with that of mild steel.
Kazum, Oluwole +4 more
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Toughness variations in nanostructured bainitic steels
Materials Science and Engineering: A, 2012Abstract Outstanding combination of strength and ductility in nanostructured bainitic steels makes them prone to be used as an important engineering material. However, there is still a necessity to investigate their toughness and effective parameters. This work aims to study the fracture toughness of these group of high strength carbide free bainitic
Behzad Avishan +2 more
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Developing very hard nanostructured bainitic steel
Materials Science and Engineering: A, 2013Abstract Novel nanostructured high carbon high silicon, carbide-free bainitic steels with very high strength and good ductility have been developed in the recent decade. In this work, an alloy with a high carbon content and no manganese was designed and cast. The prepared samples were heat treated through an austempering process in the range 200–350 °
H. Amel-Farzad +5 more
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Spheroidisation of hypereutectoid state of nanostructured bainitic steel
Materials Science and Technology, 2014Nanostructured bainite is extremely resistant to severe tempering making it difficult to reduce its hardness sufficiently to allow certain processing before heat treatment into its final state. An attempt is therefore made to introduce the divorced pearlite reaction that relies on the presence of pro-eutectoid cementite in the austenite in order to ...
D. Luo +5 more
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