Results 11 to 20 of about 12,738 (228)
Effect of isothermal quenching on microstructure and hardness of GCr15 steel
Journal 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
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Crack propagation behavior of ER8 wheel steel containing upper bainite
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
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Journal of Materials Research and Technology, 2021 The effects of isothermal and pre-transformation temperatures on the microstructure and mechanical properties of ultrafine bainitic steels are investigated and theoretically analyzed by using optical microscopy, scanning electron microscopy, transmission
Chengcong Huang +4 more
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Review on the prediction of residual stress in welded steel components [PDF]
, 2020 Residual stress after welding has negative effects on the service life of welded steel components or structures. This work reviews three most commonly used methods for predicting residual stress, namely, empirical, semi-empirical and process simulation ...
Abdel Wahab, Magd +2 more
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Advances 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
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Bainite transformation under the effect of large stress in a carbide-free bainite steel
Journal 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
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Influence of boron content on the fracture toughness and fatigue crack propagation kinetics of bainitic steels [PDF]
, 2016 The relatively good combination of high strength and ductility makes bainitic steels a candidate to replace many other steels in industrial applications. However, in service, ductility and strength are not up to standard requirements.
Cabrera Marrero, José M. +4 more
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A comprehensive study on the microstructure and mechanical properties of arc girth welded joints of spiral welded high strength API X70 steel pipe [PDF]
, 2020 In the paper, the effect of welding technology on the microstructure and mechanical properties of girth welded joints was presented. Metallographic examinations based on light microscopy and SEM were conducted on girth welded joints of API X70 steel pipe.
De Waele, Wim +6 more
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Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2009 An alloy system based on iron is described in which it has been possible to create a high density of interfaces by heat treatment alone. The resulting structure consists of a mixture of slender platelets of bainitic ferrite, just 20–40 nm in thickness, embedded in a matrix of carbon-enriched austenite.
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Latest developments in mechanical properties and metallurgical features of high strength line pipe steels [PDF]
, 2013 In response to the increasing demand to improve both transportation efficiency and performance, the steel pipe industry has conducted extensive efforts to develop line pipe steel grades with superior metallurgical and mechanical (strength, toughness and ...
Belato Rosado, Diego +3 more
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