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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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Novel method for refinement of retained austenite in micro/nano-structured bainitic steels [PDF]
A comparative study was conducted to assess the effects of two different heat treatments on the amount and morphology of the retained austenite in a micro/nano-structured bainitic steel.
Hu, F.+5 more
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Latest developments in mechanical properties and metallurgical features of high strength line pipe steels [PDF]
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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F.G. Caballero would like to thank Spanish Ministerio de Ciencia y Tecnologı ´a for the financial support in the form of a Ramo´n y Cajal contract (Programa RyC 2002).
H. K. D. H. Bhadeshia, F. G. Caballero
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Variant Pairing of Lath Bainite and Martensite in an Ultra-High-Strength Steel
The mixed structure of lath bainite and martensite was obtained by isothermal transformation tests at 698 K, 673 K and 623 K in ultra-high-strength steel. The interweaving mode of lath bainite and martensite was revealed by colored metallography and band
Meiying Li+3 more
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Influence of boron content on the fracture toughness and fatigue crack propagation kinetics of bainitic steels [PDF]
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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Strain tempering of bainite [PDF]
In the present investigation the strain tempering of bainite has been carried out with (EN 24) a medium carbon low alloy steel. The specimens were austenitized at 850°C and isothermally transformed at 300°, 360°, and 400°C to produce bainite, strained and tempered in the range 100° to 400°C. The bainite formed at 360°C has been specifically examined by
M. K. Fondekar, A. M. Rao, A. K. Mallik
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New Multiphase CP and DP 1000 MPa strength level grades for improved performance after hot forming [PDF]
Pure martensitic steels have after hot forming limited performance in terms of rest ductility which limits the application in crash relevant parts. New steel grades were designed in the EU project HOTFORM including the corresponding process routes. These
Aranguren, Iñigo+6 more
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Bainite kinetic energy, activation energy, and tribological behavior of austempered AISI4340 steel
A study has been made of the effect of heat-treatment on the microstructures of commercial quality AISI4340 steel after austenitizing at 1128 K and austempering at temperatures ranging from 561 K to 644 K.
Xue Han+6 more
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