Results 11 to 20 of about 2,753,720 (285)

Effect of isothermal and pre-transformation temperatures on microstructure and properties of ultrafine bainitic steels

open access: yesJournal 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
doaj   +4 more sources

Effect of Isothermal Transformation Times below Ms and Tempering on Strength and Toughness of Low-Temperature Bainite in 0.53 C Bainitic Steel. [PDF]

open access: yesMaterials (Basel), 2020
This study aims to investigate the microstructures, strength, and impact toughness of low-temperature bainite obtained by isothermal transformation at temperature below Ms (Martensite Starting temperature) for different times and tempering process in 0 ...
Liu E, Li Q, Naseem S, Huang X, Huang W.
europepmc   +2 more sources

Neutron and hard X-ray diffraction studies of the isothermal transformation kinetics in the research reactor fuel candidate U-8 wt%Mo. [PDF]

open access: yesJ Appl Crystallogr, 2016
The nuclear fuel candidate U–8 wt%Mo has been investigated by means of neutron and hard X-ray diffraction, revealing the isothermal transformation kinetics of the high-temperature γ-UMo phase into its thermal equilibrium microstructures.
Säubert S   +5 more
europepmc   +2 more sources

Kinetic models of multiple-stage martensite transformation and subsequent isothermal bainite formation excluding ε-carbide precipitation in intercritical quenching and partitioning steels

open access: yesMaterials & Design, 2019
The kinetic models of multiple-stage martensite transformation and subsequent isothermal bainite formation were investigated in intercritical quenching and partitioning steels. The modified K-M model that considering instantaneous kinetic characteristics
Fei Peng   +3 more
doaj   +3 more sources

Stress measurement in the iron oxide scale formed on pure Fe during isothermal transformation by in situ high-temperature X-ray diffraction

open access: yesCorrosion Science, 2021
The stress development in the iron oxide scale formed on pure Fe during isothermal oxidation at 700 °C followed by isothermal transformation at 500 or 380 °C was measured by in situ high-temperature X-ray diffraction with the sin2ψ method.
S. Hayashi   +4 more
semanticscholar   +1 more source

Precipitation Behavior of ω Phase and ω→α Transformation in Near β Ti-5Al-5Mo-5V-1Cr-1Fe Alloy during Aging Process

open access: yesMetals, 2021
In this work, the precipitation behavior of the ω phase and ω→α transformation in Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) alloy was investigated during isothermal aging at 450 °C.
Yi Guo   +5 more
doaj   +1 more source

Post-dynamic α to β phase transformation and reverse transformation of Ti-5Al-3V alloy after hot deformation in two phase region

open access: yesMaterials & Design, 2020
The microstructural evolutions and resulted mechanical responses during isothermal holding of multipass hot deformation are essential aspects in the processing of high performance titanium alloys. In this work, isothermal holding testing was performed on
Xiankun Ji   +7 more
doaj   +1 more source

Study of the isothermal bainitic transformation and austenite stability in an advanced Al-rich medium-Mn steel

open access: yesArchives of Civil and Mechanical Engineering, 2022
Isothermal bainitic transformation of a lean medium-Mn steel containing (in mass%) 0.18C–3.6Mn–1.7Al–0.23Si–0.2Mo–0.04–Nb after full austenitization at 1100 ºC was studied by means of high resolution dilatometry.
Morawiec   +4 more
semanticscholar   +1 more source

In-situ observation of phase transformation during heat treatment process of high-carbon bainitic bearing steel

open access: yesJournal of Materials Research and Technology, 2022
Phase transformation during austenitizing process and heat treatment process under slow cooling of high-carbon bainitic bearing steel is still unclear. Direct nano-scale microscopic observation and in-situ X-ray diffraction investigations have been used ...
Dongyun Sun   +6 more
doaj   +1 more source

Development of Nanobainitic Microstructures in Carbo-Austempered Cast Steels: Heat Treatment, Microstructure and Properties

open access: yesMetals, 2020
Carburizing implies the existence of a carbon gradient from the surface to the core of the steel, which in turn will affect both the critical temperature for austenite formation and the kinetics of the bainitic transformation during the austempering ...
Oscar Ríos-Diez   +4 more
doaj   +1 more source

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