Results 21 to 30 of about 12,738 (228)

Bainite kinetic transformation of austempered AISI 6150 steel

open access: yesJournal of Materials Research and Technology, 2020
This research studies the kinetic transformation and austempering temperature effect on the morphologies of bainite for AISI 6150 steel. A minimum of 10 different holding times for each austempering temperature were utilized.
Xue Han   +6 more
doaj   +1 more source

Towards the ab initio based theory of the phase transformations in iron and steel [PDF]

open access: yes, 2017
Despite of the appearance of numerous new materials, the iron based alloys and steels continue to play an essential role in modern technology. The properties of a steel are determined by its structural state (ferrite, cementite, pearlite, bainite ...
Gornostyrev, Yu. N.   +2 more
core   +3 more sources

Continuous Cooling Transformation Diagrams of 2.25Cr-1Mo-0.25V Submerged-Arc Weld Metal and Base Metal

open access: yesMetals, 2020
The transformation behavior and microstructural evolution during continuous cooling within the heat affected zone between the weld beads of a 2.25Cr-1Mo-0.25V all-weld metal and the corresponding 2.25Cr-1Mo-0.25V base metal were investigated by means of ...
Hannah Schönmaier   +6 more
doaj   +1 more source

Effect of Ni addition on bainite microstructure of low-carbon special bar quality steels and its influence on CCT diagrams

open access: yesJournal of Materials Research and Technology, 2021
This work presents the effect of Ni content on the bainite morphology and in the mechanical properties of low-carbon special bar quality steels. Four steel ingots with the same base chemical composition, having only Ni content as their main difference ...
José Britti Bacalhau   +1 more
doaj   +1 more source

Variant Pairing of Lath Bainite and Martensite in an Ultra-High-Strength Steel

open access: yesMetals, 2022
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
doaj   +1 more source

The impact of hydrogen on the ductility loss of bainitic Fe–C alloys [PDF]

open access: yes, 2016
The influence of hydrogen on the mechanical properties of generic lab-cast Fe-C bainitic alloys is studied by tensile tests on notched samples. The bainitic microstructure is induced in a 0.2% C and 0.4% C Fe-C alloy by an appropriate heat treatment. The
Depover, Tom   +2 more
core   +1 more source

Initiation of hydrogen induced cracks at secondary phase particles [PDF]

open access: yes, 2020
The goal of this work is to propose a general mechanism for hydrogen induced crack initiation in steels based on a microstructural study of multiple steel grades.
Claeys, Lisa   +5 more
core   +3 more sources

Transformation kinetics of carbide-free bainitic steels during isothermal holding above and below MS

open access: yesJournal of Materials Research and Technology, 2020
The transformation kinetics of a low carbon bainitic steel was investigated using in situ confocal microscopy and dilatometry for isothermal treatments above and below the martensite start (MS) temperature.
Junyu Tian, Dr.   +4 more
doaj   +1 more source

Residual stress, phase, microstructure and mechanical property studies of ultrafine bainitic steel through laser shock peening [PDF]

open access: yes, 2019
The aimed study proposes laser shock peening without a coating of high strength ultrafine bainitic steel to mitigating the fatigue failures for automotive and structural engineering applications.
Prabhakaran , Subramanian   +3 more
core   +1 more source

Effect of Silicon Content on Carbide Precipitation and Low-Temperature Toughness of Pressure Vessel Steels [PDF]

open access: yes, 2017
Cr – Mn – Mo – Ni pressure vessel steels containing 0.54 and 1.55% Si are studied. Metallographic and fractographic analyses of the steels after tempering at 650 and 700°C are performed.
A Gustafson   +27 more
core   +1 more source

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