Results 131 to 140 of about 877,846 (152)
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The effect of bainite in producing nano/ultrafine grained steel by the martensite treatment
Materials Science and Engineering: A, 2011Abstract The martensite treatment including cold rolling and subsequent annealing of microstructures with high percentage of martensite is one of the most effective thermo-mechanical methods for grain refinement in steels. In the present work, the effect of bainite phase on the formation of nano/ultrafine grained structure in a low alloy 0.2% C steel
Hossein Zakerinia +2 more
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Continuously Cooled Ultrafine Bainitic Steel with Excellent Strength–Elongation Combination
Metallurgical and Materials Transactions A, 2014Serious efforts have been made to simultaneously improve the strength and ductility of steels for different applications. However, steel with the ultimate tensile strength (UTS) above 1200 MPa with minimum elongation of 20 pct is still difficult to produce.
Sourav Das, Arunansu Haldar
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International Journal of Fatigue, 2020
Abstract We have studied here the high cycle fatigue properties and sub-surface fatigue crack initiation mechanism in advanced bainitic steel subjected to conventional bainitic austempering (BAT) and novel “disturbed” bainitic austempering (DBAT) processes.
Guhui Gao, Bingzhe Bai, Xiaolu Gui
exaly +2 more sources
Abstract We have studied here the high cycle fatigue properties and sub-surface fatigue crack initiation mechanism in advanced bainitic steel subjected to conventional bainitic austempering (BAT) and novel “disturbed” bainitic austempering (DBAT) processes.
Guhui Gao, Bingzhe Bai, Xiaolu Gui
exaly +2 more sources
Improved Properties of Mn Series Ultralow Carbon Steel With Ultrafine Bainitic Structure
Materials Science and Technology, 2012In order to reduce the cost of alloying elements, Mn series ultralow carbon bainitic (ULCB) steels have been developed. The different cooling conditions have been used to improve the mechanical properties of Mn series ULCB steels in the present study.
G H Gao, H Zhang, B Z Bai
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Improving Fatigue Resistance of Ultrafine Bainitic Steel by Exploiting Segregation-Induced Bands
International Journal of FatigueAn ultrafine bainitic steel was designed with segregation-induced martensitic/austenitic (MA) bands. The steel comprises almost 21 retained austenite (RA); the rest is mainly bainitic ferrite and a small fraction of martensite. The steel exhibits room temperature (RT) yield strength of â ¼914 MPa, ultimate tensile strength of â ¼1969 MPa, and total ...
Sumit Ghosh +2 more
exaly +3 more sources
Materials Science and Technology
The effects of rapid tempering on the microstructure and mechanical properties of 0.34C ultrafine bainitic steel were studied. Results indicate that the carbon atoms in bainitic ferrite gradually segregated to dislocations when tempered at 450°C.
Zhinan Yang, Fucheng Zhang
exaly +2 more sources
The effects of rapid tempering on the microstructure and mechanical properties of 0.34C ultrafine bainitic steel were studied. Results indicate that the carbon atoms in bainitic ferrite gradually segregated to dislocations when tempered at 450°C.
Zhinan Yang, Fucheng Zhang
exaly +2 more sources
Scripta Materialia, 2009
We explore microstructural refinement through complete/partial recrystallization of prior cold-deformed ferrite during austenitizing or austempering of SAE 52100 steel to obtain ultrafine bainite and martensite. Optical and scanning/transmission electron microscopy coupled with compositional microanalysis were employed to determine the volume fraction ...
J. Chakraborty +2 more
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We explore microstructural refinement through complete/partial recrystallization of prior cold-deformed ferrite during austenitizing or austempering of SAE 52100 steel to obtain ultrafine bainite and martensite. Optical and scanning/transmission electron microscopy coupled with compositional microanalysis were employed to determine the volume fraction ...
J. Chakraborty +2 more
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International Journal of Materials Research, 2019
AbstractThe cold rolling and subsequent annealing of microstructures with a high percentage of bainite is one of the promising thermomechanical treatments for grain refinement in low-alloy steels. In this research, the bainite microstructure was formed in the steel DIN 1.5715 by austenitizing at 1143 K followed by quenching in a salt-bath at 688 K. The
Reza Gostariani +2 more
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AbstractThe cold rolling and subsequent annealing of microstructures with a high percentage of bainite is one of the promising thermomechanical treatments for grain refinement in low-alloy steels. In this research, the bainite microstructure was formed in the steel DIN 1.5715 by austenitizing at 1143 K followed by quenching in a salt-bath at 688 K. The
Reza Gostariani +2 more
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Materials Science and Engineering: A, 2010
Abstract An ultra-low carbon niobium-microalloyed steel with yield strength of ∼900 MPa has been processed on a pilot-plant scale. The microstructure of the steel is primarily characterized by lower bainite and acicular ferrite, with small fraction of lath-martensite and martensite–austenite (MA) constituents. Bainite is present as fine domains.
Aimin Guo +4 more
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Abstract An ultra-low carbon niobium-microalloyed steel with yield strength of ∼900 MPa has been processed on a pilot-plant scale. The microstructure of the steel is primarily characterized by lower bainite and acicular ferrite, with small fraction of lath-martensite and martensite–austenite (MA) constituents. Bainite is present as fine domains.
Aimin Guo +4 more
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2020
FEMS - (Federation of European Materials Societies)
Eres-Castellanos, Adriana +8 more
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FEMS - (Federation of European Materials Societies)
Eres-Castellanos, Adriana +8 more
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