Thermodynamic analysis and strength-toughness research of nanobainite [PDF]
, 2016 In view of slow phase transformation rate in high-carbon,silicon-rich and low-alloy bainite steel(nanostructured bainite steel),the effects of alloy elements on the overall kinetics of low temperature bainite phase transformation were analyzed by using ...
ZHAO Fu-qing +4 more
core +1 more source
Reverse Hall–Petch Effect of Nano-Bainite in a High-Carbon Silicon-Containing Steel
MetalsHigh-strength steels are widely used in various mechanical production and construction industries for their low cost, high strength and high toughness. Among these, bainitic steels have better comprehensive performance relative to martensite and ferrite.
Xin Zhang +5 more
doaj +1 more source
Low-Alloyed Spring Steel: Nanostructure and Strength After Austempering
MetalsCarbide-free bainite microstructures were developed in 0.6 wt.%–2 wt.% Si spring steel via austempering at 250 °C. Heat treatment included austenization with subsequent isothermal holding at 250 °C, varying the holding duration to 1.0, 1.5, or 2.0 h with
Mikhailo Brykov +7 more
doaj +1 more source
Development of Nanobainitic Microstructures in Carbo-Austempered Cast Steels: Heat Treatment, Microstructure and Properties [PDF]
Metals, 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 treatment.
Oscar Ríos-Diez +4 more
openaire +3 more sources
Kinetics and microstructural evolutions during the tempering of martensitic and nano-bainitic low alloyed steel : in situ experimental study and modelling [PDF]
, 2021 Nano-bainitic steels represent a new class of alloys, whose microstructure consists of nanostructured bainitic ferrite formed at low temperature with a high amount of retained austeniteleading to a high ductility and high tensile strength of the steel ...
Gaudez, steve
core
Effect of prior martensite on the thermal stability of nanobainitic steels
Materials Research Express, 2019 Two types of the nanobainitic microstructures which consist of plate-like bainitic ferrite, retained austenite with and without martensite were obtained by quenching to Ms-12 °C and ausforming by about 30% before isothermal bainitic transformation at 300 °C.
Yu Xinpan, Wu Huibin, Feng Fanfan
openaire +1 more source
Journal of Alloys and Metallurgical SystemsIn this study, during an ausforming treatment, the specimens were austenitized at 1100°C and then exposed to rolling process at temperature of 300 °C by different degrees of deformation; 5, 10 and 15 %, and finally were undergone an austempering ...
Mehrbod Modarresi, Roohollah Rahmanifard
doaj +1 more source
Role of nano-bainite laths and nanosized precipitates: Strengthening a low-alloy steel to 1870 MPa
Journal of Materials Research and TechnologyStrength and ductility trade-off is a dilemma in the field of metallic materials. In this study, the ultrafine-grained low-alloy steel was prepared using hot rolling, warm rolling, and bainitic treatment processing.
W.Y. Niu +5 more
doaj +1 more source
CrystalsThe exploitation of advanced high-strength steels in cold climates requires a deep understanding of their structural stability and mechanical reliability.
Vasily Efremenko +8 more
doaj +1 more source
Machinability and phase transformation study of nanobainite steels [PDF]
, 2013 There is an increasing demand for high strength materials with the development of technology and critical applications. Nano materials are newly developed materials with extremely high strength for this purpose.
Guy Littlefair (13071435) +2 more
core