Results 51 to 60 of about 4,685 (222)
Materials & Design, 2021 The bainitic ferrite plate thickness is the main parameter that controls the strength of this type of microstructures. Such thickness has been proved to mainly depend on the austenite yield strength, the driving force for the transformation and the ...
Adriana Eres-Castellanos +6 more
doaj +1 more source
Tempering of hard mixture of bainitic ferrite and austenite [PDF]
Materials Science and Technology, 2004 5 pages, 6 figures, 2 tables. Recent work has shown that bainitic ferrite plates produced by transformation at low temperatures can be as thin as 20 nm with a hardness in excess of 650 HV30, tensile strength 2.3 GPa and toughness 30 MPa m1/2. Because these properties rely on the fine scale of the microstructure, a study has been carried out ...
García Mateo, Carlos +3 more
openaire +2 more sources
Grain and phase stress criteria for behaviour and cleavage in duplex and bainitic steels [PDF]
, 2006 Stress analyses by X-ray diffraction are performed on a cast duplex (32% ferrite) stainless steel elbow and a bainitic (95% ferrite) pressure vessel steel. During an in situ tensile test, micrographic observations are made (visible glides and microcracks)
Baczmanski A. +12 more
core +5 more sources
In situ observation of bainitic transformation behavior in medium carbon bainitic steel
Journal of Materials Research and Technology, 2022 The bainitic transformation behavior of samples with different scales was observed with dilatometer (DIL), high-temperature laser scanning confocal microscope (LCSM), and environmental transmission electron microscope (ETEM).
Xiaojie Zhao +4 more
doaj +1 more source
Ultra-high–strength Bainitic Steels [PDF]
, 2005 Novel bainitic microstructures, consisting of slender ferrite plates (tens of nm) in a matrix of retained austenite, have reported maximum yield strength of 1.4 GPa, ultimate tensile strength of 2.2 GPa, 30% ductility and respectable levels of fracture ...
Drexler, H. +5 more
core +2 more sources
steel research international, EarlyView.The phase transformation behavior of a hypoeutectoid steel is studied in comparison with alloys containing higher concentrations of tramp elements, simulating high recycling rates. The examination of microstructures reveals that the tramp elements facilitate the formation of displacive phases along with retained austenite.
Lukas Hatzenbichler +7 more
wiley +1 more source
Metals, 2019 In-situ synchrotron diffraction and atom probe tomography (APT) have been used to study the carbon diffusion and redistribution process in austempered ductile iron (ADI) during austempering. The process of carbon content change in bainitic ferrite during
Xiaohu Li +8 more
doaj +1 more source
Metals, 2022 In this paper, a new low-carbon alloy gear steel is designed via Si/Al alloying. The carburizing and austempering, at a temperature slightly higher than the martensitic transformation point (Ms) of the surface and much lower than the Ms of the core, for ...
Yanhui Wang +5 more
doaj +1 more source
Alloy Qualification for Producing Quench and Tempered Plate Steels with Extra‐Heavy Gage
steel research international, EarlyView.This study develops alloy concepts for ultraheavy steel plates (>100 mm) with ≥690 MPa yield strength. Through dilatometry and Jominy testing, the effects of Mo, Ni, and B on hardenability are quantified. A synergy between 0.5% Mo and 0.5%–1.0% Ni ensures core strength at low cooling rates, while boron microalloying suppresses ferrite and promotes ...
Xabier Azpeitia +5 more
wiley +1 more source
Degradation of nanostructured bainitic steel under rolling contact fatigue [PDF]
, 2014 The consequences of rolling contact fatigue on carbide-free nanostructured bainite intended for bearing applications are presented for the first time.
Bhadeshia, HKDH +2 more
core +3 more sources