Results 41 to 50 of about 1,434 (185)

Studies and Researches on Heating Microstructures of Some Steels

Scientific Bulletin of Valahia University: Materials and Mechanics, 2022
An important category of widely used steels is chromium alloy improvement steels (STAS 9382/4-89) intended for the execution of shafts, axles, cams, sprockets and sprockets subjected to operation at important demands.
Stoian Elena Valentina, Bratu Vasile, Bratu Ruxandra Elena, Petre Ivona Camelia, Enescu Maria Cristiana, Rusanescu Carmen Otilia   +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, Unai Mayo, Nerea Isasti, Eric Detemple, Hardy Mohrbacher, Pello Uranga   +5 more
wiley   +1 more source

Exploiting Residual Elements Arising from Scrap Steel in Future Sustainable Steel Alloy Design

steel research international, EarlyView.
Herein, the effects of residual elements Cu and Sn on grain growth, recrystallization, and phase transformation in C–Mn steel are summarized, and a case study is presented on how the presence of residual elements can be exploited to reduce deliberate Nb microalloying while achieving the same grain size control and strength during thermomechanical ...
Claire Davis, Carl Slater, Yulin Ju, Jiaqi Duan, Pedram Dastur, Martin Strangwood   +5 more
wiley   +1 more source

Tribological behavior of Fe3C–CNT bilayers grown by plasma-induced metal dusting: Insights into the effect of nanotubes catalyst particles on friction and wear

Friction
This work investigates the tribological behavior of bilayer surfaces formed by vertically aligned carbon nanotube (VACNT) films grown on top of cementite (Fe3C) layers.
Thiago De Souza Lamim, Tainá Pigosso, Tainan Daniel Andrioni, Diego Martínez-Martínez, José Daniel Biasoli de Mello, Cristiano Simões Abreu, Aloisio Nelmo Klein, Tatiana Bendo, Cristiano Binder   +8 more
doaj   +1 more source

Phase Transformation Behavior of Continuously Cooled Fe–C–V–(Mo) Alloys

steel research international, EarlyView.
Additions of vanadium and molybdenum microalloying are shown to reshape phase transformations in clean low‐carbon steels. By tracking microstructural shifts during continuous cooling, the work uncovers the correlation between transformation kinetics, ferrite morphology, and hardness.
Anastasiya Tselikova, Jannik Zuraszek, Ulrich Krupp, Rolf Schmidt, Hardy Mohrbacher, Alexander Gramlich   +5 more
wiley   +1 more source

Fabrication of Fe/C Composites as Effective Electromagnetic Wave Absorber by Carbonization of Pre-magnetized Natural Wood Fibers

Journal of Bioresources and Bioproducts, 2019
With the increasing usage of varied electronic devices, the induced electromagnetic interference (EMI) irradiation pollution has become a novel environmental pollution besides of water and air pollutions, drawing a great of interests from the scientists ...
Zhichao Lou, Weikai Wang, Chenglong Yuan, Yao Zhang, Yanjun Li, Lintian Yang   +5 more
doaj   +1 more source

Investigation of the Reoxidation and Material Behavior of Directly Reduced Pellets and Fines Under Simulated Rail Transport Conditions

steel research international, EarlyView.
The study investigates the reoxidation behavior of DRI pellets (Midrex and H2‐reduced) under realistic conditions, considering the test parameters of temperature, humidity, storage duration, particle size (including fine fraction), and container geometry. The samples are analyzed based on mass changes.
Bernd Taferner, Johannes Schenk, Richard Schanner, Peter Gluschitz, Jan Eisbacher‐Lubensky   +4 more
wiley   +1 more source

Structure and phase composition of high-speed steels

Қарағанды университетінің хабаршысы. Физика сериясы, 2020
This work is devoted to the study of the structure and phase composition of high-speed steels R6M5, R9 and R18. High service properties of high-speed steel tools are achieved by heat treatment.
Б.К. Рахадилов, В. Виелеба, М.К. Кылышканов, А.Б. Кенесбеков, М. Маулет   +4 more
doaj   +1 more source

Effect of Double Annealing on the Microstructure and Mechanical Properties of a Medium Manganese Steel

steel research international, EarlyView.
A double intercritical annealing strategy is proposed to tailor the multiphase microstructure and mechanical response of a medium‐Mn steel. The treatment produces an ultrafine mixture of ferrite, martensite and multiple austenite populations with graded thermal and mechanical stability, formed through austenite reversion and controlled retransformation.
Mattia Franceschi, Jose A. Jimenez, Carlos Garcia‐Mateo, Radhakanta Rana   +3 more
wiley   +1 more source

DENDRITIC CRYSTALLIZATION OF CAST IRON

Литьë и металлургия, 2015
It is shown that crystallization of the main phases in cast iron happens on the dendritic mechanism. The main phases when hardening cast iron are dendrites of austenite, graphite and a cementite.
V. Stetsenko
doaj   +1 more source