Results 71 to 80 of about 10,505 (224)

Fe-C and Fe-H systems at pressures of the Earth's inner core

, 2012
The solid inner core of the Earth is predominantly composed of iron alloyed with several percent Ni and some lighter elements, Si, S, O, H, and C being the prime candidates.
Bazhanova, Zulfiya G., Gianola, Omar, Oganov, Artem R.   +2 more
core   +1 more source

A comprehensive study on the microstructure and mechanical properties of arc girth welded joints of spiral welded high strength API X70 steel pipe [PDF]

, 2020
In the paper, the effect of welding technology on the microstructure and mechanical properties of girth welded joints was presented. Metallographic examinations based on light microscopy and SEM were conducted on girth welded joints of API X70 steel pipe.
De Waele, Wim, Dymek, S., Hertelé, Stijn, Kopyściański, M., Niagaj, J., Rykała, J., Węglowski, M. St.   +6 more
core   +1 more source

In Situ Investigation of Microstructure Evolution and Stress Generation During Low‐Pressure Carburizing and Quenching by Means of Synchrotron X‐Ray Diffraction

steel research international, EarlyView.
This study uses in situ synchrotron X‐ray diffraction at the German Electron Synchrotron to analyze low‐pressure carburizing (LPC) in steels. The findings reveal surface carbon saturation and carbide formation kinetics, and phase‐specific stress development during quenching. The results show carbide kinetics depend on steel grade and size, while stress
Ogün Baris Tapar, Michael Georg Zürn, Jens Gibmeier, Antonio Carlos de Figueiredo Silveira, Matthias Steinbacher, Norbert Schell, Jérémy Epp   +6 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

Inclusion agglomeration in electrified molten metal: thermodynamic consideration [PDF]

, 2016
The effect of electric current on inclusion agglomeration in molten metal has been investigated. It is found that the agglomeration is dependent on the electric current density, distance between inclusions and orientation of electric field.
Qin R. S., R. S. Qin, Troitskii O. A., Z. C. Zhao   +3 more
core   +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

Thermal expansion and crystal structure of cementite, Fe3C, between 4 and 600K determined by time-of-flight neutron powder diffraction [PDF]

, 2004
The cementite phase of Fe3C has been studied by high-resolution neutron powder diffraction at 4.2 K and at 20 K intervals between 20 and 600 K. The crystal structure remains orthorhombic (Pnma) throughout, with the fractional coordinates of all atoms ...
Brodholt, J., Dobson, D.P., Knight, K.S., Marshall, W.G., Price, G.D., Vocadlo, L., Wood, I.G.   +6 more
core  

Electric-field-induced alignment of electrically neutral disk-like particles: modelling and calculation [PDF]

, 2017
This work reveals a torque from electric field to electrically neutral flakes that are suspended in a higher electrical conductive matrix. The torque tends to rotate the particles toward an orientation with its long axis parallel to the electric current ...
A Kolin, A Rahnama, A Rahnama, AI Oliva-Aviles, B Comiskey, BW Smith, C Cunha, D Leenov, E Mobini, E Ringe, ET Thostenson, F Bonaccorso, F Lin, GL Hu, H Ferrand, HA Pohl, JP DeRocher, JY Chen, P Zhang, R Haggenmueller, R Pethig, RS Qin, RS Qin, S Sacanna, SM Thompson, T Kimura, TZ Kosc, TZ Shen, U Bohnenkamp, WW Tie, XF Zhang, XF Zhang, XJ Hao, YJ Lo, Z Fan, ZJ Hu   +35 more
core   +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

The effect of network cementite dissolution on the nucleation and growth of prior austenite grains in high carbon low alloy steels

Journal of Materials Research and Technology
The state of austenite grains has an essential role in the microstructure transformation and mechanical properties of alloy steel during heat treatment or subsequent hot working.
Dezhi Li, Xianming Zhao, Hongliang Zhang, Jie Li, Huaibin Han   +4 more
doaj   +1 more source