Results 11 to 20 of about 468 (126)
Semi-probabilistic method for residual lifetime of aluminothermic welded rails with foot cracks [PDF]
Theoretical and Applied Fracture Mechanics, 2016 Abstract One of the most frequent and dangerous failure modes in continuous welded rails is fatigue crack propagation terminated by brittle fracture. Due to the brittleness of the weld material and HAZ and the scatter in its mechanical properties, a statistical approach is necessary.
ROMANO, SIMONE +3 more
openaire +3 more sources
Effect of Bismuth Oxide Particles Size on the Thermal Excitation and Combustion Properties of Thermite Systems. [PDF]
ChemistryOpen, 2021 The particle size of Bi2O3 in thermite systems has an effect on the thermal excitation threshold and combustion performance. The increase of the particle size increases the thermal excitation threshold, reduces the amount of heat release, accelerates the combustion rate, and reduces the duration of combustion.
Li S +6 more
europepmc +2 more sources
Use of Waste From Aluminothermic Welding of Railroad Tracks in Structural Materials Science
Procedia Engineering, 2017 Abstract The article discusses the possibility of using mineral waste from the aluminothermical rail welding in the form of waste refractory forms, and slag in construction materials in the preparation of ceramic, refractory and cement containing materials.
L.L. Maslennikova +2 more
openaire +3 more sources
Common failures in aluminothermic welding process and proposal for their prevention [PDF]
, 2018 Aluminothermic welding of rail is still a unique method for joining the rails because of its flexibility and ease of performance, both during the reconstruction and construction of a new track, as well as in the ongoing maintenance of the continuity of the track.
Manojlović, Vaso +3 more
openaire +4 more sources
A Reliability Study of Phased Array Ultrasonic Inspections Applied to Aluminothermic Welds in Rails [PDF]
, 2017 Nowadays, long welded railway rails are achieved by means of aluminothermic and flush-butt welding processes. Compared to bolted joints, welds proved to be effective in terms of reduced wheel damage, ride comfort and maintenance. However, even if the event is inexplicably not considered in relevant standards, surface cracks often initiate within the ...
M. CARBONI, A. GIANNEO
openaire +3 more sources
The thermomechanical modeling of aluminothermic welds affected by different defects [PDF]
, 2015 This work is devoted to the analysis of the thermo-mechanical behavior of thermite welded rails by numerical simulation. A beam with the profile of an UIC60rail and a weld in the middle, is simulated with the same function of an Hertzian pressure and with the same boundary conditions.
Mouallif, Zakaria +2 more
openaire +3 more sources
Continuous Hot‐Dip Galvanizing of Medium‐Manganese Third‐Generation Advanced High‐Strength Steels
steel research international, Volume 94, Issue 11, November 2023., 2023 Herein, the effects of process atmosphere pO2 on the reactive wetting of two medium‐Mn third‐generation advanced high‐strength steels during continuous hot‐dip galvanizing are interrogated. The substrates are austenitized, flash‐pickled, intercritically annealed, and galvanized in a conventional 0.2 wt% Al (dissolved) bath.
Kazi M. H. Bhadhon +2 more
wiley +1 more source
Enhancement of thermal properties of Al/MoO3 thermite by electrostatic spraying
Engineering Reports, Volume 5, Issue 7, July 2023., 2023 The thermal properties of the thermite prepared by the electrostatic spray method have been greatly improved, and the safety is ensured, laying a foundation for the subsequent scientific research technology and product manufacturing application. Abstract To improve the thermal properties of thermite safely and stably, electrostatic spraying was used to
Jialin Chen +5 more
wiley +1 more source
Progress in the Preparation of Large‐Size High‐Performance CuCr Alloys
Advances in Materials Science and Engineering, Volume 2022, Issue 1, 2022., 2022 CuCr contact material, whose mass fraction of Cr is generally in the range of 25% to 50%, is one of the most desirable contact materials for medium‐ and high‐voltage vacuum switches. The homogeneity and denseness of CuCr alloy are the keys to its application.
Jin-Ru Han +4 more
wiley +1 more source
Extraction of Chromium from Carbon Ferrochromium Residual Wastes [PDF]
, 1995 This work reports the problem of processing residual wastes after producing carbon ferrochrome by recycling dust using a hydrometallurgical method with the purpose of extracting the basic component - chromium.
P P Lazarevskiy +13 more
core +2 more sources