Surface Rolling
Mostrando 1-12 de 81 artigos, teses e dissertações.
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1. Effect of Multi-Pass Rolling on the Performance of AZ31 Magnesium Alloy Anode in Mg-Air Battery
In this work, the influence of rolling passes on microstructure, corrosion behavior, electrochemical performance, and battery performance of AZ31 magnesium alloy was studied. The experimental results show that the grain size decreases first and then increases with rolling passes. Among them, the grain size of three passes rolled sample is the smallest, while
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Effect of Rolling Reduction and Temperature on the Oxide Scale of Hot Rolled Mild Steel Strip
Hot rolling experiments were designed to investigate the effect of rolling temperature and rolling deformation on microstructure, thickness and surface red scale of hot rolled mild steel oxide scale by spectrometer, SEM and pickling experiment. The research results show that in the same other experiment conditions, the greater the rolling deformation, the th
Mat. Res.. Publicado em: 04/11/2019
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3. Operational and energy performance of the tractor-scarifier assembly: Tires, ballasting and soil cover
RESUMO A altura das garras do pneu, o lastro do trator e a cobertura do solo podem influenciar o desempenho operacional e energético do conjunto trator-escarificador. O objetivo deste estudo foi analisar o desempenho operacional e energético do conjunto trator-escarificador, em função da altura das garras do pneu, do lastro e da superfície de rolamento.
Rev. bras. eng. agríc. ambient.. Publicado em: 09/09/2019
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4. Corrosion and Micro-abrasive Wear Behaviour of 2524-T3 Aluminium Alloy with PAni-NPs/PSS LbL Coating
In this paper, we present an alternative method to obtain thin films for coating protection on the surface of the AA2524-T3 Al-alloy by using the Layer-by-Layer (LbL) technique. The LbL films were fabricated by alternated immersion of the Al-alloy into a poly(styrene sulfonate) (PSS) and polyaniline nanoparticles (PAni-NPs) solutions, obtaining a PAni-NPs/PS
Mat. Res.. Publicado em: 06/06/2019
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5. ESTABLISHMENT OF QUALITY CLASSES FOR HARDWOOD FLOORINGS BY SIMULATED USE
ABSTRACT Many wood species have been employed as floorings, however their performance can vary greatly according to the wood properties and the type of application. Mechanical tests can be performed for simulating the wood floorings in service, but there are no standards for sorting the materials according to their quality as flooring. In this study, the tes
CERNE. Publicado em: 20/05/2019
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6. Ruido magnético Barkhausen para el estudio de la anisotropía magnética en aceros inoxidables
ABSTRACT The magnetic Barkhausen noise (MBN) is a phenomenon that occurs in ferromagnetic materials when they are exposed to slowly varying magnetic fields, generating discrete jumps in their magnetization. These jumps are produced by the movement of the magnetic domain walls. They can be detected by a small coil allocated on the sample surface. The movement
Matéria (Rio J.). Publicado em: 19/07/2018
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7. Fatiga de contacto por rodadura en acero SAE 1050 recubierto con TiN, posteriormente templado
ABSTRACT The use of ceramic coatings of the nitride, carbide, or diamond type on steel substrates promotes the improvement of tribology properties. Nevertheless, high hardness gradients and adhesion problems may deteriorate the performance of these coatings when subjected to Rolling Contact Fatigue (RCF). Some studies on steels with ceramic coatings were car
Matéria (Rio J.). Publicado em: 19/07/2018
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8. Microstructure and Mechanical Properties of Borided Inconel 625 Superalloy
ABSTRACT The Ni- based superalloy Inconel 625 is extensively used owing to its high strength, excellent fabricability, good weldability and outstanding resistance to high temperature corrosion against aggressive environments. However, despite its unique properties and extensive use, its wear resistance is in some cases unsatisfactory. In this study, Inconel
Matéria (Rio J.). Publicado em: 22/06/2017
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9. Damage evolution in a tensile specimen of a ductile stainless steel
Abstract This paper presents a study about the fracture mechanism of a ferritic stainless steel (UNS S44400 type) during a tensile test. The applied materials for the experimental procedures were 25 specimens of the steel, machined in the rolling direction. Each specimen was submitted to standard polishing procedures. One of the samples, in the original stat
Rem: Rev. Esc. Minas. Publicado em: 2016-06
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10. Graphite and Nickel Containing Tin Bronze-Steel Bimetals as Lead Free Bearing Materials
Ni was added into graphite-lead free tin bronze composite layers on surface of steel sheets by primary sintering mixed powders of graphite and CuSn10 with addition of a nickel nitrate and poly(vinyl alcohol) (PVA) solution in an ammonia decomposition atmosphere. The reduced Ni particles attached on the surface of graphite and CuSn10 particles help to link th
Mat. Res.. Publicado em: 20/05/2016
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11. Caracterización de semielaborados de aleaciones de titanio procesadas por extrusión y laminación perforación (proceso Mannesmann)
ABSTRACTFor the manufacture of seamless pipes and tubes are used, as raw materials, hollow bars from hot deformation processes like extrusion and rotary tube piercing (Mannesmann process). Starting from these semi-elaborated products and by means of successive cross sections reductions through tube drawing or tube rolling (cold pilgering) the requested final
Matéria (Rio J.). Publicado em: 2015-09
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12. Evolution of texture and microstructure during thermo-mechanical processingin ultrathin low carbon steels
ABSTRACT In this research paper an analysis concerning the evolution of crystallographic texture during hot rolling processing of low carbon steel is presented. The study was performed on a steel sheet with an initial thickness of 1.9 mm used in the process of cold rolling. In order to assess the differences between tensile and compressive deformation, a 90�
Matéria (Rio J.). Publicado em: 2015-09