A5058095663- Welding Techniques and Residual Stresses
- Microstructure and Mechanical Properties of Steels
- Advanced Welding Techniques Analysis
- Metal Alloys Wear and Properties
- Metal and Thin Film Mechanics
- Hydrogen embrittlement and corrosion behaviors in metals
- Advanced materials and composites
- Shape Memory Alloy Transformations
- Additive Manufacturing Materials and Processes
- Metallurgical and Alloy Processes
- High Entropy Alloys Studies
- Fatigue and fracture mechanics
- Additive Manufacturing and 3D Printing Technologies
- Non-Destructive Testing Techniques
- Corrosion Behavior and Inhibition
- Advanced ceramic materials synthesis
- Recycling and Waste Management Techniques
- Metallurgical Processes and Thermodynamics
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- Electrodeposition and Electroless Coatings
- Academic Research in Diverse Fields
- Material Properties and Applications
- Concrete Corrosion and Durability
- Titanium Alloys Microstructure and Properties
Universidad de Antioquia
2024-2025
Universidade Federal de Campina Grande
2013-2024
Universidade Federal da Paraíba
2022
Universidad Autónoma del Estado de México
2014
Metallic materials undergo many metallurgical changes when subjected to welding thermal cycles, and these have a considerable influence on the thermo-mechanical properties of welded structures. One method for evaluating cycle variables, while still in project phase, would be simulation using computational methods. This paper presents an evaluation temperature field residual stresses multipass weld API 5L X80 steel, which is extensively used oil gas industry, Finite Element Method (FEM). In...
In this work, we evaluated the influence of welding variables on weld beads applied by submerged arc process (SAW) with conventional current, aiming future application in overlays against corrosion. Segments steel API 5L Gr B pipe as substrate, a 1.13 mm-diameter electrode wire nickel alloy, classification AWS ERNiCrMo-4 (Hastelloy C-276) filler metal, and flux neutral, basic crowded were used. The voltage, feed speed contact tip to work distance (CTWD) analysed, remaining parameters...
In the present work, PTA welding process was used to investigate influence of parameters on dilution, microhardness and corrosion resistance Inconel 625 alloy coatings API 5L X70 grade steel. The electrochemical impedance spectroscopy (EIS) linear potentiodynamic polarization (LPP) measurements were study protection properties deposited layer when immersed in a 3.5% NaCl solution. results EIS LPP have shown that more satisfactory for with higher dilution index. also showed values D (%)varied...
ASTM A 182 F22 steel, used in components subsea for oil extraction, are previously buttered with ductile metal such as Inconel 625, before being welded to steel pipes similar A36 steels. The thermal buttering weld cycle provides the formation of high hardness micro-phases and carbides at interface between Inconel, which when contact hydrogen, originating from cathodic protection applied these equipment, can lead embrittlement this region, causing fragile fractures. In work, 625 submitted...
Residual stresses in a welded joint of ASTM A131 grade AH32 steel was measured either by the X-ray diffraction or displacements referenced points on coordinate measuring machine before and after heat treatment. For all tests, welding performed with Shielded Metal Arc Welding, vertical-up position, certified welder. After welding, some specimens were subjected to marking, made through small holes evenly spaced mapped machine. labeling, samples treatment at temperatures nearby...
O objetivo do trabalho foi avaliar as características da zona termicamente afetada (ZTA) e a microestrutura propriedades mecânicas de metais solda juntas soldadas aço API 5L X80, obtidos para quatro diferentes procedimentos soldagem utilizando processos manuais automatizados. Para isto, chapas referido foram por processo manual ao Arco Elétrico com Eletrodo Revestido (SMAW), 473 673 K como temperaturas interpasses o eletrodo celulósico AWS E8010-G consumível; Arame Tubular (FCAW) robotizado,...
Este trabalho teve como objetivo avaliar as características microestruturais de revestimentos aplicados por soldagem utilizando-se o processo GMAW com duplo arame e metal adição AWS E317L sobre base ASTM A 516 Gr 60. Durante soldagens empregou-se dois níveis energia (1170kJ/m 1530kJ/m), um gás proteção correspondendo a uma mistura argônio oxigênio (95% Ar 5% O2) temperatura interpasse 150ºC. Em seguida, amostras foram caracterizadas ensaios microscopia ótica microdureza. Os resultados...
No Brasil, a soldagem de tubulações tem sido praticamente forma manual, entretanto, utilização processos automatizados têm crescido muito nos últimos anos, contribuindo para o maior controle dos parâmetros soldagem, e conseqüentemente, possibilidade obtenção juntas soldadas com melhores propriedades mecânicas. A aço API 5L X80 ainda vem sendo avaliada no Brasil que diz respeito aos procedimentos, soldagem; aplicação nas condições específicas campo constitui em uma opção incipiente país por...
The objective of the present work was to evaluate welding thin sheets (thickness < 1 mm) similar and dissimilar NiTi alloys with AISI 304 stainless steel using Gas Tungsten Arc Welding (GTAW) process study mechanical metallurgical properties joints without post-welding heat treatment (PWHT). GTAW chosen because it is more economical than usual processes for alloys, such as Laser Beam (LBW). welded were characterized by techniques SEM, OM, electrical resistance in temperature (ERT), tensile...
Concern for the environment has motivated several studies on use of new materials to extend life equipment operating in harsh environments oil sector.One alternative that been used is application coatings with high corrosion resistance welding process materials.The objective this study was evaluate effects different parameters geometric characteristics, dilution, microhardness, microstructure and Inconel 625 alloy deposited API 5L X70 steel pipelines transport plate.The were optimized using...
Resumo O processo de micro soldagem pode ser eficiente para a união Ligas com Memória Forma (LMF) do sistema NiTi devido à alta precisão e localização calor, diminuindo os tamanhos da zona fundida (ZF) termicamente afetada (ZTA), promovendo melhorias nas propriedades mecânicas destes tipos juntas. Nesse contexto, este estudo teve como objetivo determinar as variações das termomecânicas em juntas soldadas fios LMF NiTi. Para o trabalho, uma (ASTM F2063) 0,9 mm diâmetro, foram divididos dois...
Thin films of titanium were deposited onto Al2O3 substrate by hollow cathode discharge method for the formation a ceramic-ceramic joint using indirect brazing method. An advantage this technique is that relatively small amount required metallization ceramic surface when compared with other conventional methods. Rapidly solidified filler Cu49Ag45Ce6 in form ribbons was used. The thickness layer and temperature/time varied. quality brazed evaluated through three point bending flexural tests....
Many are the metallurgical changes suffered by materials when subjected to welding thermal cycle, promoting a considerable influence on welded structures thermo mechanical properties. In project phase, one alternative for evaluating cycle variable, would be employment of computational methods through simulation. So, this paper presents an evaluation temperature field in multipass API 5L X80 steel used oil and gas transportation, using ABAQUS ® software, based Finite Elements Method (FEM)....
Este trabalho teve por objetivo determinar os níveis de tensões residuais decorrentes processos soldagem em juntas soldadas um aço API 5L X80. Inicialmente foram executados procedimentos das utilizando eletrodo revestido - Shielded Metal Arc Welding (SMAW) e tungstênio com proteção gasosa Gas Tungsten (GTAW), variando-se consumíveis utilizados empregando-se uma temperatura interpasse 175ºC, obtendo-se, desta maneira, três soldadas. Foram avaliadas as regiões superiores inferiores juntas,...
Estudo de juntas soldadas à laser chapas finas liga com memória forma NiTi austenítica iNtRoduÇÃo Desde sua descoberta em 1932 para uma AuCd, as ligas (LMF) tem possibilitado a concepção várias aplicações, função das suas propriedades funcionais especiais recuperação grandes deformações pseudo-plásticas, denominadas efeito (EMF) e superelasticidade (SE).Esse desenvolvimento foi impulsionado especial do sistema NiTi, tendo vista principalmente excelente biocompatibilidade resistência corrosão...
Resumo Neste trabalho foi avaliada a influência das variáveis de soldagem em cordões solda, aplicados pelo processo Arco Submerso (SAW) com corrente convencional, visando futura aplicação revestimentos metálicos contra corrosão. Segmentos tubo um aço API 5L Gr B foram utilizados como substrato, além da utilização metal adição liga níquel, diâmetro 1,13mm, classificação AWS ERNiCrMo-4 (Hastelloy C-276), e fluxo do tipo neutro, básico aglomerado (EN 760: SA AF 2 DC). Foram analisadas as...
The continued increase in greenhouse gas emissions has had dire consequences for the global climate. In order to reduce such emissions, several efforts have been made by researchers transport sector, as development of electric motorization, hybrid engines, use biofuels and light alloys. alloys aluminum magnesium vehicles can emission per kilogram drastically, however, it is still necessary develop effective more agile methods dissimilar joints these materials. Some authors studied friction...
The influence of the centerline segregation region (CSR) on hydrogen embrittlement (HE) two different API 5L X80 pipeline steel plates was investigated. novelty this work to establish relationships between CSR, microstructure, and distribution localized fragile particles HE susceptibility fracture morphology. This intended a relationship in high-strength low-alloy steels submitted inhomogeneous transformations. Microscopy, permeation, slow strain rate (SSR) tests were used investigate...