Api Steels
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. MONITORAMENTO DA COMPOSIÇÃO EM ÉSTERES DO BIODIESEL DO ÓLEO DE AMÊNDOA DA MACAÚBA (Acrocomia aculeata (Jacq.) Lodd. ex Mart.) EM CONTATO DIRETO COM O AÇO CARBONO E O AÇO CARBONO GALVANIZADO
The oil from the macaúba (Acrocomia aculeata) fruit, a native palm in Brazil, has a real potential for the industrial production of biodiesel. This report describes an experimental work devoted to monitor the chemical behavior of the fatty acid methyl esters from oil of the macaúba fruit kernel and the leaching of metal elements into the biodiesel put in c
Quím. Nova. Publicado em: 27/05/2019
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2. A Comparative Investigation of the Corrosion Resistance and HIC Suceptibility of API 5L X65 and API 5L X80 Steels
High strength low alloy (HSLA) steels are used for the construction of pipelines for oil and natural gas transportation. For such applications pipelines must exhibit mechanical resistance and resistance to corrosion and hydrogen induced cracking (HIC). API 5L X65 steels are the main materials used for this purpose. However, for economic reasons, the use of s
Mat. Res.. Publicado em: 07/01/2019
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3. Influence of Niobium and Molybdenum on Mechanical Strength and Wear Resistance of Microalloyed Steels
The HSLA (High-Strength Low Alloy) steels are used in the production of pipes, flanges and connectors to build ducts for ore, oil and gas transport. The conventional processes are the rolling or forging. In the transport of ore and heavy oil, the abrasive particles impair the surfaces and reduce the pipelines lifetime. Therefore, besides the mechanical prope
Mat. Res.. Publicado em: 05/06/2017
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4. Evaluation of hydrogen-Induced cracking resistance of the In625 laser coating system on a C-Mn steel substrate
Abstract The corrosion of C-Mn steels in the presence of hydrogen sulfide (H2S) represents a significant challenge to oil production and natural gas treatment facilities. The failure mechanism induced by hydrogen-induced cracking (HIC) in a Inconel 625 coating / C-Mn steel has not been extensively investigated in the past. In the present work, an API 5CT ste
REM, Int. Eng. J.. Publicado em: 2017-06
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5. Discerning the Fatigue Crack Growth Behavior of API X65 Steels Under Sequence Loading
Abstract This paper presents the effect of sequence loading on fatigue crack growth of API X65 steel tested in room temperature. Most of pipeline steels are subjected to wide spectrum of loading during the length of service. Influence of load history effect can cause a trickier assessment to the fatigue behaviour. The objective of this study is to determine
Lat. Am. j. solids struct.. Publicado em: 2017-02
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6. Comportamiento a la Corrosión del Acero API X70 Soldado por el Proceso de Doble Arco Sumergido Inmerso en Diferentes Medios Corrosivos
Abstract The steels API X70 are applied in construction and fabrication of pipeline for transport of hydrocarbons, however, to lapse time are degrade due to environment to which are exposed, influencing on mode and corrosion rate on surface base metal (BM), heat zone affected (HAZ) and fusion zone (FZ). In order to know and evaluate the corrosion susceptibi
Soldag. insp.. Publicado em: 2016-06
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7. Estudo do comportamento termomecânico do aço API 5L X80 microligado ao Nb-Ti através de ensaios de torção a quente
AbstractThe controlled rolling of high strength low alloy steel has been widely used in the production of large diameter pipes for the oil and gas industry. The thermo-mechanical control process (TMCP) is used to maximize grain refinement and achieve both higher strength and toughness in the steels. In this sense, API 5L X80 micro-alloyed Nb-Ti steel was sub
Rem: Rev. Esc. Minas. Publicado em: 2015-06
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8. Microstructure and mechanical properties of two Api steels for iron ore pipelines
This research compares the mechanical behavior of two API steels (X60 and X70) used in the longest pipeline in the world for the conveyance of iron ore. Tensile tests, Charpy impact tests, CTOD tests and fatigue crack growth tests are performed at ambient temperature. Metallographic examination showed a banded microstructure consisting of polygonal ferrite a
Mat. Res.. Publicado em: 27/05/2014
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9. Análise crítica do ensaio de determinação da curva mestre (ASTM E 1921) aplicado a um aço da classe API 5L X80. / Critique analyse of essay of determination of master curve (ASTM E 1921) applied the an API 5L X80 steel.
One of the key aspects of structural integrity is the consideration of scale effects characteristic of materials wich present quase-brittle behavior. The Master curve method, designed for ferritic steels operating at temperatures in the materials corresponding to the ductile-brittle transition. This method combine charpy impact testing and a few fracture tou
Publicado em: 2011
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10. Estudo sobre o pick-up de nitrogênio após a etapa de refino primário do aço
With the growing need of high quality steel there is a great demand for the development and production of steels with ever stringent chemical composition restrictions. For instance the presence of carbon and nitrogen in Interstitial Free steels for automobile industry. These restrictions are defined by the final application to which the product is destined.
Publicado em: 2010
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11. Environmentally induced cracking of API grade steel in near-neutral pH soil
Environmentally induced cracking of pipeline steels in contact with soil have been investigated. Different soils were prepared in order to determine their physical, chemical and bacteriological characteristics. Slow strain rate testing was carried out by using electrolytes obtained from soil samples and NS4 standard solution. Stress vs. strain curves of API
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-06
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12. Efecto del procedimiento de soldadura sobre las propiedades de uniones soldadas de aceros microaleados para cañería
The objective of this work was, in this first step, to compare mechanical property and microstructure of the steel HIC, alloyed with Nb-Ti-Cu-Ni, corrosion resistant, to those of a normal steel NOR, microlloyed with Nb-V-Ti, characterized through chemical analysis, hardness measurements, metallographic studies and tensile and Charpy-V properties. The preheat
Soldagem & Inspeção. Publicado em: 2009-03