Hsla Steel
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Fatigue failure analysis of HSLA steel sheets holed by conventional and flow drilling processes
RESUMO O processo de furação por escoamento produz buchas para uniões removíveis que podem ser roscadas pelo processo de rosqueamento por conformação, reduzindo etapas da produção de componentes da indústria automobilística e em galpões da construção civil. Aços de alta resistência e baixa liga (ARBL) são empregados em variadas aplicações n
Matéria (Rio J.). Publicado em: 16/09/2019
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2. Fatigue failure analysis of HSLA steel sheets holed by conventional and flow drilling processes
ABSTRACT Flow drilling process produces bushes for removable joints that can be threaded by forming tapping process, reducing stages in production of components of automobile industry and in construction sheds. High strength and low alloy steels (HSLA) are employed on several applications in the processing industry. Benefits provided by these materials make
Matéria (Rio J.). Publicado em: 10/06/2019
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3. 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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4. Optimización de los Parámetros de Soldadura por Arco Sumergido en Acero HSLA: una Aplicación para Manufactura de Tuberías de Conducción de Hidrocarburos
Abstract The HSLA steel API 5L X70 is used to manufacture pipes for transporting hydrocarbons. The construction of pipe of this material involves high amount of welding, where the parameters used affect directly in the metallurgical structure and in the mechanical properties thereof when welded. Thus, to study the impact of the parameters of the submerged ar
Soldag. insp.. Publicado em: 2015-12
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5. Second phase precipitation in ultrafine-grained ferrite steel
Grain size refinement is one of the most efficient strengthening mechanisms applied to modern High-Strength Low-Alloy steels (HSLA) because yield strength and toughness are both improved. This paper discusses the distribution of carbides by using transmission electron microscopy (TEM) in a low-carbon steel with ultrafine grained (UFG) ferrite. Fine cementite
Mat. Res.. Publicado em: 06/12/2013
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6. Effects of thermomechanical treatment on the occurrence of coincident site lattice boundaries in high strength low alloy steel
Many studies propose thermomechanical routes to improve HSLA (high strength low alloy) steels by microstructural modification but ignore the study of occurrence of CSL boundaries. The occurrence of these special boundaries is influenced by thermomechanical treatment in which the modification of misorientation profile is related with the increase of Σ3 and �
Mat. Res.. Publicado em: 13/08/2013
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7. Application of ANFIS for modeling of microhardness of high strength low alloy (HSLA) steels in continuous cooling
The paper presents some results of the research connected with the development of new approach based on the Adaptive Network-based Fuzzy Inference Systems (ANFIS) of predicting the Vickers microhardness of the phase constituents occurring in five steel samples after continuous cooling. The independent variables in the model are chemical compositions, initial
Mat. Res.. Publicado em: 05/04/2013
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8. Electrochemical corrosion behavior of X52 and X60 steels in carbon dioxide containing saltwater solution
X52 and X60 high strength low alloy (HSLA) steels are widely used in the construction of petroleum pipelines. This paper discusses the corrosion resistance of X52 and X60 steels in CO2 containing saltwater at pH 4.4 and 50 ºC. A circulating flow loop system inside an autoclave was used for conducting the experimental work. The rotating impeller speed was 20
Mat. Res.. Publicado em: 04/12/2012
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9. Estudo da soldabilidade do tubo API 5L X80 utilizando os processos de soldagem: MAG com transferência controlada e eletrodo tubular. / Study of the weldability of API 5L X80 pipe using the gmaw-stt and fcaw welding process.
Os tubos API 5L X80, construídos com aços alta resistência e baixa liga, são especificados para a construção de dutos para transporte de petróleo e derivados sob alta pressão, com conseqüente redução no peso dos tubos. O processo mais empregado para a soldagem circunferencial de tubos em campo no Brasil é o processo com eletrodo revestido, tanto
Publicado em: 2010
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10. WELDABILITY ANALISES OF API 5L X-80 STEEL USING TEKKEN TEST AND IMPLANT TEST / ANÁLISE DA SOLDABILIDADE DO AÇO API 5L X-80 POR MEIO DOS TESTES TEKKEN E DE IMPLANTE
This work shows a study of the weldability of API 5L X-80 steel using the Tekken Test and the Implant Test. The research analises the weldability of HSLA X-80 steel for orbital circunferencial welding with the Shielded Metal Arc Weld and the Flux Core Arc Weld processes with regard to hydrogen induced cracking formation. The aim is to make feasible different
Publicado em: 2008
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11. Estudo das transformaÃÃes de fase em Pseudo â ZTAs para aÃo API 5L X-70 visando desenvolvimento de dispositivo substrato
The microstructure transformation of structural steel has been studied from continuous cooling in metallic means to simulate the microestrutural transformations in different places in a HAZ (Heat Affected Zone). The studied material is Steel API 5L X70, largely used in piping in the Petrochemical Industries for its hight mechanical resistance and low weight,
Publicado em: 2008
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12. Propriedades mecânicas e microestruturais de aços de alta resistência e baixa liga soldados
Na presente dissertação foram investigadas as propriedades mecânicas e microestruturais, antes e após o processo de soldagem, dos aços ZSTE380 e DOGAL800, que são aços de alta resistência e baixa liga (ARBL), além do aço convencional ZAR230. O principal objetivo do trabalho foi avaliar possíveis modificações nessas propriedades e verificar a pos
Publicado em: 2008