Results 151 to 160 of about 1,231 (190)
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Hydrogen Induced Cracking HIC Resistance in HSLA API 5L X65 e 5L X80 Steels
OTC Brasil, 2017Abstract In the oil and natural gas production chain the structures for transport and extraction of the product are damaged by the conditions they are exposed to, which generally contain H2S, reducing the properties and the good performance of these pipes.
J. Quispe Aviles +2 more
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Sklonost čelika API 5L X80 prema hladnim pukotinama
Zavarivanje, 2012U radu je dan prikaz istraživanja čelika API 5L X80 na osjetljivost prema pojavi hladnih pukotina uzrokovanih vodikom. Kod visokočvrstih čelika, hladne pukotine se pojavljuju u metalu zavara i zoni utjecaja topline. Mehanizam djelovanja vodika je predmet mnogih istraživanja, i još uvijek nije utvrđen univerzalni model degradacije materijala uzrokovanih
Tomić, Tanja +2 more
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Cooling rate effects in the welding of API 5L-X80 steel
Welding International, 2016AbstractOne of the main reasons for the development of API 5L-X80 steel was its use in polar regions, where high toughness at low temperatures is required. This work studied the effect of the cooling rate in welding on the mechanical and metallurgical properties of this type of steel.
Roberto Gomes Moojen +3 more
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Induction Hot Bending and Heat Treatment of 20” API 5L X80 Pipe
Volume 3: Materials and Joining; Pipeline Automation and Measurement; Risk and Reliability, Parts A and B, 2006The present work discusses the effect of the induction hot bending process on the microstructure and the mechanical properties of an API 5L X80, 20” pipe produced by the UOE process. The key characteristic of the pipe was the manufacturing process of the steel plate, involving thermomechanical controlled rolling without accelerated cooling.
Gilmar Zacca Batista +3 more
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Corrosion by Sulfate Reducing Bacteria in Welded Joints of Stell API 5L X80
Materials Science Forum, 2016Articles report that the sulphate reducing bacteria (SRB) are the main micro-organisms related to cases of corrosion. They reduce the sulfate ion resulting in the production of sulfide, disulfide and hydrogen sulfide, potential agents of corrosion of ferrous materials.
E.S.L. Vasconcelos +5 more
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Microstructural Evaluation of API 5L X80 Pipeline Steels Submitted to Different Cooling Rates
Materials Science Forum, 2010During the life cycle of an API steel there are occasions when it will be submitted to thermal cycle. For tubes produced by the UOE process, for the oil and gas industry, severe thermal cycles occur during the welding procedure and when the tube requires hot induction bending.
Ivani de Souza Bott +3 more
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Microstructural Evolution of HSLA ISO 3183 X80M (API 5L X80) Friction Stir Welded Joints
Metals and Materials International, 2018Evaluation was made of friction stir welded joints, identifying conditions that resulted in satisfactory welded joints free from defects and with microstructural characteristics that provided good mechanical properties. Microstructural characterization and cooling curve analysis of the joints with lower and higher heat inputs evidenced deformation ...
Tahiana F. C. Hermenegildo +4 more
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Characterization of Mechanical Properties and Residual Stress in API 5L X80 Steel Welded Joints
Journal of Materials Engineering and Performance, 2017The use of high-strength and low-alloy steels, high design factors and increasingly stringent safety requirements have increased the operating pressure levels and, consequently, the need for further studies to avoid and prevent premature pipe failure.
Amilton de Sousa Lins +2 more
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Wear, 2020
Abstract The objective of this work is to establish a performance classification based on the mass loss of API 5L X80 and 5DP S steel drill pipes caused by multiphase-flow-induced corrosion and cavitation. Multiphase-flow-loop tests were conducted using a mixture of 20% heavy oil (150 cP) + 80% deionized water, containing 15% of sodium chloride, at ...
C.A. Silva +4 more
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Abstract The objective of this work is to establish a performance classification based on the mass loss of API 5L X80 and 5DP S steel drill pipes caused by multiphase-flow-induced corrosion and cavitation. Multiphase-flow-loop tests were conducted using a mixture of 20% heavy oil (150 cP) + 80% deionized water, containing 15% of sodium chloride, at ...
C.A. Silva +4 more
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Karakterizacija mikrostrukture zavara čelika API 5L X80
2012Svrha ovog diplomskog rada je karakterizacija mikrostrukture zavarenih spojeva analiziranog čelika. Korišteni materijal je visokočvrsti konstrukcijski čelik API 5L X80 debljine 10 mm. Za analizu je korišteno 9 uzoraka. Uzorci su zavareni MAG postupkom na robotskoj jedinici u Laboratoriju za zavarene konstrukcije.
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