Stress Corrosion of X80 Pipeline Steel Welded Joints by

Weldability and SAW welding wire of X80 pipeline steel

The surface of X80 steel pipeline welded joint was processed with laser shock processing (LSP),and the microstructure and roughness of welded jointTwin-Wire Pulsed Tandem Gas Metal Arc Welding of API X80 Twin-Wire Pulsed Tandem Gas Metal Arc Welding process with high welding production efficiency was used to join the girth weld seam of API X80 steel linepipe of 18.4 mm wall thickness and 1422 mm diameter.The macrostructure,microstructure,hardness,and electrochemical corrosion behavior of welded joints were studied.Effects of temperatureThe effect of hydrogen on stress corrosion behavior of X65 Mar 01,2016 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;The welded joint of steel is the most sensitive parts for corrosion failure.According to the weld residual stress,microstructure,hardness and the study of the potential distribution in the solution,HAZ of welding joint of pipeline steel is the SCC sensitive parts in neutral pH environment.

The Influence Of Weld Heat-Affected Zone On Stress

Mar 16,2008 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;Colonies of stress corrosion cracks are often seen around weld heat-affected zones (HAZs) in pipelines that are operating in the field in contact with near-neutral pH (NNPH) environment.Research on stress corrosion cracking (SCC) of welded line pipe steel can contribute knowledge that is important in establishing pipeline integrity.The Corrosion Characterization in Simulated HeatThe microstructure of X80 pipeline steel base material used in this study is shown in Fig.3.It is shown that the X80 steel is one kind of dual-phase steel,The microstructure is polygonal ferrite with fine grain and granular bainite embellished by martensite plates and retained austenite (so called M/A islands) as the secondary phase.Susceptibility Study to Hydrogen Embrittlement of Welded Pipelines for oil and gas,manufactured in high-strength low-alloy steels (HSLA),such API pipes,promote high levels of strength and fracture toughness.Therefore,it is important to ensure this high level of toughness in the welded joint.When the pipelines are exposed for many years to wet H2S environments,they can fail due to hydrogen embrittlement.

Sulphide Stress Cracking in X80 Pipeline Steel Welds

The utilization of high strength linepipes provides various benefits,including reducing construction cost,and operational cost.On the other hand,the girth welds for such pipelines are welded onsite,and simultaneously require strength overmatching of the weld joint,high fracture toughness,and low hardness,regardless of whether these mechanical properties areStudy on the Corrosion Behaviours of X80 Pipeline Steel conditions[7].Currently,most studies on the corrosion of X80 pipeline steel have focused on its stress corrosion behaviour [6,8-13].However,studies on the corrosion behaviour of hot-wire tungsten inert gas (TIG)-welded joints of X80 have rarely been reported[13].Therefore,to ensure the safety and reliability of X80 pipeline steel,the corrosion properties of X80 welded jointsStress corrosion cracking behavior of X90 pipeline steel Apr 01,2019 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;X90 pipeline steel is a new generation of pipeline steel developed after X80 and X100 pipeline steel,and it is now a new research hotspot ,.The researches on X90 pipeline steel mainly focus on its pilot manufacture and development [15] ,[16] ,[17] as well as structure and performance [18] ,[19] ,[20] .

Stress Corrosion of X80 Pipeline Steel Welded Joints by

Jan 01,2013 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;The X80 pipeline steel was welded by submerged arc welding,and the stress corrosion behaviors of the welded joints were analyzed by SST (slow strain test) in the air,NACE solution (no H 2 S),and Foundation Item Item Sponsored by Natural Science Foundation of Jiangsu Province of China (BK2009104) ; Innovation Program of Graduated Student ofStress Corrosion Cracking of a 304 Stainless Steel Elbow Mar 11,2020 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;This research was focused on the failure analysis of a cracked SS304 stainless steel elbow from a chemical plant.The service life of the elbow was 2 years and 8 months.The elbow was welded with two straight pipes at two ends.Cracks were located mainly at positions close to the weld joint and the arc where very strong tensile residual stress existed.CorrosionSteel Pipeline - an overview ScienceDirect TopicsD.Storey,in Underground Pipeline Corrosion,2014.Abstract High pressure steel pipelines are an important part of our infrastructure.A wide range of flaws,such as corrosion or cracking,can affect these pipelines,degrading their integrity and leading to reduced lifetimes,severe ruptures or fatal errors.

Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextSSC resistance of pipeline welds.[Sulfide stress cracking

In this work,the hydrogen sulfide stress-corrosion cracking (SSC) susceptibility of a welded API X-80 pipeline was investigated.For this purpose,steel welding was carried out normal to the rolling direction using a 60{degree} single V-joint design.Recent Welding-Related Pipeline Technology Advances atFig.1.Macrosection of Yb fibre laser-MAG arc hybrid weld in X80 line pipe steel made at 1.8m/min.The welds were inspected both visually and by radiography and were found to be of good quality with no internal defects.Samples were also taken from these welds and used for hardness cross-weld tensile and Charpy impact testing.

Performance of Welded High-Strength - CORROSION Online

Sulfide stress cracking (SSC) susceptibility of gas metal arc welded API 5L X70 and X80 line pipe steel was tested using standard and modified NACE TM0177 (Method A) testing.Two applied stresses and three concentrations of dissolved hydrogen sulfide (H 2 S) were used.The effect of peak weld hardness was examined by using three weld conditions.Mechanical Properties and Hydrogen Induced Stress CORROSION 2006 March 1216,2006 San Diego,California All Days. Article Navigation Mechanical Properties and Hydrogen Induced Stress Corrosion Cracking of Super 13Cr Steel Welded Joints Jose Elver Ramirez.Jose Elver Ramirez Edison Welding Institute.Search for other works by this author on This Site.Google Scholar.Local corrosion characteristics of a graphene-oxide Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;In the pipeline construction,high weld quality and high production efficiency are two essential requirements.However,these requirements are hardly fulfilled in the welding of girth weld seam of API X80 steel pipe using conventional gas metal arc welding (GMAW) process with single-wire and multilayer [6].

Improvement of Corrosion Resistance of Simulated Weld

welded joints in pipeline steel by exploring the influence of electropulsing treatment on the corrosion resistance of the HAZ mainly containing martensite.To this end,the samples of the HAZ of simulated X80 welded joints,whose microstructures were mainly martensite,were prepared by water quenching.Then,the corrosion resistance of the simu-Images of Stress Corrosion of X80 Pipeline Steel Welded Joint jcscpX80jcscpX80jcscpX80jcscpX80researchgate.netThe Spot Welding Parameters of Joints Used for Mechanical imagesStress corrosion cracking behavior of X80 steel welded Hydrogen was a key factor resulting in stress corrosion cracking (SCC) of X80 pipeline steel in Ku'erle soil simulated solution.External Stress Corrosion Cracking Risk Factors of High The influence weights of various sensitive factors,such as steel grade,applied potential,temperature and soil environment,on stress corrosion cracking behavior of high-grade pipeline steel were studied by means of orthogonal test at mixed level and slow strain rate test.The stress corrosion behavior of X80 pipeline steel in near neutral and high pH simulated soil

Effects of microstructure alteration on corrosion behavior

Abstract In the present work,a heat treatment process was used to modify corrosion behavior of heat affected zone (HAZ) and weld metal (WM) in welded pipe steel of grade API X70.A one-step austenitizing with two-step quenching and subsequent tempering treatment was performed to alter the microstructure of HAZ and WM.The hardness and strength values were controlled toEffects of laser heat treatment on the fracture The surfaces of X80 pipeline steel welded joints were processed with a CO 2 laser,and the effects of laser heat treatment (LHT) on H 2 S stress corrosion in the National Association of Corrosion Engineers (NACE) solution were analyzed by a slow strain rate test.The fracture morphologies and chemical components of corrosive products before and after LHT wereEffects of laser heat treatment on the fracture The surfaces of X80 pipeline steel welded joints were processed with a CO 2 laser,and the effects of laser heat treatment (LHT) on H 2 S stress corrosion in the National Association of Corrosion Engineers (NACE) solution were analyzed by a slow strain rate test.The fracture morphologies and chemical components of corrosive products before and after LHT were

Effects of Welding Methods on Corrosion Resistance of

Apr 26,2012 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;In view of severe corrosion of welding joint of pipeline steel used for oil transportation,the welding joints of X65 pipeline steel formed by two different welding processes,plasma arc welding (PAW) and TIG welding used for backing welding and MIG welding for subsequent filling welding,were compared in terms of the microstructure,the hardness and the corrosion resistance with the welding Effects of Second Thermal Cycles on Microstructure andThe effects of the gas metal arc welding (GMAW) thermal cycle on the microstructures and carbon dioxide (CO 2) corrosion behaviors of X80 pipeline steel and its coarse-grained heat-affected zone (CGHAZ) from submerged arc welding (SAW) were studied.Different microstructural gradients were found to form in the two joints.The CO 2Effects of LSP on Fracture Morphologies of Stress The surface grain refinement and compressive residual stress of the welded joint by LSP is the main mechanism for the improvement of fatigue properties of the X80 pipeline steel welded joints.

Effect of Microstructure on the Stress Corrosion Cracking

An investigation was carried out on the effect of heat treatments on the stress corrosion cracking (SCC) resistance of X-80 pipeline steel in 0.01 M and 0.05 M sodium bicarbonate (NaHCO 3) solutions using the slow strain rate testing (SSRT) technique.The heat treatments were either water-quenched,water-quenched and tempered,water-sprayed,or kept in the asCrack growth in a welded microalloyed steel under sulfide In this work,the hydrogen sulfide stress-corrosion cracking (SSC) susceptibility of a welded API X-80 pipeline was investigated.For this purpose,steel welding was carried out normal to the rolling direction using a 60{degree} single V-joint design.After weldingCorrosion and Cracking Behavior in an API X-80 Steel (2014) 3D modeling of the hydrogen distribution in X80 pipeline steel welded joints.Computational Materials Science 83,158-163.Online publication date 1-Feb-2014. (2009) Effect of applied potentials on stress corrosion cracking of X70 pipeline steel in alkali solution.Materials Design 30:6,2259-2263.

Corrosion Fatigue of Welded C-Mn Steel Risers - TWI

Corrosion fatigue endurance data were obtained from welded joints in carbon steels over a period of several years as part of the European efforts to provide fatigue design data relevant to offshore structures operating in the North Sea .Since this research was directed principally at tubular steel jacket structures,the endurance data were Corrosion Fatigue Behaviour of Welded Risers and Pipelines Ebara at al.'Corrosion Fatigue Strength of Steel Welded Joints in Industrial Gas Environments'.The 5th International Symposium of the Japan Welding Society,April 1990,Tokyo,p.965-969.Szklarz K E 'Aggressive CO 2 corrosion and fatigue behaviour of pipeline girth welds',Paper No.00012,Proc.Corrosion 2000,NACE International,Houston Corrosion Behavior of Welded Joint of Q690 with CMTJan 01,2018 Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;Free Online Library Corrosion Behavior of Welded Joint of Q690 with CMT Twin.(Research Article) by International Journal of Corrosion; Engineering and manufacturing Alloys Mechanical properties Hardness Hardness (Materials) Specialty steels Steel Steel corrosion Welding

Cited by 26Publish Year 2013Author De-jun Kong,Yong-zhong Wu,Dan LongStress Corrosion of X80 Pipeline Steel Welded Joints by

The surfaces of X80 pipeline steel welded joints were processed with a CO2 laser,and the effects of laser heat treatment (LHT) on H2S stress corrosion inAuthor Yao ZongxiangPublish Year 2019Improvement of SCC behavior of pipeline steel X80 weld Download Citation Improvement of SCC behavior of pipeline steel X80 weld joint by shot peening The influence of shot peening on stress corrosion cracking (SCC) behavior of X80 pipeline steel Assessment of API pipeline steel surface and its Petroleum pipelines provide a safe and economical way of transporting commodities such as natural gas and crude oil in large volumes.They form

12345NextCorrosion behavior of the weld joint of X80 pipeline steel

Stress Corrosion of X80 Pipeline Steel Welded Joints by#0183;The SSAW pipe diameter range is from 20 inch (406 mm) to 100 inch (2540 mm).The advantage part is we can get the different diameter of SSAW pipes with the same size of the steel strip,there is a wide application for the raw material steel strip,and welding seam should avoid the primary stress,good performances to bear the stress.

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