... was studied using Potentiodynamic Polarization testing against 3.5 wt.% NaCl solution. Graphene addition improved the electrochemical and wear behavior by the reduction of porosities and improved hardness, respectively. Introduction Pipelines, process equipment for hydrocarbon production and refining...

... Abstract To obtain heat affected zone (HAZ) hardness levels below maximums specified in the current (2015) edition of NACE (1) MR0175/ISO (2) 15156-3 for sour service use, welded super martensitic stainless steels (SMSS) need post weld heat treatment (PWHT). PWHT is mainly done by stress...

... 939 MPa (135ksi) and close to the hardness limit of HRC 34 identified in API 2 20e 3 . These results can be represented graphically and can serve to establish design operating limits for the materials in a seawater environment under CP. Characterizing Hydrogen Embrittlement Susceptibility...

... B10 at 40 °C was evaluated. Ageing of biodiesel increases acidity which might propagate polymer corrosion. The materials were evaluated as resistant, if the loss in tensile properties (tensile strength and elongation at break) and Shore hardness remained under 15 % compared to the initial unexposed...

... integrity scale removal effect Publication Division permission scale removal ratio texas 77084 Boiler remediation of hydrates Efficiency dispersant Scale Removal wax inhibition asphaltene remediation scale inhibition polymer corrosion rate hardness scale formation manuscript hardness...

... & mining Corrosion Management chemical composition texas 77084 Production Chemistry type 410 weld metal stainless steel manuscript filler metal Corrosion Inhibition cr stainless steel Houston hardness H2S management type 405 fabrication steel permission restoration weld A Review...

... uniform through wall hardness when heat treated to higher strength while maintaining adequate ductility and toughness. Since, some these production environments could have H 2 S; the Sulfide Stress Cracking (SSC) resistance of these steels would be an important factor in consideration of their use...

... of experimental and commercial benchmarks will be compared, including pot life, Konig hardness, low temperature curing performance, dry time, and cathodic disbondment (CD) at elevated temperatures. CD test results at dry film thickness (DFT) above 30 mils (750 microns) and less than 20 mils (500 microns) are also...

... who carried out welding trials using submerged arc welding (SAW) process. Testing conditions and results will be provided, that show especially that the material meets NACE MR0175 / ISO 15156-2 requirements for hardness in heat affected zone (HAZ) thanks to fine-tuned welding parameters, including...

.... To verify the validity of this hypothesis, it is recommended the alloys are examined using transmission electron microscopy (TEM). Vickers hardness test results (HV5) are presented in Table 2. The average hardness of the as-received Alloy 718 material was 371 HV, whereas the as-received Alloy 945 and 945X...

... are known to suffer from Sulfide Stress Cracking (SSC). 7-8 Two main criteria are often considered for duplex weld quality assessment which are ferrite fraction and hardness. An allowable ferrite fraction range of 35-65% and average hardness of 310 HV 10 with no point higher than 320 HV 10 are commonly...

... ultrasonic inspected for internal cracks. Specimen was sectioned at any region with crack indications and the cross section was observed for internal cracks. HIC parameters were measured and associated with microstructure and hardness profile. Results showed that HIC susceptibility is related to the hardness...

... objective of this work was to evaluate the mechanical integrity of an iron carbonate layer, grown on an API 5L X65 steel, by nanoindentation and scratch test methods. Berkovich and Vickers-type indenters were used to determine the hardness of an iron carbonate layer and its X65 steel substrate. A scratch...

... as a guide. nonmetallic inclusion HTHA texas 77084 Houston inspection chemical composition internal surface manuscript hydraulic fracturing Thickness mechanism specimen sample 0 Downstream Oil & Gas reactor Publication Division permission external surface hardness defect...

... required to damage iron sulfide layers up to the point of exposing the substrate, well-defined iron sulfide layers were developed in a 4-liter glass cell and the mechanical properties of the layers, such as hardness and adhesive strength, were investigated using a mechanical tester. To develop the iron...

... number of connection cycles required in modern consumer electronic charging applications. Previous work has shown that utilizing nanocrystalline NiW alloys significantly improves wear performance by increasing mechanical strength and hardness.1 This has allowed for a significant reduction...

... Production Chemistry criteria Corrosion Inhibition H2S management steel permission Houston texas 77084 alloy revision nace mr0175 iso 15156 corrosion resistant alloy manuscript oilfield chemistry Corrosion Management carbon ballot Publication Division stainless steel requirement hardness...

... These efforts to date predominantly focus on deterministic approaches, such as hardness specifications, limiting certain grades of steels from being used, thermal treatments, and plating specifications. Although deterministic approaches are easy to follow and are generally conservative, they also have some...

... is increased (box-expanding) or reduced (pin-nosing). It specifies a minimum temperature of 595 °C during thermal stress-relieving to properly recover the corrosion resistance, only if the strain level exceeds 5% in the case of low alloy steels showing hardness below 22 HRC, and in any case if the hardness...

... generation of Thermal Insulative Coatings is available in the form of 2-component, water based epoxy technology. Epoxy technology has brought an improvement over acrylic based materials in terms of Adhesion, hardness and tensile strength, among others. These inherent properties have been transformed...