... works on hydrogen embrittlement (HE) of nickel-based alloys has been quite significant. Much work had been done previously in other industries, nuclear and aeronautic in particular. Despite this work, a lot remains to be understood. Among them, precipitation-hardened (PH) nickel alloys UNS N07718 has...

... tested as 10 mm diameter studs under dead weight loading in natural seawater at 5°C and polarized at -1.1 V vs Ag/AgCl to simulate cathodic protection. High strength nickel alloys and stainless steels were selected as potential candidates for fasteners. Threads were rolled, not machined. Table 1 shows...

... G48 A, C and D. Nickel Alloys Alloy UNS N08825 Alloy UNS N08827 Alloy 825 CTP Crevice corrosion Pitting corrosion weldability In order to improve resistance to chloride-induced localized corrosion, the chemical composition of Alloy UNS N08827 (herein called Alloy 825 CTP) has been optimized...

... N07718 into the most preferred applied nickel alloys in the Oil & Gas industry. ¹ However, recent field component failures reported the occurrence of hydrogen embrittlement, ² which can be a serious limitation to the material application. The continuing development of oil...

... ( 2013 ). 13 McConohy   G. , & Kruizenga   A. , Molten nitrate salts at 600 and 680°C: Thermophysical property changes and corrosion of high-temperature nickel alloys . Sol. Energy   103 , 242 - 252 ( 2014 ). The results for the polarization curves of each alloy sample are given...

...Abstract Conventional diffusional heat treatments are usually performed when an increase on the surface hardness of a certain component is desired. However, some alloys, such as duplex stainless steels and nickel alloys cannot be submitted to the temperature ranges that these treatments require...

... resistance than the existing nickel and iron-based alloys. Nickel Alloys Stainless Steel Hydrochloric Acid Sulfuric Acid Nitric Acid Mixed Acids Oxidants Iso-Corrosion Curve Electrochemical Techniques INTRODUCTION The choice of materials for applications in concentrated acids at ambient or higher...

...Abstract In this paper, a detailed analysis was performed to define the variance between both Nickel alloys 825 and 625 Multi-alloys. A comprehensive experiment and testing was done to evaluate both mechanical and chemical properties for the flanges with weld overlay, fittings and pipe components...

..., 316L may be compromised by sensitization, and the aim of a standard test such as ASTM G28 test is to confirm this. Acceptance criteria When nickel alloys and stainless steels exhibit grain boundary precipitation that is deleterious to intergranular corrosion resistance, they are referred...

... and manifold additional points. The process and product requirements may refer to different aspects like catalytical reactions and consequent interaction with the catalysts, limitation of metals content e.g. in final product, discoloration by corrosion products and others. Nickel and nickel alloys have very...

... selection as the demand for marine exhaust scrubbers grows to meet the new regulations. ASTM G48 marine scrubber stainless steels nickel alloys pitting corrosion crevice corrosion localized corrosion welding INTRODUCTION Due to new environmental regulations, substantial growth is expected...

... resistance of stainless steels and nickel alloys. It is a simple immersion test where the test sample is placed in a temperature-controlled solution of ferric chloride (FeCl₃). The FeCl₃ solution provides an aggressive environment to promote localized corrosion due to the presence...

..., the objective of the current study is to examine focuses on the effects of Cr, Mo, and N and the applicability of PRE on the localized corrosion resistance of CRAs. APPROACH Abstract The localized corrosion resistance of stainless steels and nickel alloys is primarily due to alloying elements. The most...

...Plain Slow Strain Rate Test Method Abstract High strength Nickel alloys are widely used in subsea and downhole O&G applications for their excellent combination of mechanical properties, toughness and corrosion resistance in sour environments. The trend in the O&G industry is for using...

... calculated from weight-loss measurements, assuming that the uniform corrosion as the primary corrosion type. The reported corrosion rate is the average of the two test coupons. Abstract Nickel alloys, especially the nickel(Ni)-chromium(Cr)-molybdenum(Mo) family, offer excellent resistance to hydrochloric...

... corrosion resistance of a number of Fe-Cr-Ni and Fe-Cr-Ni-Mo materials, such as stainless steels UNS S30400 (Type 304) and UNS S31600 (Type 316), and nickel alloys such as UNS N08904 (Alloy 904L), UNS N08810 (Alloy 800H), UNS N08825 (Alloy 825), N06600 (Alloy 600) and UNS N06625 (Alloy 625), in a series...

... of the alloys tested. Metal recession and internal oxidation increased with increasing cycle frequency, but this was found only in alloys that were already susceptible to accelerated oxidation at 982°C. Cyclic Oxidation Nickel Alloys INTRODUCTION Adherence of the protective scales used by heat resistant...

... and cracking susceptibility since pitting may need to be established first before cracking nucleates [ 20 ]. Pitting Resistance of Nickel Alloys in Seawater Ni based alloys were developed to fill a need in the industry, where highly corrosive streams and high temperature environments exist. The main alloying...

... and potentiodynamic polarization plots obtained in accordance with the ASTM G59-97 standard. The morphology of the attack was determined using optical and scanning electron microscopy coupled with energy dispersive spectroscopy (EDS). hot corrosion nickel alloys iron alloys DC electrochemistry resistance...

... temperatures it readily forms nickel-sulfide compounds resulting in sulfidation. The resistance of a nickel-alloy to sulfidation can be improved by its chromium content. Nickel alloys with high contents of chromium are much more resistant than alloys with less. For example alloy UNS N06600 with only 16...