AMPP Store - Products tagged with 'hydrogen embrittlement'

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Effect of Dissolved Oxygen on Fatigue Crack Growth Rate of Low Alloy Steels in Saltwater with Cathodic Protection Environment

Product Number: 51323-18913-SG

Author: Arshad Bajvani Gavanluei, Jenny Crump, Joseph Wilhelmi, Jack Smith, Paul D. Bunch

Publication Date: 2023

$20.00

Low alloy steels (LAS) are widely used in the marine and offshore oil and gas industry for various applications from bolting to large pressure containing heavy wall forgings. These materials are subject to various types of corrosion (general or uniform, pitting, crevice, etc.) and degradation in seawater environment. However, their selection for the applications, in comparison with stainless steels and corrosion resistant alloys, is justified due to their availability, manufacturability, proven service history, and lower cost.

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Effect of Microstructural Particularities on the Corrosion Resistance of Nickel Alloy UNS N07718 – What Really Makes the Difference

Product Number: 51317--9068-SG

ISBN: 9068 2017 CP

Author: Jutta Kloewer

Publication Date: 2017

$20.00

Several mechanisms including Hydrogen-Enhanced Localised Plasticity (HELP) and Hydrogen-Enhanced De-cohesion (HEDE) have been identified as contributing to the hydrogen embrittlement susceptibility of UNS N07718, depending upon microstructural particularities in the material.

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Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 1: Constant-load (Dead-weight) Test

Product Number: 51324-20715-SG

Author: Taishi Fujishiro; Taro Muraki; Nobuyuki Ishikawa; Daichi Izumi; Takuya Hara

Publication Date: 2024

$40.00

Sulfide stress cracking (SSC) occurs in steel exposed to sour environments. Ni promotes the formation of a crack-like corrosion morphology (so-called stress groove or fissure), which accelerates the SSC; however, the mechanisms underlying fissure formation and growth are not fully understood. In this study, the effects of Ni on SSC and fissures were investigated. Constant-load tests were conducted at various potentials using TS 800 MPa grade steel with and without 1 % Ni addition. The fissures were formed near the corrosion potential on adding Ni. Anodic or cathodic polarization promoted SSC, suggesting that SSC was affected by both active path corrosion (APC) and hydrogen embrittlement (HE) mechanisms. In addition, the fissure shapes and crystal orientations of the microstructure were analyzed to classify the fissures as dissolution (corrosion) or mechanical cracking. Further, characteristic grooves promoted by Ni were confirmed to be APC.

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Effect of Ni on Sulfide Stress Cracking and Stress Grooving in Carbon Steel - Part 2: Four Point Bend Test

Product Number: 51324-20709-SG

Author: Nobuyuki Ishikawa; Taishi Fujishiro; Eiji Tada; Daichi Izumi; Junji Shimamura

Publication Date: 2024

$40.00

Four point bend sulfide stress cracking (SSC) tests were carried out under various conditions of H2S partial pressure, pH, soaking time, and applied stress to investigate the formation of stress groove (or fissure) and SSC behavior in TS 800 MPa (116 ksi) grade steel plates with 1%Ni added and 0% Ni steels. Under low hydrogen sulfide (H2S) partial pressure conditions, a fissure was formed only in the 1%Ni steel, although no SSC occurred. Morphology of the fissure in 1% Ni steel indicates that fissure extends by a corrosion, which is also called the anodic dissolution or the active path corrosion (APC). The fissure in 1%Ni steel grew almost linearly with soaking time in the test solution with stabilized pH condition. Formation and growth of fissure was enhanced by higher applied stress and there was a limiting stress for the formation of fissure. SSC occurred in both steels under high H2S partial pressure and low pH conditions. Detailed metallographic investigation for SSC cracks revealed that a corrosion pit initially formed then turned into a crack possibly by hydrogen embrittlement (HE), then finally caused unstable crack extension to rapture the specimen. Based on the experimental results for the fissure formation and SSC, the effect of both APC and HE are discussed.

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Effect Of Soil Environment On Hydrogen Embrittlement Behavior Of X60 Steel

Product Number: 51322-17705-SG

Author: Wang Xiuyun, Yang Zhiwen, Wang Yao, Xing Yunying, Feng Min, Chen Yingfeng, Liu Xiaotong, Zhang Lei

Publication Date: 2022

$20.00

With the rapid development of China's economy, energy and transportation industries have developed rapidly, and more and more oil and gas pipelines and urban rail transit have been built and put into use. Urban rail transportation systems, such as subways or light rail, generally use direct current traction and backflow through the rail. Because the track is not completely insulated from the earth, it is inevitable that some electric current will be discharged from the track to the earth to form stray electric current, which will cause interference to the surrounding metal components such as buried oil and gas pipelines.

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Effects of temperature on hydrogen absorption into steel bars by cathodic charging in solution containing ammonium thiocyanate

Product Number: 51323-18931-SG

Author: Takuya Kamisho, Ryuta Ishii, Masayuki Tsuda

Publication Date: 2023

$20.00

Steel bars used in pre-stressed concrete structures are constantly subjected to tensile stress, and some steel bars have been reported to fracture due to hydrogen embrittlement. It is important to know the hydrogen embrittlement behavior in steel bars to prevent fracture.

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Environmentally Assisted Cracking Of Nickel Based Alloy 955 In Saltwater With Cathodic Protection For HPHT Application

Product Number: 51322-17768-SG

Author: Arshad B Gavanluei, Vipul Shinde, Manuel Marya, Ramgopal Thodla, Alexis Simon, Stanley Gregory

Publication Date: 2022

$20.00

Precipitation hardened (PH) Ni-based alloys have been utilized in oil and gas industry for decades. Among them, UNS1 N07718 because of its performance in sour wellbore fluids and in hydrogen charging environments has received the most attention for multiple upstream applications such as tubing hangers, production stab, multi-phase flow meter bodies, valve stems, etc. It has been reported that the alloy performance is generally acceptable for many applications up to 175 °C (350 °F) – 204 °C (400 °F) in the exposed wellbore environments such as sour production fluid, completion brine, and depending on metallurgical processing and microstructure externally exposed to SWCP at the seabed temperature.

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Evaluation Of Hydrogen Embrittlement Of Nickel-Based Alloys In Cesium Formate With H2S/CO2

Product Number: 51322-18024-SG

Author: Xiaoji Li, Ramgopal Thodla

Publication Date: 2022

$20.00

Cesium formate (CsFo) brines have been used as the drilling and/or completion fluids in oil and gas wells in need of high-density fluids.^1,2 Multiple studies on corrosion of steels and corrosion resistance alloys (CRA) in formate environments have been reported in the literature.^2-8 It was known that the formate brines could undergo significant decomposition to form hydrogen when in contact with catalytic surfaces which CRA can act as. Therefore, there have been concerns that the CRA may catalyze the decomposition of formate brines to accelerate the generation of hydrogen which in turn may embrittle certain CRAs and endanger the relevant well equipment.

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Evaluation of the Hydrogen Diffusion and Transport Kinetics in ASTM A508 Grade 4N

Product Number: 51321-16404-SG

Author: Esteban Rodoni/Andreas Viereckl/Zakaria Quadir/Garry Leadbeater/Mariano Iannuzzi

Publication Date: 2021

$20.00

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Evaluation Of The KIEC Of UNS N07718 With And Without Delta Phase In Simulated Seawater With Cathodic Protection Using Double Cantilever Beam Tests

Product Number: 51321-16652-SG

Author: Adam C. Rowe; Suresh Divi

Publication Date: 2021

$20.00

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Extreme high-speed laser application of coating to prevent hydrogen embrittlement in metals

Product Number: 51323-19546-SG

Author: Yingwei Wu, Josh Barras, Jhonattan Gutjahr, Carl Hauser, Yuanbo T. Tang, Roger C. Reed, W. Mark Rainforth

Publication Date: 2023

$20.00

Hydrogen as a promising alternative energy source that is forecasted to potentially transform future power generation toward new-zero. However, its widespread adoption has proven challenging owing to difficulties around storage, transportation, and usage due to catastrophic failures i.e. hydrogen embrittlement (HE). This is particularly severe for high-strength structural steel that must be designed against fatal fractures; it is also relevant to parts that are not designed for hydrogen exposure due to the prevention of accidental spill or leakage.

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Failure of a Vaned Diffuser in a Sour Gas Compressor

Product Number: 51317--9073-SG

ISBN: 9073 2017 CP

Author: Vishwas Gadgil

Publication Date: 2017

$20.00

Failure of a diffuser (with vanes, made from material P265GH) is investigated. The gas compressor was in service for over 10 years. The gas contained both CO2 and H2S. Relative humidity of the gas was 100 %. It was found that the diffuser was fractured in 3 locations.

Products tagged with 'hydrogen embrittlement'

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