AMPP Store - Products tagged with 'hisc'

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51316-6981-HISCC Resistance and Improvement Methods For Duplex and Super Duplex Stainless Steels

Product Number: 51316-6981-SG

ISBN: 6981 2016 CP

Author: Glenn Byrne

Publication Date: 2016

$20.00

The paper reviews the history of Hydrogen Induced Stress Cracking (HISC) failures of duplex and super duplex stainless steels when deployed subsea and subject to CP at potentials around minus 1V.

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51316-6982-Corrosion Management Of Assets Constructed In Super Duplex Stainless Steels (SDSS)

Product Number: 51316-6982-SG

ISBN: 6982 2016 CP

Author: Glenn Byrne

Publication Date: 2016

$20.00

Based on alloy development and manufacturer independent supply experience of super duplex steel over a 30 year period the paper considers some of the less well known but recurring problems and the methods used to ameliorate them.

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51318-10974-Validation of DNV RP F112 for Managing Hydrogen Induced Stress Cracking (HISC) in Super Duplex Stain

Product Number: 51318-10974-SG

Author: Roberto Morana / Kasra Sotoudeh / Lee Smith / Simon Smith

Publication Date: 2018

$20.00

A comprehensive test program is described quantifying the HISC performance of retrieved superduplex stainless steel subsea components and, comparing the actual performance against the limits derived following DNV RP F112: 2008.

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A Fracture Mechanics Approach To Characterizing Hydrogen Embrittlement Of Fasteners

Product Number: 51321-16798-SG

Author: Herman E. Amaya, Behrang Fahimi, Ramgopal Thodla

Publication Date: 2021

$20.00

Materials properties that are used in specific oil and gas environments are de-rated due to the risks associated with hydrogen embrittlement cracking. In oil production environments the concern is for the onset of stress corrosion cracking (SCC), while in seawater environments the concern is for Hydrogen Induced Stress Cracking (HISC). Both are hydrogen embrittlement phenomena with the distinction being the source of hydrogen for each. In SSC the source of hydrogen is from the presence of H2S in the oil production fluids, and in HISC the source of hydrogen is from the dissociation of water from the cathodic protection system. This paper is focused on the latter phenomena and aims to characterize the susceptibility of carbon alloy steels as applied in fastener applications, in a seawater environment under cathodic protection.

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AMPP TR21524-2023, Commentary on Standards Development for Selection and Qualification of HSC-Resistant Materials in Subsea Service with Cathodic Protection

Product Number: AMPP TR21524-2023

Publication Date: 2023

$109.00

As a companion document to MR21525, this Technical Report provides results, review and commentary on many investigations of HSC and includes important literature data, references, background information, service experience and related standards that were utilized in the development of the AMPP MR21525. Most of the information in this Technical Report covers findings from HSC field experience and HSC data from brine/CP exposure tests or from other cathodic charging experiments. It is important to note, in the use of MR21525 and in the review of data contained herein, that HSC can also be induced from hydrogenating environments and conditions other than from just from CP exposure alone. A non-exhaustive list of such conditions is presented later in this Technical Report.

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Effect Of Deleterious Grain Boundary Phase In N07725 On HISC Resistance And Performance Of An Optimized Alloy

Product Number: 51323-19252-SG

Author: Andreas Keplinger, Greg Chitwood, Jan Platl, Marianne Kapp

Publication Date: 2023

$20.00

Precipitation hardened (PH) nickel-base alloys are frequently used as engineering materials in the Oil & Gas industry. They excel because of their outstanding combination of strength, toughness, and corrosion resistance. In that regard, alloy N07725 is of high interest as it offers better corrosion resistance than the widely used N07718, while also offering better high temperature strength than solid-solution nickel-base alloys.

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Effect of Heat Treatment and Manufacturing Method on the Susceptibility to Hydrogen Induced Stress Cracking of UNS N06625

Product Number: 51324-20899-SG

Author: Eivind Bruun Thorstensen; Atle Helge Qvale; Vebjørn Andresen ; Roy Johnsen; Paal Bratland

Publication Date: 2024

$40.00

This paper presents results obtained from examining the effect of heat treatment and production method on the hydrogen induced stress cracking (HISC) susceptibility of UNS N06625 (Alloy 625). Five different versions of Alloy 625 were examined: Hot forged material heat treated at 920 °C, 1010 °C and 1100 °C respectively, material produced by hot isostatic pressing (HIP) and material that has been solution annealed and strain hardened (cold worked) at a temperature below secondary phase formation. The different versions of Alloy 625 were initially characterized by identifying the critical pitting temperature (CPT) by use of a modified ASTM G48 Method C test. Resistance to Hydrogen Embrittlement (HE) has been examined by use of stepwise loading of tensile specimens in a hydrogen charging environment in CortestTM proof rings, followed by fractography characterization and microstructural examination by use of Optical Light Microscope (OLM) and Scanning Electron Microscope (SEM). The hot forged and the HIP’ed versions of Alloy 625 that subsequently were heat treated, were found to be susceptible to HISC. The evaluation was based on a decrease in strength and ductility, as well as brittle fracture surfaces and secondary cracking on the samples’ outer surface. Among the hot forged and heat-treated versions, the samples heat treated at 1010°C were found to be the most susceptible to HISC, while (solution) heat treatment at 1100°C resulted in the lowest HISC susceptibility amongst the hot forged and heat-treated qualities. The solution annealed (1150 °C) and cold worked version showed a higher resistance to HISC, as no reduction in fracture strength, nor any secondary cracking were observed. The amount of grain boundary precipitations was found to be the main factor influencing the HISC susceptibility, where an increased amount of grain boundary precipitations led to higher susceptibility. The effect of grain size on the HISC susceptibility of samples charged with hydrogen were also considered, and the results indicate that larger grains have a beneficial effect on the ductility.

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Hardness And Nickel-Based Alloys

Product Number: 51323-18806-SG

Author: Robert Badrak, Julia Botinha, John Groth, Helena Alves

Publication Date: 2023

$20.00

This paper addresses the relationship between hardness and environmental cracking resistance in nickel base alloys. The work here builds on the presentation made to AMPP’s SC08 Fall 2021 meeting on October 19th.

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Influence of K-Rate and Hydrogen Charging on Fracture Toughness of a Super Duplex Stainless Steel

Product Number: 51318-10891-SG

Author: Carlos Eduardo Fortis Kwietniewski / Tiago Renck / Fabrício Pinheiro dos Santos / Adriano Scheid / Marcelo Sartori / Afonso Reguly

Publication Date: 2018

$20.00

To evaluate through fracture toughness tests the susceptibility of SDSS to HISC and to determine the effect of the cathodic protection potential and the stress intensity factor rate (K-rate).

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Strain Hardened Austenitic Corrosion Resistant Alloys’ Susceptibility to Hydrogen Induced Stress Cracking

Product Number: 51323-19235-SG

Author: Amrinder P.S. Dhillon, Xu Lu, Roy Johnsen, Ida Westermann

Publication Date: 2023

$20.00

Several offshore field failures in recent years have been attributed to Hydrogen Induced Stress Cracking (HISC) of high strength, highly corrosion resistant Precipitation Hardened Nickel Alloys (PHNA’s) such as UNS N07716, UNS N07718 and UNS N07725.

Hence, HISC is a constant concern regarding subsea components subjected to high tensile stress, and the industry is searching for solutions to their technical needs: High strength corrosion resistant alloys (CRA’s) resistant to seawater (high Pitting Resistance Equivalent number (PREN)) but also resistant to HISC.

For PHNA’s, improved processing (chemical composition limits and processing temperatures) and improved quality control methods as well as refined acceptance criteria are all under consideration.

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The History Of Hydrogen Induced Stress Cracking (HISC) Failures Of Duplex & Super Duplex Stainless Steels (DSS/ SDSS) Due To Cathodic Charging And The Potential For Improvement In HISC Resistance

Product Number: 51322-18070-SG

Author: Glenn Byrne, G. Warburton, R Francis

Publication Date: 2022

$20.00

As long ago as 1973, design codes1 considered the possibility of hydrogen embrittlement due to CP. Between 1986 and 1995^2-4 the failure of DSS fasteners subjected to CP were reported. These were associated with high ferrite levels in the steel (approximately 70%) combined with precipitation hardening at 475°C to give the high levels of strength desired for fastener applications. At the same time, the susceptibility of DSS welds to hydrogen embrittlement had been reported5. Just like the fastener failures, the hydrogen cracking of welds was associated with high ferrite levels (70%), highly restrained joints and in the case of welds, high levels of diffusible hydrogen.

Products tagged with 'hisc'

Association for Materials Protection and Performance