AMPP Store - Individual Conference Papers

Available for download

Effect Of Impurity On The High-Temperature Corrosion Performance Of Alloys In Supercritical CO2

Product Number: 51322-18055-SG

Author: Kaiyang Li, Xue Han, Yimin Zeng

Publication Date: 2022

$20.00

Over the years, the supercritical carbon dioxide (s−CO₂) Brayton cycle has been developed as a promising working fluid to replace supercritical water (s−H₂O) Rankine cycle. It could be used in various energy systems, including Generation IV nuclear reactors, concentrated solar power plants, fossil fuel thermal power plants, waster heat recovery, etc. due to its merits of high thermal efficiency, simple physical footprint, compact equipment size, high flexibility on operation, simple layout, compact turbomachinery.¹

Available for download

Effect Of Inhibitor Component On Inhibitor Efficiency - Inhibitor Types And Intensifier-

Product Number: 51322-17791-SG

Author: Hirotaka Mizukami, Ayano Yasui, Tatsuya Sei, Takashi Ito, Susumu Hirano, Toshiyuki Sunaba, Akiyoshi Kimura, Reiko Ikeda, Mitsuru Uno

Publication Date: 2022

$20.00

A lot of oil and gas facilities face corrosion problems because the production fluid contains some corrosive components represented by CO₂. Generally, corrosion inhibitors are used in order to mitigate corrosion problems of tubing and pipeline. Imidazoline is known as one of the active ingredients of corrosion inhibitors and widely used in the oil and gas industries. However, imidazoline-type inhibitor is easily hydrolyzed to amide if water mixes into it.

Available for download

Effect of Inhibitor Concentration on the Adsorption and Inhibition Mechanism for Mica and Carbon Steel Studied by In Situ Atomic Force Microscopy

Product Number: 51323-19200-SG

Author: H. Wang, B. Brown, S. Nesic, A. Pailleret

Publication Date: 2023

$20.00

In hydrocarbon production systems, mild steel is overwhelmingly used for the construction of pipelines and tanks for the transmission and storage of crude oil, natural gas, and derived petroleum products. Although mild steel has excellent mechanical properties and low cost, it is susceptible to corrosion attack in typical service environments. Inhibition of internal corrosion is essential for assuring asset integrity of oil and gas transportation pipelines.

Available for download

Effect of Laser Marking on Corrosion Performance of Metallic Materials in Different Environments

Product Number: 51321-16495-SG

Author: Thanh Nam Vu/ Karthik Krishnan/ Chad Glaesman

Publication Date: 2021

$20.00

Available for download

Effect of Loading Profile and Sour Environment on Cracking behavior of C110

Product Number: 51323-19401-SG

Author: Angeire S. Huggins-Gonzalez, Ramgopal Thodla, Feng Gui, Bostjan Bezensek, Brian Chambers

Publication Date: 2023

$20.00

Hydrogen sulfide (H2S) is one of the most common gases in the oil and gas industry. Once dissolved in aqueous environments, H2S can induce corrosion damage to carbon steel. It has been proposed that the severity of the damage is related to parameters such as temperature, partial pressure, microstructure of steel, etc.

Available for download

Effect Of Localized Stress On Initiation Of IGSCC

Product Number: ED22-17308-SG

Author: Takaharu Maeguchi, Kyohei Hayakawa, Kimihisa Sakima, Tomotaka Miyazawa

Publication Date: 2022

$20.00

In a polycrystalline material, the stress distribution on a microscopic scale is not uniform due to the elastic anisotropy and slip systems of constituent crystal grains. This leads to localized high stresses, especially at grain boundaries, when a load is applied to the material. In this paper, this localized stress is called as “microscopic stress”, distinguishing it from that in a homogeneous continuous body.

Available for download

Effect of Low Frequency on the Fatigue Response of Wellhead Extension Joint Welds Exposed to Simulated Seawater with Cathodic Protection

Product Number: 51319-13071-SG

Author: Adam Rowe

Publication Date: 2019

$20.00

This work considers wellhead extension joint welds for high-pressure deepwater Gulf of Mexico prospects with a design shut-in tubing pressure (SITP) above 15000 psi. The structural welds joining 75K 8630M low pressure wellhead housing (LPWH) forgings to API 5L Grade X80M PSL 2 conductor casing are expected to be fatigue-sensitive due to water depths approaching 6000 ft. and substantial estimated weight of a 20K BOP stack. Cyclic loading is expected to be from wave‑induced motions (WIM) and vortex‑induced vibration (VIV). The wellhead extension joints extend 10 to 15 ft. above the mudline and will be exposed to seawater as well as cathodic protection when the wellhead is connected to either the BOP stack or the tubing head spool and subsea tree.The present work considered both S-N and fracture mechanics based designs. Fatigue curves such as those in BS (British Standard) 7608 are not yet proven for structural steels with yield strengths in excess of 400 N/mm2 (58 ksi) in the presence of cathodic protection and fatigue crack growth laws such as those in BS 7910 for steels in a marine environment are only applicable to materials with yield strengths less than 600 N/mm2 (87 ksi). Materials in the subject assemblies may have yield strengths in excess of 690 N/mm2 (100 ksi) so both S-N and fatigue crack growth rate (FCGR) testing in a simulated seawater with cathodic protection environment were determined to be appropriate. This paper describes the environmental fatigue testing of welds and the relationship between the test data established fatigue curves and published literature. Tests were performed in a 3.5% NaCl solution at 40 °F with pH adjusted to 8.2 and an applied potential of -1100 mV Ag/AgCl. Frequency scans were conducted in several weld microstructures to assess growth rate sensitivity of each microstructure to cyclic frequency and the fatigue response at the low end of the frequency range was explored in greater detail.

Available for download

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.

Available for download

Effect Of Microstructure On Mechanical Behaviour Of Ni-Base Alloy Dissimilar Metal Welds

Product Number: ED22-17104-SG

Author: Noora Hytönen, Yanling Ge, Zaiqing Que, Sebastian Lindqvist, Jari Lydman, Ulla Ehrnstén, Paavo Rautala,Iikka Virkkunen, Pål Efsing

Publication Date: 2022

$20.00

Dissimilar metal welds (DMWs) are commonly used in the pressure vessel nozzle to safe-end weld between the ferritic low-alloy steels (LAS) and the austenitic stainless steels (SS), using a nickel-base filler metal. The complex DMW interface consists of different microstructural regions including, for instance, the heat-affected zone (HAZ), carbon-depleted zone (CDZ), carbon build-up at fusion boundary, partially melted zone (PMZ) and carbide precipitation zone. There is still knowledge lacking on the microstructural characteristics of the interface of DMWs upon post-weld heat treatment (PWHT). DMWs are potential concerns regarding the structural integrity of the nuclear power systems. In particular, the LAS/nickel-base alloy weld metal interface is known to develop a local strength mismatch upon PWHT and during long-term ageing. A significant chemical composition gradient, especially in terms of carbon (C) and chromium (Cr) associated with a complex microstructure have been observed to form at the interfaces. The different welding orientation, heat transfer and PWHT can result in different microstructure and mechanical properties.

Available for download

Effect of Microstructure on the Corrosion Resistance of Super Duplex Stainless Steels: Materials Performance Maps

Product Number: 51317--8923-SG

ISBN: 8923 2017 CP

Author: Mariano Iannuzzi

Publication Date: 2017

$20.00

In this work, the effect of Tungsten on the precipitation kinetics of a 25% Cr SDSS, namely, UNS S32760 was quantified by constructing Time-Temperature-Transformation (TTT) diagrams.

Available for download

Effect of Minor Ce Additions on Corrosion Behavior of Experimental Pipeline Steel

Product Number: 51324-20450-SG

Author: Zineb Belarbi; Paul D. Jablonski; Ömer N. Doğan; Martin Detrois; Richard P. Oleksak

Publication Date: 2024

$40.00

Minor additions of rare earth elements (REEs) have been shown to improve various steel properties. In particular, Cerium (Ce), as a relatively abundant and inexpensive element, has received attention as a potentially beneficial minor alloying addition for a variety of steel applications, including pipeline materials. The objective of this work is to investigate the effect of Ce on corrosion performance of experimental pipeline steel. Electrochemical corrosion experiments were carried out on steel without and with 0.0057, 0.0164, and 0.0263 wt.% of Ce in 3.5 wt.% NaCl saturated with CO2 at 20 °C. For comparison purposes, X100 carbon steel specimens machined from an experimental pipe with a yield strength of 731 MPa were tested under the same conditions. The electrochemical techniques employed included: potentiodynamic polarization (PDP), linear polarization resistance (LPR), and electrochemical impedance spectroscopy (EIS). In addition, post-corrosion surface characterization was performed using scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS). The corrosion of base metal without Ce was significantly lower (0.15 mm/y) compared to carbon steel X100 (0.9 mm/yr). The electrochemical results showed that adding Ce accelerates corrosion rates compared to base metal without Ce. No pitting corrosion of tested steel was detected.

Available for download

EFFECT OF MODELING VARIABLES UPON PROJECTION OF CORROSION INDUCED POST-TENSION TENDON FAILURES

Product Number: 51318-10496-SG

Author: William H. Hartt

Publication Date: 2018

$20.00

The present paper reports results of analyses that address the influence of physical and modeling variables upon failure projections.

Individual Conference Papers

Association for Materials Protection and Performance