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Picture for 07450 FAILURE ANALYSIS AND INVESTIGATION METHODS FOR BOILER TUBE FAILURES
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07450 FAILURE ANALYSIS AND INVESTIGATION METHODS FOR BOILER TUBE FAILURES

Product Number: 51300-07450-SG
ISBN: 07450 2007 CP
Author: Mehrooz Zamanzadeh, Edward S. Larkin, George T. Bayer, and William J. Linhart
Publication Date: 2007
$20.00

Failure analysis methodology is applied to the principal mechanisms by which boiler tubes fail during service.  sThe failure analysis procedure, or methodology for evaluation, is provided in a step by step approach.  Among the case histories discussed are: fatigue, erosion, short-term overheating, and hydrogen damage.
Picture for 08150 A Case Study: ERW Seam Weld Failure
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08150 A Case Study: ERW Seam Weld Failure

Product Number: 51300-08150-SG
ISBN: 08150 2008 CP
Author: Ming Gao, Sergio Limon, David C. Katz, Ravi M. Krishnamurthy, and Rick Mcnealy
Publication Date: 2008
$20.00

A recent pre-1970 ERW Pipe Seam Weld Failure incident is presented. The investigation combines metallurgical and fractographic analysis, fracture mechanics testing, and failure analysis diagram to determine the origin and nature.
Picture for Relation Between Localized Corrosion And SCC In Nickel Based Alloys In HP/HT Oil And Gas Environment
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51316-7113-Relation Between Localized Corrosion And SCC In Nickel Based Alloys In HP/HT Oil And Gas Environments

Product Number: 51316-7113-SG
ISBN: 7113 2016 CP
Author: Thodla Ramgopal
Publication Date: 2016
$20.00

Fatigue and fracture performance of UNS N07718 (718) and UNS N07716 (625+) in sour environments over a range of temperatures (300 to 400°F) and chloride concentrations (0.15wt% to 25wt% NaCl). Rising displacement fracture toughness test performed in a range of environments.

 
Picture for Effects of nitride precipitation in duplex stainless steel
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51318-10512-Effects of nitride precipitation in duplex stainless steel

Product Number: 51318-10512-SG
Author: Marco De Marco / Marco Palombo / Anthony Pianezze / Abderrahmane Taiche / Valentina Spinelli / Marina Delucchi
Publication Date: 2018
$20.00

The aim of this paper is to find a correlation between nitride content/distribution and properties of two of the largely adopted Duplex Stainless Steel (DSS), UNS* S32205 and UNS S32750. *Unified Numbering System
Picture for Impact of Pitting Corrosion on the Benefit of Shot Peening
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51318-10630-Impact of Pitting Corrosion on the Benefit of Shot Peening

Product Number: 51318-10630-SG
Author: A. Turnbull / S. Zhou
Publication Date: 2018
$20.00

Specimens of 12Cr martensitic stainless were annealed, tempered and shot-peened – then artificially pitted. Through a variety of tests, it was determined that the advantages of shot-peening are mostly retained after pitting.

 
Picture for Fatigue and Static Crack Growth Rate response of C110 under CP using a single specimen methodology
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51318-10963-Fatigue and Static Crack Growth Rate response of C110 under CP using a single specimen methodology

Product Number: 51318-10963-SG
Author: Ramgopal Thodla / Feng Gui / Ashwini Chandra
Publication Date: 2018
$20.00

Subsea flowlines and risers experience fatigue cycles due to thermal and/or pressure transients or vortex induced vibration (VIV). Tests were performed under constant stress intensity factor (K) levels, in a mildly sour environment and in seawater under cathodic protection to understand the difference in the CRG.

 
Picture for Characterization of Direct Metal Laser Sintered Alloy 718 in the As-Fabricated and Heat Treated Condition
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51318-11297-Characterization of Direct Metal Laser Sintered Alloy 718 in the As-Fabricated and Heat Treated Condition

Product Number: 51318-11297-SG
Author: Robert Badrak / Arturo Delacruz / William Howie / Sergey Kolesov
Publication Date: 2018
$20.00

This paper focuses on characterizing Alloy 718 produced via the Direct Metal Laser Sintering (DMLS) process in the as-fabricated and heat treated condition.
Picture for A Corrosion Fatigue (CF) Assessment Method for High-stressed Engine Components in Corrosive Fuels
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A Corrosion Fatigue (CF) Assessment Method for High-stressed Engine Components in Corrosive Fuels

Product Number: 51317--9001-SG
ISBN: 9001 2017 CP
Author: Sven Kaefer
Publication Date: 2017
$20.00

To investigate the corrosive impact of fuels with biogenic components by performing corrosion fatigue tests on notched and un-notched specimen of stainless 17% chromium steel 1.4016 (X6Cr17) AISI430 in air and biofuel E85 ­(fuel with 85% ethanol added).
Picture for A Recent Failure Case Studies on Duplex Stainless Steels in Refinery
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A Recent Failure Case Studies on Duplex Stainless Steels in Refinery

Product Number: 51324-20707-SG
Author: D.S Lee; Y. Ro; S.Y Pae
Publication Date: 2024
$40.00
Duplex stainless steel (DSS) is widely used in the refinery because of its economical combination of strength, corrosion resistance and cost. Various forms of damage may occur to the DSS depending on the concentration of chloride, H2S, water, and temperature. This report presents the analysis results of failure cases occurring in various environments of the SK energy refinery. Operation condition and corrosion environment of each exchanger are described. Analysis results of the cause of damage, inspection method and the results are also explained. This report introduces some failure analysis cases occurred in various environments of the refinery, for example, chloride induced SCC (Cl-SCC) in CDU and SRP process, SSC (Sulfide Stress Crack) in the weldment of air cooler header box, and pitting corrosion in high temperature chloride environments. This study will clearly show the importance of a tube production quality of DSS and the limitation of DSS tube in terms of the surrounding environments such as temperature, Cl and/or H2S contents, and salt formation. Furthermore, the potential problem of a repair welding during manufacturing DSS header box will be presented. We think that the present case studies will help DSS end-users and manufactures improving the understanding of a safe application for DSS.
Picture for AMPP TR21505-2022, Adverse Impacts of Wildfires on Power Industry Steel Structures
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AMPP TR21505-2022, Adverse Impacts of Wildfires on Power Industry Steel Structures

Product Number: AMPP TR21505-2022
Publication Date: 2022
$109.00

The purpose of this report is to communicate the effects of wildfires heat and combustion products on corrosion resistance, material properties, and mechanical integrity of power transmission infrastructure and to identify next steps to research, develop, and implement future asset integrity management actions for the power industry. The report addresses the following general topics.

 

  •       Wildfire vulnerabilities and impacts
  •       Materials effects for steel, coatings, and concrete
  •       Power infrastructure risks and impacts
  •       Asset integrity risk assessment guidance
  •       Recommended industry actions
  •       AMPP activities proposed

 

A wildfire, bushfire, wildland fire or field fire is an unplanned, unwanted, and usually uncontrolled event in an area of combustible vegetation. Due to climate change, many locations in the United States and worldwide, such as Australia and even India, are subject to wildfires due to dry conditions during parts of the year. 
Picture for Effects of Environmental Exposure on Mechanical and Barrier Properties of an Aircraft Coating System
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Effects of Environmental Exposure on Mechanical and Barrier Properties of an Aircraft Coating System

Product Number: 51324-21200-SG
Author: Attilio Arcari; Steven A. Policastro; Rachel M. Anderson; Carlos M. Hangarter; Erick B. Iezzi
Publication Date: 2024
$40.00
Laboratory and outdoor exposure testing can be used to provide controlled or well-characterized environments for understanding how environmental factors alter coating system properties that can be used to understand systems employed on aircraft. Accurate determination of the state of the coating system would help eliminate unnecessary paint removal operations and thereby reduce worker exposure to, and costs associated with, hazardous materials handling arising from paint removal and repainting operations. A commercial aircraft coating system was exposed to laboratory environmental stressors and outdoor exposure on an atmospheric exposure rack to mimic in-service environments. Equivalent circuit parameter values of electrochemical impedance spectroscopy (EIS) data were linked to mechanisms affecting the deterioration of the coating system in response to in-service environmental exposures. Laboratory and outdoor fatigue testing of the coating system and primer coating resulted in cracking of the coating layers. These cracks allowed faster ingress of electrolyte, as seen in EIS measurements, which would shorten the lifespan of the coatings. Area scans using a scanning Kelvin probe instrument were consistent with the EIS interpretation of fatigue degrading the coating barrier properties, while scanning electron microscopy (SEM) images showed an increased linear density of pretreatment cracks in the fatigued coating samples.
Picture for Fatigue and Fracture Resistance of Different Line Pipe Grade Steels in Gaseous H2 Environment
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Fatigue and Fracture Resistance of Different Line Pipe Grade Steels in Gaseous H2 Environment

Product Number: 51324-21101-SG
Author: Milan Agnani; Chris San Marchi; Joseph Ronevich
Publication Date: 2024
$40.00
The existing natural gas (NG) pipeline network is being considered to transport pure gaseous hydrogen (GH2) or blends of NG and GH2 for domestic and industrial energy needs, in an effort to reduce global CO2 emissions. The toughness and ductility of ferritic steels are reduced in the presence of GH2. In order to assess the viability of GH2 gas distribution via NG pipeline networks, it is necessary to understand the fatigue and fracture response of the materials in the network, including the various pipeline steels. Hydrogen-assisted fatigue crack growth (FCG) and fracture behavior of five different modern line pipe grade steels (X52, X70, X80, X100, and X120) were evaluated in high-purity GH2 at pressure of 210 bar, where the tensile strength increases with grade, X120 displaying the highest strength. The X52 and X70 steels feature ferrite with small amounts of pearlite in the microstructure. The X80 steel has a combination of polygonal and acicular ferrite, whereas the X100 and X120 steels contain fine ferritic and bainitic microstructures. The different pipeline steels exhibit similar accelerated FCG rates in the presence of GH2, irrespective of the strength and microstructural constituents. A significant reduction in the fracture resistance is observed for all the steels in GH2 as compared to air, although elastic-plastic fracture (J-R) behavior is maintained in GH2. Contrary to FCG rates, hydrogen-assisted fracture is affected by the microstructure and strength of the steel; higher strength steels exhibit lower fracture resistance and lower tearing modulus, analogous to the generally expected trends in air. Selected fracture surfaces are analyzed to rationalize the influence of microstructure and strength on hydrogen-assisted fracture of this class of steels.
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