skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Simulating hydrogen embrittlement and fast pathways for diffusion.

Abstract

Abstract not provided.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1390743
Report Number(s):
SAND2016-8841C
647245
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the 2016 International Hydrogen Conference, Material Performance in Hydrogen Environments held September 11-14, 2016 in Moran, WY.
Country of Publication:
United States
Language:
English

Citation Formats

Foulk, James W.,, de Frias, Gabriel Jose, Ostien, Jakob, Mota, Alejandro, Sun, WaiChing, Bergel, Guy, Wolfer, Bill, San Marchi, Christopher W., and Somerday, Brian. Simulating hydrogen embrittlement and fast pathways for diffusion.. United States: N. p., 2016. Web.
Foulk, James W.,, de Frias, Gabriel Jose, Ostien, Jakob, Mota, Alejandro, Sun, WaiChing, Bergel, Guy, Wolfer, Bill, San Marchi, Christopher W., & Somerday, Brian. Simulating hydrogen embrittlement and fast pathways for diffusion.. United States.
Foulk, James W.,, de Frias, Gabriel Jose, Ostien, Jakob, Mota, Alejandro, Sun, WaiChing, Bergel, Guy, Wolfer, Bill, San Marchi, Christopher W., and Somerday, Brian. 2016. "Simulating hydrogen embrittlement and fast pathways for diffusion.". United States. doi:. https://www.osti.gov/servlets/purl/1390743.
@article{osti_1390743,
title = {Simulating hydrogen embrittlement and fast pathways for diffusion.},
author = {Foulk, James W., and de Frias, Gabriel Jose and Ostien, Jakob and Mota, Alejandro and Sun, WaiChing and Bergel, Guy and Wolfer, Bill and San Marchi, Christopher W. and Somerday, Brian},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 9
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Abstract not provided.
  • Abstract not provided.
  • Abstract not provided.
  • The challenges in characterizing susceptibility of corrosion resistant alloys (CRAS) to hydrogen embrittlement in service are highlighted using experimental data for duplex stainless steels (DSSS) in two major industrial applications: in oil production environments downhole, where galvanic coupling to carbon steel can cause hydrogen uptake, and in subsea pipelines where cathodic protection provides the source of hydrogen atoms. The influence of environment composition, charging current, pre-exposure, time, temperature, temperature excursions, and mechanical test method is examined. For constant temperature conditions, pre-exposure may have no major impact on embrittlement of DSSS because hydrogen ingress via regions of mechanically ruptured oxide filmmore » is dominant, unless there are internal microstructural regions or defects of high susceptibility. Pre-exposure maybe more significant when excursions from high to low temperature occur. The application of interrupted slow strain rate testing to determination of the threshold strain to cracking of a DSS indicates a need for testing at very low strain rates. The time-consuming nature of this testing may inhibit its extended utilization but without such data there is a measure of uncertainty in materials selection with respect to the degree of risk and the tolerance to service excursions.« less
  • The impact of restricted mass transport on the thermal processing of coal is being explored through the study of organic model compounds that are covalently anchored to an inert silica surface. Two-component surfaces are being prepared and pyrolyzed at 375{degrees}C that contain a thermally reactive component (Ph(CH{sub 2}){sub n}Ph, n=2--4) in the presence of a second component that is either thermally inert (biphenyl or naphthalene) or contains reactive C-H bonds (diphenylmethane (DPM) or 9,10-dihydrophenanthrene (DHP)). Reactions are found to be highly sensitive to the spatial distribution of hydrogen donors and nondonors that surround immobilized free-radical intermediates. In the presence ofmore » DPM or DHP, rapid serial hydrogen transfer steps allow radical intermediates to migrate across the surface overcoming normal diffusional limitations. Studies with DHP also reveal a minor reaction channel in which strong bond cleavage reactions occur via hydrogen transfer in these diffusionally constrained environments.« less