Nanoindentation study of corrosion-induced grain boundary degradation in a pipeline steel Bastawros, Ashraf Shrotriya, Pranav Yavas, Denizhan Mishra, Pratyush Alshehri, Abdullah Shrotriya, Pranav Hebert, Kurt Bastawros, Ashraf Hebert, Kurt R
dc.contributor.department Aerospace Engineering
dc.contributor.department Mechanical Engineering
dc.contributor.department Materials Science and Engineering
dc.contributor.department Chemical and Biological Engineering 2018-02-07T16:41:05.000 2020-06-29T22:45:16Z 2020-06-29T22:45:16Z Mon Jan 01 00:00:00 UTC 2018 2018-02-02 2018-03-01
dc.description.abstract <p>High-strength low-alloy steels used for oil and gas pipelines are vulnerable to intergranular stress corrosion cracking in moderately alkaline soils. The mechanism of corrosion-induced embrittlement under such conditions is not yet understood. Nanoindentation was used to detect localized degradation of mechanical properties near internal grain boundaries of X-70 steel undergoing intergranular corrosion at active dissolution potentials at pH 8.2. The measurements identified a one-micron thick mechanically-degraded layer with 25% reduced hardness near corroded grain boundaries. It is suggested that the corrosion process may introduce an active softening agent, possibly non-equilibrium lattice vacancies generated by oxidation.</p>
dc.description.comments <p>This is a manuscript of an article published as Yavas, Denizhan, Pratyush Mishra, Abdullah Alshehri, Pranav Shrotriya, Kurt R. Hebert, and Ashraf F. Bastawros. "Nanoindentation study of corrosion-induced grain boundary degradation in a pipeline steel." <em>Electrochemistry Communications</em> 88 (2018): 88-92. doi: <a href="" target="_blank">10.1016/j.elecom.2018.02.001</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1109
dc.identifier.contextkey 11496408
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath aere_pubs/108
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 18:28:31 UTC 2022
dc.source.uri 10.1016/j.elecom.2018.02.001
dc.subject.disciplines Aerodynamics and Fluid Mechanics
dc.subject.disciplines Aerospace Engineering
dc.subject.disciplines Nanoscience and Nanotechnology
dc.subject.disciplines Structures and Materials
dc.subject.keywords Intergranular corrosion
dc.subject.keywords Dissolution-induced degradation
dc.subject.keywords Stress corrosion cracking
dc.subject.keywords Grain boundary softening
dc.subject.keywords Nanoindentation
dc.title Nanoindentation study of corrosion-induced grain boundary degradation in a pipeline steel
dc.type article
dc.type.genre article
dspace.entity.type Publication
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