Anomalous ultrasonic attenuation in ferritic steels at elevated temperatures

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DOIResolve DOI: http://doi.org/10.1016/j.ultras.2016.03.005
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TypeArticle
Journal titleUltrasonics
ISSN0041-624X
Volume69
Pages268272
SubjectSteel; Laser-ultrasonics; Attenuation; Anisotropy; Phase transformation
AbstractAn unexpected peak in attenuation has been observed at ∼800 °C when heating low carbon steels in a laser-ultrasonic instrument. An explanation is given in terms of enhanced crystalline anisotropy with increasing temperature in the bcc ferrite range combined with subsequent transformation to austenite at still higher temperatures. An analysis based on theoretical models of attenuation in the Rayleigh regime is in good agreement with the experimental observations.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS0041624X16000482
NPARC number23000053
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Record identifier9ef4261f-2525-4af7-a1cc-269629ae0379
Record created2016-06-01
Record modified2016-06-01
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