Coupling of ultrasounds with the Portevin–Le Chatelier serrations as observed in aluminium-magnesium alloy in mini-samples tensile tests
Tomasz Brynk , Krzysztof Kurzydłowski
AbstractThis work presents the first observation of ultrasound and eddy currents coupling with Portevin–Le Chatelier serrations during tensile straining of aluminium-magnesium alloy small-size samples, of a gauge section 5.0 × 0.8 × 0.6 mm3. Significant changes in serration characteristics were detected and quantified using Fast Fourier Transform analyses in the 120–160 MPa stress range under the influence of 2.5 and 5.0 MHz ultrasound, and a 60 kHz eddy current. Digital Image Correlation measurements showed that the change in singular slip bands movement is surprisingly regular all along the sample gauge sections accompanied with a reduction in the serrations' frequency.
|Journal series||Scripta Materialia, [Scripta Metallurgica et Materialia], ISSN 1359-6462, [0036-9748]|
|Publication size in sheets||0.5|
|Keywords in English||Aluminium alloys Portevin–Le Chatelier effect, Dynamic strain ageing, Acoustic methods, Eddy current|
|ASJC Classification||; ;|
|Score||= 140.0, 07-05-2020, ArticleFromJournal|
|Publication indicators||= 0; : 2016 = 1.696; : 2018 = 4.539 (2) - 2018=4.559 (5)|
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