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        Effect of Alternating Magnetic Field on the Fatigue Behaviour of EN8 Steel and 2014-T6 Aluminium Alloy

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        metals_09_00984_v2.pdf (PDF, 5Mb)
        Author
        Akram, Sufyan
        Babutskyi, Anatolii
        Chrysanthou, Andreas
        Montalvao, Diogo
        Pizurova, Nadezda
        Attention
        2299/21713
        Abstract
        The application of an alternating magnetic field (0.54 T) was observed to lead to an improvement in the fatigue endurance and an increase in Vickers microhardness and tensile strength of both EN8 steel and AA2014-T6 alloy. Fractography using scanning electron microscopy showed evidence of more ductile fracture features after treatment in contrast to untreated samples. The results of X-ray diffraction indicated formation of more compressive residual stresses following treatment; while examination by transmission electron microscopy showed evidence of fewer dislocations. In the case of the AA2014-T6 alloy; Guinier-Preston (GP) zones were also generated by the alternating magnetic field. However; the temperature increase during the treatment was too low to explain these observations. The results were attributed to the non-thermal effect of the alternating magnetic field treatment that led to depinning and movement of dislocations and secondary precipitation of copper.
        Publication date
        2019-09-04
        Published in
        Metals
        Published version
        https://doi.org/10.3390/met9090984
        Other links
        http://hdl.handle.net/2299/21713
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