Abstract

The article presents a study of behaviour of multilayered steel materials in conditions of alternating symmetrical bending when heavy stress is applied at low-cycle fatigue conditions with the use of bending unbending test. The study showed different behaviour pattern when applying stress to two compositions of multilayered steel materials – W108+AISI 304 and W108+AISI 430. The fractographic analysis of fatigue rupture surfaces was used to explain the results obtained in studying the number of cycles prior to fracture, which showed that the mode of failure of the two compositions of multilayered steel materials was different.

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