In this study, we investigated defect detection in dissimilar welded joints by the acoustic emission (AE) method. The study objects were carbide and decarburized interlayers, which are formed at fusion boundary between austenitic pearlitic steels. Diffusion as a structural defect, usually have microscopic dimensions cannot be detected using conventional non-destructive testing (NDT) methods. re...

In this paper an exhaustive scientific work is performed, by means of metallographic and scanning electron microscope (SEM) techniques, the microstructural defects exhibited pearlitic steels their evolution with manufacturing process cold drawing, analyzing consequences such on isotropic/anisotropic fracture behavior different steels. Thus, objective establishment a relation between damage To e...

In this study, the deformation microstructure of hydrogen-charged ferritic-pearlitic 2Mn-0.1C steel was characterized using SEM-BSE, SEM-EBSD, TEM, and neutron diffraction. The microscopic mechanism hydrogen-related quasi-cleavage fracture along {011} planes also discussed. It found that hydrogen increased relative velocity screw dislocations to edge dislocations, leading a tangled dislocation ...

In this work, the effects of micro-alloying Mn, Ni, and Si on microstructure mechanical properties high-carbon pearlite steels were investigated. The results indicated that addition solely Ni to pearlitic steel can enhance strength through refinement interlamellar spacing, but work-hardening in ferrite colony may be delayed, leading a reduction area. multiple additions increase Mn contents bene...

In this contribution macroscopic modeling of phase transformations and mechanical behavior low alloy steels are developed investigated. Such is importance in simulations transient thermo-mechanical processes which can cause transformations, examples from the railway industry include train braking induced frictional heating as well rail grinding welding operations. We adopt a approach includes t...

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