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Evaluation of stress-strain behavior of surface treated steels by X-ray diffraction
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Orientador(es)
Resumo(s)
X-ray diffraction assisted four-point bending method (XRDABM) enables to analyze the evolution of surface stress
with the strain during bending of specimens. This experimental methodology was used to characterize the stressstrain
behavior of two plasma nitriding steels, DIN 40 Cr Mn Mo 7 and DIN 32 Cr Mo V 13, with gradients of
mechanical properties across the surface layers, allowing the characterization of the in-depth evolution of the local
yield strength in the nitrided layer. The results show a significantly increase of the yield strength of the nitride
layers and a good agreement between the in-depth evolution of the yield strength and the XRD peak breadth for
the two nitrided steels.
Descrição
Palavras-chave
X-Ray ciffraction Four-point-bending-method Nitrided steels Surface treated layers Stress-strain behavior Yield strength
Contexto Educativo
Citação
Coelho, L.; Batista, A. C.; Nobre, J. P.; Marques, M. J.Evaluation of stress-strain behavior of surface treated steels by X-ray diffraction, Central European Journal of Engineering, 2, 1, 91-95, 2011.