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Two experimental methods to determining stress-strain behavior of work-hardened surface layers of metallic components
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Advisor(s)
Abstract(s)
Two experimental methods to characterize the mechanical behavior of work-hardened surface layers
of metallic materials, induced by mechanical surface treatments, are described and discussed. The study
was conducted using two steels with different mechanical properties, subjected to a similar shot-peening
treatment. To characterize the elastic–plastic behavior of the surface layers affected by shot-peening,
the X-ray diffraction assisted four-point bending method (XRDABM) and the normalized hardness variation
method (NHVM) were applied. The results were compared and discussed taking into account the advantages
and disadvantages of both methods. Similar yield strength values of the treated surfaces were found
by both proposed methods. Taking into account their measuring characteristics, these can be considered
complementary methods.
Description
Artigo em acesso restrito.
Keywords
Mechanical surface treatments Shot-peening Plasticity Local mechanical properties Micro-hardness X-ray diffraction
Pedagogical Context
Citation
Nobre, Joao P.; Batista, A. C.; Coelho, L.; Dias, A.M. Two experimental methods to determining stress-strain behavior of work-hardened surface layers of metallic components, Journal of Materials Processing Technology, 210, 2285-2291, 2010.