Correlação entre os ensaios de esclerometria pendular e método charpy para aços SAE 1080
More and more practicality and speed in material analysis processes are sought. One of the techniques to quantify the toughness of metallic samples is the Charpy method. However, the application of pendulum scratching test analyses to obtain properties such as toughness and dynamic hardness can b...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/53028 |
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| Resumo: | More and more practicality and speed in material analysis processes are sought.
One of the techniques to quantify the toughness of metallic samples is the Charpy
method. However, the application of pendulum scratching test analyses to obtain
properties such as toughness and dynamic hardness can be promising, due to its
fast execution and low cost. Furthermore, it is expected to be a more suitable
alternative for indirectly measuring the impact toughness of thin metal sheets, which
are difficult to measure using the Charpy method. In addition to factors that hinder
the use of the Charpy method, such as the plastic behavior of the material, the
required standardized thicknesses and the time spent related to the manufacture of
samples. Thus, the objective is to seek for a correlation between the two techniques
in the characterization of SAE 1080 carbon steel samples. This material was chosen
due to the ease of obtaining samples with homogeneous microstructures, through
isothermal treatments. A comparison was made between the Charpy method and
the pendulum hammer method, including the preparation of the specimens for both
equipment, isothermal treatments and the analysis of the energies obtained in the
tests. By comparing the results, one can look for a strong correlation between both
measured properties. The pendulum scratching test provided results that showed a
strong correlation with the results of Charpy tests performed on the samples, with
correlation coefficients and Pearson's determination of approximately 0.98 and
0.97, respectively. Such a correlation between significantly different properties
encourages further studies that may not only explain the mechanisms involved, but
also expand knowledge about the mechanical properties of materials. |
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