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Dependence of Fracture Toughness on Rolling Direction in Aluminium 7075 Alloys

100%

İriç S., Ayhan A.

Acta Physica Polonica A

2017

vol. 132

issue 3

892-895

Being a light metallic engineering material with low density, high specific stiffness and strength, aluminium alloys are promising materials in the fields of aerospace, military and automotive industries. Consumption of aluminium alloys in the forms of sheets and plates has generally increased in global markets over the past 45 years. Rolling directions affect the anisotropy and mechanical properties of the aluminium alloys. In this work, the plane strain fracture toughness K_{IC} values of 7075 aluminium alloy were measured in plates of three directions and six orientations (L-T, T-L, T-S, S-T, L-S, S-L), using the standard (ASTM E399) compact tension specimens. The results indicate that dependence of fracture toughness of 7075-T651 aluminium alloy on rolling direction is obvious and that K_{IC} values of T-S and L-T orientations are the highest.

Fractal surface analysis of Zircaloy-4 SEM micrographs using the time-series method

64%

Paun V.

Open Physics

2009

vol. 7

issue 2

264-269

The SEM microfractographies of Zircaloy-4 are studied by the time-series method. We first develop a computer application which associates a time series to each SEM micrograph. Furthermore, we will apply the phase space embedding technique to reconstruct the attractor and to compute the autocorrelation dimension. Using the fractal analysis technique, the SEM microfractographies of the fracture surface of the Zircaloy-4 samples have been analyzed.

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1 Acta Physica Polonica A

1 Open Physics

1 2017

1 2009

1 Ayhan A.

1 Paun V.

1 İriç S.

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Dependence of Fracture Toughness on Rolling Direction in Aluminium 7075 Alloys

Fractal surface analysis of Zircaloy-4 SEM micrographs using the time-series method