Deformation behavior of Mg-alloy-based composites at different temperatures studied by neutron diffraction

Farkas, Gergely; Máthis, Kristián; Pilch, Ján; Minárik, Peter; Lukáš, P.; Vinogradov, Alexei

doi:10.1016/j.msea.2017.01.010

Cited by 11 publications

(4 citation statements)

References 32 publications

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“…The described difference in internal strain has an impact on active deformation mechanisms. The high internal strain in the grains leads to increased stress values for slip activation (Farkas et al, 2017), i.e., high yield stress can be reached as in case of S85 alloy.…”

Section: Discussionmentioning

confidence: 99%

In-situ Investigation of the Microstructure Evolution in Long-Period-Stacking-Ordered (LPSO) Magnesium Alloys as a Function of the Temperature

et al. 2019

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Deformation behavior of two Mg-Zn-Y magnesium alloys, having a different fraction of the long-period-stacking-ordered (LPSO) phase, has been investigated at room temperature and 200 • C by a combination of in-situ neutron diffraction (ND) and acoustic emission (AE) measurements. The results indicate that the twinning in the magnesium matrix and the kinking in the LPSO phase strongly depend on the composition of the material and the testing temperature. Further, active deformation mechanisms and particularly the load transfer from the magnesium matrix to the LPSO phase define the mechanical properties of the investigated alloys.

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Section: Discussionmentioning

confidence: 99%

In-situ Investigation of the Microstructure Evolution in Long-Period-Stacking-Ordered (LPSO) Magnesium Alloys as a Function of the Temperature

et al. 2019

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“…It was measured previously with in-situ ND that large tensile strain is present in the matrix, which suppresses the twinning. The tensile strain reduces at elevated temperature making smaller influence on twinning [9]. Thus, twinning becomes more dominant and this process increases the activity of AE.…”

Section: Acoustic Emission At Elevated Temperaturementioning

confidence: 99%

“…This difference can be explained with the presence of fibers. The delayed activation of twinning on macroscopic scale in sample with P aO can be explained by the high LS in the matrix in axial direction [9]. The applied compressive load has to first compensate the tensile LS.…”

Section: Twinning In Mg Compositesmentioning

confidence: 99%

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Deformation Behavior of Mg-alloy-based Composites at Different Temperatures Studied by Neutron Diffraction

et al. 2018

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Deformation mechanisms in a Mg-Al-Ca alloy reinforced with short alumina fibres were studied by acoustic emission and neutron diffraction method (ND). The microstructure after deformation was observed by electron microscope (SEM). The fibres plane orientation with respect to the loading axis was found to be a key parameter, which influences the active deformation processes, such as twinning and dislocation slip. In-situ neutron diffraction tests were performed at room temperature (RT) and 100 • C. The relative twin volume in the matrix as a function of the applied compressive load were evaluated from the ND tests. Acoustic emission results indicate a larger twinning activity and more frequent fibre cracking in sample with perpendicular fibre plane orientation. Both of these mechanisms increase in magnitude at 100 • C.

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Temperature dependent compressive yield strength model for short fiber reinforced magnesium alloy matrix composites

Shao

Wang

et al. 2018

J Mater Sci

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Deformation behavior of Mg-alloy-based composites at different temperatures studied by neutron diffraction

Cited by 11 publications

References 32 publications

In-situ Investigation of the Microstructure Evolution in Long-Period-Stacking-Ordered (LPSO) Magnesium Alloys as a Function of the Temperature

In-situ Investigation of the Microstructure Evolution in Long-Period-Stacking-Ordered (LPSO) Magnesium Alloys as a Function of the Temperature

Deformation Behavior of Mg-alloy-based Composites at Different Temperatures Studied by Neutron Diffraction

Temperature dependent compressive yield strength model for short fiber reinforced magnesium alloy matrix composites

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