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Twinning Evolution as a Function of Loading Direction in Magnesium

100%

Čapek J., Stráská J., Clausen B., Máthis K.

Acta Physica Polonica A

2015

vol. 128

issue 4

762-764

The twinning activity in random textured cast magnesium during monotonic, room temperature tension and compression tests was monitored by neutron diffraction. Decrease of integrated intensity which characterizes the twinned volume fraction of selected reflections was compared to its Schmid factor. The comparison shows that twinned fraction correlates with the maximum value of the Schmid factor with high precision during tensile test and with the average value of the Schmid factor during compression test.

Effect of Loading Mode on the Evolution of the Dislocation Structure in Magnesium

76%

Máthis K., Gubicza J., Csiszár G., Čapek J., Clausen B., Šíma V., Lukáš P.

Acta Physica Polonica A

2015

vol. 128

issue 4

700-703

The evolution of the dislocation structure in randomly textured cast magnesium as a function of loading mode is studied using whole neutron diffraction pattern line profile analysis and elasto-plastic self-consistent modeling. Both the experimental results and the theoretical data indicate the onset of basal slip at low stresses and the key role of prismatic slip in the macroscopic yield. Dependence of the second-order pyramidal slip on the loading mode is revealed.

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2 Acta Physica Polonica A

2 2015

2 Clausen B.

2 Máthis K.

2 Čapek J.

1 Csiszár G.

1 Gubicza J.

1 Lukáš P.

1 Stráská J.

1 Šíma V.

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Twinning Evolution as a Function of Loading Direction in Magnesium

Effect of Loading Mode on the Evolution of the Dislocation Structure in Magnesium