Plastic deformation on the free surface in the vicinity of the crack in AZ magnesium alloys

• Autorzy: Trojanova Z. , Palcek P. , Chalupova M. , Hlavacova I. , Lukac P.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Of this paper was to study plastic deformation of three magnesium alloys of the AZ series loaded very slowly with the aim to reveal mechanisms of plastic damage and fracture. Design/methodology/approach: Samples of a prismatic shape were provided with the V notch and deformed in the three point bending test. The samples were only slowly loaded and the test was interrupted at the moment when the main crack passed several millimetres. The nearest neighborhood of the crack was studied by means of the light and scanning electron microscopy. Findings: Displays of plastic deformation on the samples free surface and an interaction of deformation bands with twins were found as the main characteristic features. Analysis of the fracture surfaces showed the influence of precipitates on the fracture properties. Research limitations/implications: Experiments were performed only on as cast materials. Practical implications: Technical praxis requires analysing reasons for damage of machine components, machine crashes in the traffic. Knowledge of the deformation and fracture mechanisms may contribute to solve these technical and economy problems. Originality/value: Presented results are original; they were not published and not considered for any publication in the future.

Słowa kluczowe

EN

magnesium alloys; three-point bending; plastic deformation; fracture

PL

stop magnezu; zginanie trzypunktowe; deformacja plastyczna; złamanie

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2015
• Tom: Vol. 71, nr 1
• Strony: 27--35
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Trojanova Z.

• Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Praha 2, Czech Republic

autor

Palcek P.

• Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia

autor

Chalupova M.

• Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia

autor

Hlavacova I.

• Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia

autor

Lukac P.

• Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 5, 121 16 Praha 2, Czech Republic

Bibliografia

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