Microstructure and damage evolution during tensile loading in a wrought magnesium alloy

Failure of Magnesium Sheets Under Monotonic Loading: 3D Examination of Fracture Mode and Mechanisms

“…Thus, failure loci span by these two quantities might be promising candidates for modelling purposes. A void nucleation model (Horstemeyer and Gokhale 1999) is shown to capture damage progression caused by fracture of intermetallics in extruded AZ61 on a local level (Lugo et al 2011), but its application to structures has not been shown yet. Once elevated temperatures are considered, the failure mechanism changes, and consequently the ductility does.…”

“…Damage initiation could be seen for pores larger than 80 µm in diametre. In (Lugo et al 2011), fracture of coarse (~10 µm in diametre) intermetallic particles has been observed by means of optical microscopy for extruded AZ61 Mg-alloy during tensile loading. Here, we assess a stopped crack in a magnesium alloy that does not contain large particles.…”

Multiaxial effects on LCF behaviour and fatigue failure of AZ31B magnesium extrusion

“…Uniaxial cyclic behaviour of several magnesium alloys has been investigated at both mechanistic [5][6][7][8][9][10][11][12][13][14][15][16][17] and material [18][19][20][21][22][23][24] levels. On the contrary, limited investigations have been conducted to analyse multiaxial cyclic behaviour of magnesium alloys.…”

Microstructure and Mechanical Properties of Aged and Hot Rolled AZ80 Magnesium Alloy Sheets

“…On the contrary, the 240 min pre-aged alloy obtained lower strength and ductility than the 200 min pre-aged alloy did. Lugo et al and Geng and Nie [43,44] point out that the large second phase particles are prone to initiating micro-cracks that are detrimental to the mechanical properties…”

“…On the contrary, the 240 min pre-aged alloy obtained lower strength and ductility than the 200 min pre-aged alloy did. Lugo et al and Geng and Nie [43,44] point out that the large second phase particles are prone to initiating micro-cracks that are detrimental to the mechanical properties of alloys, and so do the particles that decorate the grain boundaries [45]. Hence, the larger amount of second phase particles dominated the fracture mechanism and led to rapture in the early stage of uniaxial tension, resulting in the lower strength and ductility for the 240 min pre-aged AZ80 alloy.…”