Texture dependence of uniform elongation for a magnesium alloy

Investigations of microstructural, thermal and local strain phenomena of high speed friction stir processed Mg AZ31

“…Results supporting the above statement were obtained by Chen et al 30) showing a clear increase in tensile ductility due to basal texture weakening. The effect of {10-12} extension twinning on the deformation behavior of magnesium has previously been discussed extensively 31) .…”

Property improvements in fine–grained Mg–Zn–Zr alloy sheets produced by temperature–step–down multi–pass rolling

“…The increment of fracture elongation is primarily attributed to the increased contribution of postenecking elongation and its proportion reached up to~35% finally. As reported in our previous work [5] showed that the, uniform strain in Mg alloys increases as the intensity of basal texture weakens perpendicular to tensile direction in a wider grain sizes of 2.5e12 mm. Additionally, twinning deformation involved in Mg alloys may be not conducive to the development of postenecking elongation and can be well suppressed by fine grains and precipitates [5,27,34].…”

“…Texture modification (often represented by basal texture inclination/ weakening) has been proved to be an effective procedure for improving the workability of magnesium alloys, such as cyclic extrusion and compression (CEC) of 31% (in fracture elongation) in a MgeZneGd alloy [3], and equal channel angular pressing (ECAP) of 45% in AZ31 [4]. Our recent work [5] conducted with a rolled ZK61 Mg alloy also found that uniform elongation is strongly correlated with texture and increases with basal texture weakening. However, such techniques often introduce a large anisotropy in the plane, particularly a marked reduction in strength along the extrusion direction (for instance, yield strength <150 MPa) [3,4,6], and are restricted for industrialized applications.…”

Effects of Different Stretching Routes on Microstructure and Mechanical Properties of AZ31B Magnesium Alloy Sheets

“…Koike and Ohyama [21] reported that tensile elongation was closely related to tilt angle of basal planes from ND. Chen et al [22] reported that the uniform strain was related exclusively to the texture and increased as the basal texture weakened perpendicular to the tensile direction. In this experiment, for all the stretched specimens, there was little difference in the grain size, but an obvious difference in n-value (as shown in Table 1) and basal texture.…”