Plasticity of Mg–Gd alloys between 4 K and 298 K

Grain growth kinetics and annealed texture characteristics of Mg-Sc binary alloys

“…In an effort to overcome these limitations, several alternative processing routes have been explored, the most promising being texture control via alloying additions. The addition of rare-earth (RE) elements has been considered as an effective way to obtain weaker recrystallization texture [4,5,6,7,8,9,10], typically manifested by basal pole splitting and tilting towards the transverse or rolling direction [11,12]. Modification of material texture during annealing can be accomplished by processes such as particle stimulated nucleation (PSN), grain boundary migration, deformation twinning nucleation (DTN) and shear band nucleation (SBN).…”

Strain Localization During Compressive Deformation of Mg-Gd Alloy

“…[16][17][18] Previous works have shown that rolled Mg-RE alloys develop sharp basal texture, which influences the plastic flow attributes when the alloy is deformed in-plane tension and compression. [4,[19][20][21] During tension along rolling direction (RD), plastic deformation occurs predominantly by slip with a small contribution of twinning. On the other hand, RD compression is dominated initially by twinning, followed by slip.…”

“…On the other hand, RD compression is dominated initially by twinning, followed by slip. [4,19,20,22] After sufficiently large compressive deformation, Mg-RE alloys exhibit flow localization in the form of shear bands, which become persistent elements of the microstructure, overtaking significant volume fraction of deformed material. [19] Shear banding has a detrimental influence on the ductility and formability of Mg alloys.…”

“…[4,19,20,22] After sufficiently large compressive deformation, Mg-RE alloys exhibit flow localization in the form of shear bands, which become persistent elements of the microstructure, overtaking significant volume fraction of deformed material. [19] Shear banding has a detrimental influence on the ductility and formability of Mg alloys. [11,12,14] However, the microstructure characteristics and the mechanisms of SBs' formation in deformed Mg-based alloys have not been entirely understood.…”

“…The microstructure evolution during stress plateau and following region of linear increase of the flow stress has been reported by various authors. [4,19,23,24] The stress plateau is associated with nucleation of f10 12gh10 11i twinning, followed by the growth and coalescence of the twin grains. At $ 9 pct of true strain (Figure 1(a)), the whole volume of the sample is transformed into twin orientation.…”