Influence of cerium on the texture and ductility of magnesium extrusions

Prediction of the True Stress of ZE20 Magnesium Alloy at Different Temperatures and Strain Rates

“…The input parameters and the total data used for the developed GEP models were the same as the ones used in the Fitness function error type RRSE P 3 Number of the genes 3 P 4 Head size 7 P 5 Linking function + Transposition rate 0.1…”

“…Li et al [2] performed compression tests to determine a basic relationship for a wrought magnesium alloy with a wide range of strain rates; the results showed that the flow curve reaches a steady state at low strain values. Mishra et al [3] encountered an abnormal change in the behaviour of Mg due to the addition of Ce. Luo et al [4] studied high ductility magnesium-zinc-cerium extrusion alloys.…”

In situanalysis of the tensile deformation mechanisms in extruded Mg–1Mn–1Nd (wt%)

“…Most of the automobile parts currently being commercialised are fabricated by die casting, as the formability of wrought Mg alloys is limited due to the strong textures developed during processing. However, magnesium alloys containing rare earth (RE) elements exhibit weak rolling and extrusion textures, which endow them with a more isotropic mechanical behaviour and, therefore, better formability than conventional Mg alloys, such as the magnesium-zinc (AZ) series alloys [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Accordingly, these Mg-RE alloys are very promising light structural materials.…”

“…Several works have attempted to relate the development of weak wrought textures in Mg-RE alloys to the activation of deformation and recrystallisation mechanisms that are different to those of conventional Mg alloys [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. In the latter, it is well known that the critical resolved shear stresses (CRSS) of the various slip and twinning systems vary at room temperature (RT) according to the following sequence: CRSSbasal < CRSS{io 12} twinning < CRSS pr ismatic < CRSS pyramidal .…”

Microstructure, Texture and Mechanical Properties of Mg-Zn-Ce Alloy Extruded at Different Temperatures

“…[5][6][7][8][9][10][11][12][13][14][15] The unique texture such as ''rare earth (RE)'' texture component, 16) corresponding to the h11 2 21i direction parallel to the extrusion direction (ED), is obtained during extruding of Mg-Mn-RE and Mg-RE alloys. [16][17][18][19][20][21][22][23] Recently, Luo et al 24) reported that the RE texture component also appears in an extruded Mg-Zn-Ce alloy, and it exhibits a good balance of tensile yield stress and ductility compared with an extruded Mg-Ce alloy. On the other hand, the origin of the RE texture component appearing in the extruded Mg-Zn-Ce alloy is still unknown.…”