Texture Evolution in Biocompatible Mg-Y-Re Alloy After Friction Stir Processing

Abstract

The presented study deals with the investigation of biocompatible WE 43 Mg-based alloy processed via the combination of rotary swaging (RS) and friction stir processing (FSP) at three different rotational speeds of 400 RPM, 800 RPM, and 1200 RPM. The structure observations primarily focused on texture development and characterizations of grain sizes and grain boundaries. The results showed that swaging plus processing at 400 RPM and 1200 RPM lead to substantial recrystallization and grain refinement. The fractions of low angle grain boundaries within the 400 RPM and 1200 RPM samples were approximately 11%, while for the 800 RPM sample exhibiting secondary recrystallization it was about 22%. The grains were also the finest in the 1200 RPM sample (average grain diameter of 1.8 µm). The processed structures exhibited a slight tendency to form the {10-10} <0001> preferential fiber texture (especially the 800 RPM sample). Tensile testing showed the FSP to have positive influence on the ultimate tensile stress, as well as ductility of all the samples; the mechanical properties improved with increasing FSP rate.

The development of magnesium‐based biomaterials in bone tissue engineering: A review

“…The addition of REEs significantly contributes to the corrosion and mechanical properties of the REEs-containing Mg alloys and is common in alloys in various applications. 89 The alloying addition of REEs is extensively used to modify the Mg-based alloy structure. These dominant alloying additions include Sc and Y, along with the 15 lanthanides: La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, which may further be divided into the light RREs or heavy RREs.…”

“…Due to the low galvanic potential of Mg, the alloying additions must avoid the tendency toward forming intermetallic phases with substantially higher galvanic potentials, which leads to accelerated cathodic kinetics. The addition of REEs significantly contributes to the corrosion and mechanical properties of the REEs‐containing Mg alloys and is common in alloys in various applications 89 . The alloying addition of REEs is extensively used to modify the Mg‐based alloy structure.…”

Review on Friction Stir Processed TIG and Friction Stir Welded Dissimilar Alloy Joints

“…Furthermore, TEM examinations revealed that the coarse Mg 2 Si precipitates in the as-cast A356 sample disappeared after FSP, indicating the dissolution of most of the Mg 2 Si precipitates during FSP. FSP was found to be generally beneficial for dissolution of precipitates and structure homogenization [59].…”

Decade of Twist Channel Angular Pressing: A Review

“…Although numerous SPD processes have been introduced, not all the existing methods can be listed here owing to the continuing research in this field. However, the examples are high pressure sliding [14], high pressure tube twisting [15], friction stir processing [16], equal channel angular drawing [17], ECAP-partial back pressure [18], accumulative back extrusion [19], accumulative roll bonding [20], accumulative spin bonding [21], constrained groove pressing [22], constrained studded pressing [23], parallel tubular channel angular pressing [24], tube channel pressing [25], elliptical cross-section spiral equal-channel extrusion [26], C-shape equal channel reciprocating extrusion [27], half channel angular extrusion [28], cyclic extrusion compression [29], cyclic closed die forging [30], cyclic expansion extrusion [31], cyclic extrusion compression angular pressing [32], (variable lead) axi-symmetric forward spiral extrusion [33,34], forward shear normal extrusion [35], rotary extrusion [36], torsion extrusion (TE) [37], twist extrusion (TE) [38], simple shear extrusion [39], continuous shearing [40], continuous confined strip shearing [41], continuous frictional angular extrusion [42], repetitive corrugation straightening [43], severe torsion straining [44], and so on.…”