Effect of compression conditions on the microstructure and texture of a Mg–RE alloy

Wu, Yiping; Zhang, X.M.; Deng, Ying; Tang, Changping; Zhong, Y.Y.

doi:10.1016/j.msea.2015.07.064

Cited by 15 publications

(7 citation statements)

References 24 publications

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“…Some insoluble particles can be observed, most of which are distributed along the grain boundaries (GB); only a few exist on the matrix. Similar results were reported in Ref [43][44][45]; with the addition of RE elements as Gd or Y, the segregation of particles will exhibit a tendency towards grain boundaries due to the large atomic size misfit with Mg and high bulk solubility. After a single pass of RD-ECAP, the grains were significantly elongated and oriented towards the ED due to the shear deformation at the junction of the channel (Figure 2c,d).…”

Section: Microstructure Evolutionsupporting

confidence: 87%

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

et al. 2022

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In this study, the effect of rotary-die equal-channel angular pressing (RD-ECAP) on the microstructure and texture evolution of GW103 alloy is studied. RD-ECAP processes were carried out for 1, 4 and 12 passes at 450 °C. The mechanical properties and friction behavior of RD-ECAP-processed Mg-10Gd-3Y (wt%) alloy (GW103) are discussed. The results reveal that the size of dynamic recrystallized grains and second-phase particles are significantly refined to about 1.3 μm and 1 μm, respectively. The texture evolution of the processed samples is studied by X-ray diffraction and electron backscattered diffraction techniques. The multiple texture components formed are not observed after the conventional ECAP process. Moreover, different dynamic recrystallization (DRX) mechanisms are systemically analyzed and discussed in view of the texture evolution of ECAP processed samples. The final textures obtained after 12 passes are identified as two types: The C-texture type induced by continuous and discontinuous DRX, and the random texture components induced by reorientation of the initial <101¯0> fiber. Based on the grain refinement, precipitate strengthening and texture weakening mechanisms, a high-performance ternary alloy of Mg-Gd-Y was firstly obtained through 12 passes RD-ECAP processing, with a combination of high yield strength of 312 MPa and a high ductility of 22%. In addition, the friction behaviors are also studied. The multi-pass-processed samples exhibit a relatively lower friction coefficient under a load of 10 N at room temperature.

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Section: Microstructure Evolutionsupporting

confidence: 87%

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

et al. 2022

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“…8. The (0001) plane of the magnesium alloy was perpendicular to the compression axis direction [19], and the (0001) plane after extrusion was parallel to the extrusion axis direction [20]. However, after 1 pass of RUE, the (0001) basal plane of some grains was parallel to the direction of extrusion direction (ED), while the basal plane of other grains was perpendicular to the ED, and texture intensity was 10.72 (Fig.…”

Section: Resultsmentioning

confidence: 98%

Microstructure, Texture and Mechanical Properties of Mg-Gd-Y-Zn-Zr Alloy during Repetitive Upsetting-Extrusion after Heat Treatment

Meng

Zhang

et al. 2020

MSF

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Severe plastic deformation can be produced by repetitive upsetting-extrusion process. Using the repetitive upsetting-extrusion (RUE) process at decreasing temperature, the Mg-12.0Gd-4.5Y-2.0Zn-0.4Zr (wt %) alloy was deformed by different RUE passes and then heat treated. The microstructure, texture and mechanical properties of the alloy were compared and analyzed. The results demonstrate that with the increase of deformation passes, the coarse grains of the alloy decreased, the dynamic recrystallization fraction increased, and the dynamic recrystallized grains phagocytized the original grains. This can promote the continuous refinement of the grains and the microstructure uniformity. The maximum texture intensity of the (0001) basal plane decreased significantly with the increase of processing passes and the dispersion degree of pole figure increased. The orientation of dynamic recrystallized grains was randomly distributed to weaken texture. Due to the refinement of microstructure and the weakening of texture, the tensile strength and yield strength of the alloy obviously increased at room temperature. The mechanical properties of the alloy reached the highest after 3 passes and heat treatment.

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“…Tensile and compressive yield strengths of the WE43 alloy were much more similar, which indicates the suppression of the texture for this material. It is known that rare earth elements should suppress forming of the basal texture or substitutes it for less anisotropic RE texture [24]. Alloy WE43 showed the best overall mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

AZ31 and WE43 Alloys for Biomedical Applications

Dvorský

Kubásek

Vojtěch

2017

SSP

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Magnesium and its alloys are considered for application as materials for biodegradable implants as they have mechanical properties similar to bone tissue. High demands on corrosion and mechanical properties are made on these alloys. While mechanical properties of magnesium are usually enhanced by alloying, corrosion properties may deteriorate. This paper is focused on the comparison of magnesium alloys AZ31 (3 wt. % Al, 1 wt. % Zn) and WE43 (4 wt. % Y, 3 wt. % Nd) which are considered for biomedical applications. Besides the type of alloying elements, the preparation process has also great impact on final mechanical and corrosion properties. Alloying elements may be dissolved in magnesium matrix or they can form intermetallic phases, which alter final properties. Microstructure, mechanical and corrosion properties of AZ31 and WE43 were studied and compared with pure magnesium.

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Effect of compression conditions on the microstructure and texture of a Mg–RE alloy

Cited by 15 publications

References 24 publications

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

The Effect of Rotary-Die Equal-Channel Angular Pressing Process on the Microstructure, the Mechanical and Friction Properties of GW103 Alloy

Microstructure, Texture and Mechanical Properties of Mg-Gd-Y-Zn-Zr Alloy during Repetitive Upsetting-Extrusion after Heat Treatment

AZ31 and WE43 Alloys for Biomedical Applications

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