Microstructure, texture and mechanical properties of Mg-3.0Zn-0.2Ca alloys fabricated by extrusion at various temperatures

Li, Chengjie; Sun, Hongliang; Li, Xuewen; Zhang, Junling; Fang, Wei; Tan, Zeyi

doi:10.1016/j.jallcom.2015.08.215

Cited by 120 publications

(36 citation statements)

References 33 publications

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“…In this regard, the addition of alloying elements, especially rare‐earth metals, has been shown to be effective . Moreover, the grain refinement by hot working under dynamic recrystallization (DRX) conditions has been used for the enhancement of mechanical properties of Mg alloys …”

Section: Introductionmentioning

confidence: 99%

“…The hot extrusion process has become a promising method, which can be optimized for grain refinement by adjusting extrusion ratio, pressing temperature, and ram speed . Several studies on different types of extrusion process for Mg alloys including the asymmetric extrusion, back extrusion, compound extrusion, lateral extrusion, extrusion with artificial cooling, and extrusion followed by pre‐forging have been reported recently.…”

Section: Introductionmentioning

confidence: 99%

“…Normally, by decreasing hot deformation temperature, under the condition of complete DRX, a finer microstructure will be achieved. Afterward, during room‐temperature tensile testing, this finer microstructure shows a higher strength but lower ductility . Moreover, at low extrusion temperatures, where the DRX is not complete, the presence of inhomogeneous partially recrystallized microstructure has been found to be detrimental to room temperature ductility due to the induced stronger basal texture and higher dislocation density .…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Ductility of a Fine‐Grained Mg–Gd–Al–Zn Magnesium Alloy by Hot Extrusion

et al. 2018

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The grain refinement by dynamic recrystallization (DRX), the enhancement of room-temperature strength and ductility by decreasing hot extrusion temperature, and the effect of grain growth at elevated temperatures are discussed for a newly developed as-cast Mg-Gd-Al-Zn magnesium alloy. The results are supported by fracture surface observations, texture analysis by Schulz reflection method based on X-ray diffraction (XRD), and work-hardening rate plots. It is found that by decreasing the extrusion temperature, the ductility of alloys enhances, which is related to the weakening of basal texture by the rare earth element Gd. Moreover, the grain growth annealing resulted in decreasing the strength and increasing the ductility in the conventional manner, where the texture intensity remained unchanged.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced Ductility of a Fine‐Grained Mg–Gd–Al–Zn Magnesium Alloy by Hot Extrusion

et al. 2018

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“…The mechanical properties, especially for the TYS, are not only prominently influenced by the grain size according to the Hall-Petch formula but also by the textures [44]. As demonstrated in figure 6, the TYS of 1Ag and 2Ag alloy climb so slowly which may result from the texture weakening.…”

Section: Discussionmentioning

confidence: 99%

“…A high extrusion temperature (350 C) is also reasonable since it can perform the DRX process in the twinned areas [35]. It is deemed that the magnesium alloys with refined microstructures and pleasurable grain orientations are expected to have more favorable formability for post-extrusion applications [35,44].…”

Section: Discussionmentioning

confidence: 99%

Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys

Wang

Yuan

et al. 2020

Mater. Res. Express

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In the anastomotic surgery, the currently used degradable magnesium alloys are facing some bottleneck problems such as lower mechanical properties and slower degradation rate. In this study, the novel biodegradable extruded Mg-1Zn-0.2Ca-xAg (x=0, 1, 2, 4) alloys will be developed and the corresponding microstructure, mechanical, and corrosion properties after Ag addition will be investigated. The results indicate that with the Ag addition, the grain size is refined due to fully dynamic recrystallization and Ag 17 Mg 54 phase, an important strengthening phase, begin to be precipitated in the Ag-contained alloys. Due to the stronger solution strengthening and precipitation strengthening, the Mg-1Zn-0.2Ca-4Ag alloy attains the highest ultimate tensile strength among all the alloys. Moreover, Ag element also enhances the electrode potential of the matrix, reduces the susceptibility of pitting corrosion and accelerates the corrosion rate of the alloys by micro-galvanic corrosion between the second phases and the matrix from the analyses of corrosion products and 3D Volta potential map. As a result, 4Ag alloys attain the fastest degradation rate among all the alloys. Combing the mechanical and corrosion results, it can be seen that 4Ag alloys, as novel biodegradable magnesium alloys, can meet the requirement of anastomotic surgery preferably, exhibiting the better application prospects.

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The Effects of Annealing Treatment on Microstructure and Mechanical Properties of the Extruded Mg-1.3Zn-0.5Ca Alloys

Zhang

Hale

et al. 2022

The Minerals, Metals &Amp; Materials Series

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Microstructure, texture and mechanical properties of Mg-3.0Zn-0.2Ca alloys fabricated by extrusion at various temperatures

Cited by 120 publications

References 33 publications

Enhanced Ductility of a Fine‐Grained Mg–Gd–Al–Zn Magnesium Alloy by Hot Extrusion

Enhanced Ductility of a Fine‐Grained Mg–Gd–Al–Zn Magnesium Alloy by Hot Extrusion

Microstructure, mechanical and corrosion properties of novel quaternary biodegradable extruded Mg–1Zn–0.2Ca-xAg alloys

The Effects of Annealing Treatment on Microstructure and Mechanical Properties of the Extruded Mg-1.3Zn-0.5Ca Alloys

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