Achieving superior combination of yield strength and ductility in Mg–Mn–Al alloys via ultrafine grain structure

Peng, Peng; Tang, Aitao; Wang, Bo; Zhou, Shining; She, Jia; Zhang, Jianyue; Pan, Fusheng

doi:10.1016/j.jmrt.2021.08.133

Cited by 32 publications

(5 citation statements)

References 59 publications

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“…A high concentration of calcium in Mg-Ca alloys (5 wt.%, 10 wt.%, and 20 wt.% of Ca) displayed brittle behavior [125]. By reducing the concentration of Ca in Mg alloy, the mechanical characteristics and corrosion behavior of the Mg-Ca alloy were observed to be improved [125][126][127][128][129][130][131]. For as-cast Mg-Ca alloy samples, the UTS, YS, and elongation reduced as the Ca concentration increased [131].…”

Section: Mg-ca Alloymentioning

confidence: 99%

Significance of Alloying Elements on the Mechanical Characteristics of Mg-Based Materials for Biomedical Applications

et al. 2022

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Magnesium alloys are widely employed in various applications due to their high strength-to-weight ratio and superior mechanical properties as compared to unalloyed Magnesium. Alloying is considered an important way to enhance the strength of the metal matrix composite but it significantly influences the damping property of pure magnesium, while controlling the rate of corrosion for Mg-based material remains critical in the biological environment. Therefore, it is essential to reinforce the magnesium alloy with a suitable alloying element that improves the mechanical characteristics and resistance to corrosion of Mg-based material. Biocompatibility, biodegradability, lower stress shielding effect, bio-activeness, and non-toxicity are the important parameters for biomedical applications other than mechanical and corrosion properties. The development of various surface modifications is also considered a suitable approach to control the degradation rate of Mg-based materials, making lightweight Mg-based materials highly suitable for biomedical implants. This review article discusses the various binary and ternary Mg alloys, which are mostly composed of Al, Ca, Zn, Mn, and rare earth (RE) elements as well as various non-toxic elements which are Si, Bi, Ag, Ca, Zr, Zn, Mn, Sr, Li, Sn, etc. The effects of these alloying elements on the microstructure, the mechanical characteristics, and the corrosion properties of Mg-based materials were analyzed. The mechanical and corrosion behavior of Mg-based materials depends upon the percentage of elements and the number of alloying elements used in Mg. The outcomes suggested that ZEK100, WE43, and EW62 (Mg-6% Nd-2% Y-0.5% Zr) alloys are effectively used for biomedical applications, having preferable biodegradable, biocompatible, bioactive implant materials with a lower corrosion rate.

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Section: Mg-ca Alloymentioning

confidence: 99%

Significance of Alloying Elements on the Mechanical Characteristics of Mg-Based Materials for Biomedical Applications

et al. 2022

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“…This improvement is better than that of direct-aging. The strengthening mechanism can be estimated by the Orowan relationship [32]:…”

Section: Strengthening Mechanism Of the γ' Phasementioning

confidence: 99%

Excellent Double-Aging Strengthening Effect with the High Density γ’ Phase of 945A Nickel-Based Alloy

et al. 2022

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The double-aging strengthening effect of the γ’ phase in 945A nickel-based alloy was investigated. The double-aging treatment significantly improved the compressive yield stress. The sample after 8 h aging at 725 °C and 96 h at 800 °C exhibited the highest compressive yield stress of 1007 MPa, which greatly exceeded the original state of 229 MPa. The strengthening mechanism is mainly attributed to the Orowan strengthening mechanism. After double-aging treatment, high density γ’ phase precipitate was formed, which effectively improves the strength. The precipitate behavior and the strengthening mechanism of γ’ phase precipitates were clarified in detail.

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“…However, the limited room temperature strength and plasticity, as well as the typical tension-compression asymmetry greatly restricted its applications in industrial fields [4,[10][11][12]. Therefore, the thermal deformation processes, such as rolling, extrusion, and equal channel angular processing were generally used to improve its mechanical properties [5,[13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy

Ma,

Chen

et al. 2023

Mater. Res. Express

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ZK60 magnesium alloy was prepared by the hot-pressed sintering combined with the hot-extruded technique. The microstructure and mechanical properties evolution of ZK60 alloy with a reduced extrusion temperature from 350 °C to 250 °C were investigated in detailed. The extruded alloy was mainly composed of fine α-Mg grains and MgZn2 phase. The grains size gradually decreased with a reduction in extrusion temperature, and the yield strength obviously increased accordingly. The alloy extruded at 250 °C exhibited the smallest average grain size of 2.5 μm and the best combination of strength and plasticity, with a yield strength of 279 MPa and fracture strain of 18.1% in compressive condition, and 263 MPa and 13.7% in tensile condition, as well as a tension-compression yield asymmetry of 0.94. Both the fine grains formed by the continuous and twin induced dynamic crystallization mechanism and the precipitation strengthening contributed to the strength improvement.

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Achieving superior combination of yield strength and ductility in Mg–Mn–Al alloys via ultrafine grain structure

Cited by 32 publications

References 59 publications

Significance of Alloying Elements on the Mechanical Characteristics of Mg-Based Materials for Biomedical Applications

Significance of Alloying Elements on the Mechanical Characteristics of Mg-Based Materials for Biomedical Applications

Excellent Double-Aging Strengthening Effect with the High Density γ’ Phase of 945A Nickel-Based Alloy

Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy

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