Microstructure, hot deformation behavior, and textural evolution of Mg–3wt%Zn–1wt%Ca–0.5wt%Sr Alloy

Liu, Hening; Li, Yongjun; Zhang, Kui; Li, Xinggang; Ma, Minglong; Shi, Guoliang; Yuan, Jiawei; Wang, Kaikun

doi:10.1007/s10853-020-04817-x

Cited by 12 publications

(4 citation statements)

References 36 publications

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“…In addition, adding Sr to Mg alloys can refine 𝛼-Mg grains, improve the formability of Mg alloys, and increase their mechanical properties at room temperature (RT), along with high temperature and corrosion resistance. [29] Therefore, as a biomaterial for internal orthopedic fixation, an appropriate amount of Sr can be added to Mg alloys to improve mechanical properties and corrosion resistance, promoting bone growth and healing. Zirconium (Zr) was also reported to have good biocompatibility with no in vitro toxicity, mutagenicity, or carcinogenicity.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Properties, Corrosion Resistance, Cytocompatibility, Osteogenesis, and Antibacterial Performance of Biodegradable Mg–2Zn–0.5Ca–0.5Sr/Zr Alloys for Bone‐Implant Application

Tong,

Dong,

Zhou

et al. 2024

Adv Healthcare Materials

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Magnesium (Mg) alloys have been widely used in bone fixation, bone repair, and cardiovascular stents as biodegradable bone‐implant materials. However, their clinical application is limited due to their fast corrosion rate and poor mechanical stability. Here we report the development of Mg‐2Zn‐0.5Ca‐0.5Sr (MZCS) and Mg‐2Zn‐0.5Ca‐0.5Zr (MZCZ) alloys with improved mechanical properties, corrosion resistance, cytocompatibility, osteogenesis performance, and antibacterial capability for biodegradable bone‐implant applications. The hot‐extruded (HE) MZCZ sample exhibited the highest ultimate tensile strength of 255.8±2.4 MPa and the highest yield strength of 208.4±2.8 MPa among all alloy samples and an elongation of 15.7±0.5% due to the recrystallization and grain‐refining effect of Zr. The HE MZCS sample showed the highest corrosion resistance among all samples, with the lowest corrosion current density of 0.2±0.1 μA/cm2 and lowest corrosion rate of 4±2 μm/y obtained from electrochemical testing, and a degradation rate of 368 μm/y and hydrogen (H2) evolution rate of 0.83±0.03 mL/cm2/d obtained from immersion testing for 21 d in Hanks’ solution. The MZCZ sample showed the highest cell viability in relation to MC3T3‐E1 cells among all alloy extracts, indicating good cytocompatibility except at 25% concentration. Furthermore, the MZCZ alloy showed good antibacterial capability against S. aureus.This article is protected by copyright. All rights reserved

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Section: Introductionmentioning

confidence: 99%

Enhanced Mechanical Properties, Corrosion Resistance, Cytocompatibility, Osteogenesis, and Antibacterial Performance of Biodegradable Mg–2Zn–0.5Ca–0.5Sr/Zr Alloys for Bone‐Implant Application

Tong,

Dong,

Zhou

et al. 2024

Adv Healthcare Materials

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“…Fortunately, as the temperature increases, the workability of Mg alloys will be improved greatly owing to the activation of non-basal slip [12] and grain boundary slip [13]. Nowadays, many studies have been performed to investigate the hot deformation behavior of Mg-Zn-X alloy [14][15][16][17][18][19][20][21]. Liu et al [17] calculated the activation energy of the casted Mg-3Zn-Ca-0.5Sr alloy (250.44 kJ/mol) and drew the processing map with a peak power dissipation efficiency of 42%, which was observed at 603-633 K and 0.005-0.03 s −1 .…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, many studies have been performed to investigate the hot deformation behavior of Mg-Zn-X alloy [14][15][16][17][18][19][20][21]. Liu et al [17] calculated the activation energy of the casted Mg-3Zn-Ca-0.5Sr alloy (250.44 kJ/mol) and drew the processing map with a peak power dissipation efficiency of 42%, which was observed at 603-633 K and 0.005-0.03 s −1 . Gao et al [18] researched the stress-strain curves of the Mg-2.3Zn-0.4Mn-0.2Ce alloy and concluded that the alloy exhibited a typical dynamic recrystallization (DRX) behavior with a single peak stress.…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior and Constitutive Analysis of As-Extruded Mg–6Zn–5Ca–3Ce Alloy Fabricated by Rapid Solidification

Bao

Zhou

Shi

et al. 2021

Metals

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The plasticity of Mg–6Zn–5Ca–3Ce alloy fabricated by rapid solidification (RS) at room temperature is poor due to its hexagonal-close-packed (HCP) structure. Therefore, hot deformation of RS Mg–6Zn–5Ca–3Ce alloy at elevated temperature would be a major benefit for manufacturing products with complex shapes. In the present study, hot deformation behavior of as-extruded Mg–6Zn–5Ca–3Ce alloy fabricated by RS was investigated by an isothermal compression test at a temperature (T) of 573–673 K and strain rate (ε˙) of 0.0001–0.01 s−1. Results indicated that the flow stress increases along with the declining temperature and the rising strain rate. The flow stress behavior was then depicted by the hyperbolic sine constitutive equation where the value of activation energy (Q) was calculated to be 186.3 kJ/mol. This issue is mainly attributed to the existence of fine grain and numerous second phases, such as Mg2Ca and Mg–Zn–Ce phase (T’ phase), acting as barriers to restrict dislocation motion effectively. Furthermore, strain compensation was introduced to incorporate the effect of plastic strain on material constants (α,Q,n,lnA) and the predicted flow stresses under various conditions were roughly consistent with the experimental results. Moreover, the processing maps based on the Murty criterion were constructed and visualized to find out the optimal deformation conditions during hot working. The preferential hot deformation windows were identified as follows: T = 590–640 K, ε˙ = 0.0001–0.0003 s−1 and T = 650–670 K, ε˙ = 0.0003–0.004 s−1 for the studied material.

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“…As an important structural material, magnesium (Mg) possesses many excellent properties, such as low density, good electromagnetic shielding, and abundant reserves, but its plasticity at room temperature is poor [1,2]. Alloying can effectively improve its plasticity.…”

Section: Introductionmentioning

confidence: 99%

Effect of Microstructure on Layered Double Hydroxides Film Growth on Mg-2Zn-xMn Alloy

Chen

Yao

et al. 2021

Coatings

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The poor corrosion resistance of magnesium (Mg) alloys significantly restricts their wide applications. The preparation of a layered double hydroxides (LDHs) film can provide effective corrosion protection for Mg alloys. Nevertheless, research on the effect of the Mg alloy microstructure on LDHs film growth is paid less attention, which was studied in detail in this work. Herein, a Mg-2Zn-xMn alloy with different Mn contents was produced, and an LDHs film was then synthesized on their surfaces. The addition of Mn causes a different microstructure in the Mg-2Zn-xMn alloy, which is gradually refined with increasing Mn content, further affecting the surface morphology, surface chemistry, and corrosion protection of the LDHs film. When the Mn content is 1 wt.% (x = 1), the LDHs film presents the best corrosion protection, with the lowest corrosion current density. No obvious corrosion product could be observed by the naked eyes on the surface. By contrast, severe corrosion occurs on the Mg-2Zn-0Mn alloy (x = 0). Finally, the LDHs film growth mechanism was proposed.

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Microstructure, hot deformation behavior, and textural evolution of Mg–3wt%Zn–1wt%Ca–0.5wt%Sr Alloy

Cited by 12 publications

References 36 publications

Enhanced Mechanical Properties, Corrosion Resistance, Cytocompatibility, Osteogenesis, and Antibacterial Performance of Biodegradable Mg–2Zn–0.5Ca–0.5Sr/Zr Alloys for Bone‐Implant Application

Enhanced Mechanical Properties, Corrosion Resistance, Cytocompatibility, Osteogenesis, and Antibacterial Performance of Biodegradable Mg–2Zn–0.5Ca–0.5Sr/Zr Alloys for Bone‐Implant Application

Hot Deformation Behavior and Constitutive Analysis of As-Extruded Mg–6Zn–5Ca–3Ce Alloy Fabricated by Rapid Solidification

Effect of Microstructure on Layered Double Hydroxides Film Growth on Mg-2Zn-xMn Alloy

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