Texture role in the mechanical property improvement contributed by grain refinement for Mg-2.6Nd-0.55Zn-0.5Zr alloy subjected to extrusion process

Chen, Wenzhen; Ma, Junfei; Cui, Chao; Wang, Wenke; Liu, Xintong; Yang, Jianlei; Cui, Guorong

doi:10.1016/j.msea.2021.142185

Cited by 16 publications

(3 citation statements)

References 42 publications

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“…Based on Zener pinning mechanism, fine dispersed particles have the ability to pin the subgrains and increase grain misorientation density, which decelerates the DRX process. On the other hand, the coarse second phases act as nucleation sites for DRX in the course of hot deformation in Mg alloy as described in various literature works. − The coarse second-phase particles instigate localized deformation in the matrix, which leads to the accumulation of dislocations at the matrix–precipitate interface . As a result, very fine subgrains are induced in the second phases by polygonization.…”

Section: Discussionmentioning

confidence: 99%

Synergistic Improvement of Antibacterial and Osteogenic Differentiation of Thermomechanically Processed Mg–Zr–Sr-Ce Alloy: Insights into the Role of Precipitate Evolution Supported by AIMD Simulation Study

Sahoo,

Mandal,

Adhikary

et al. 2024

ACS Appl. Bio Mater.

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In the present study, we have discussed the influence of forging temperature (623 K (FT623), 723 K (FT723) and 823 K (FT823)) on microstructure and texture evolution and its implication on mechanical behavior, in vitro-in vivo biocorrosion, antibacterial response, and cytocompatibility of microalloyed Mg−Zr−Sr-Ce alloy. Phase analysis, SEM, and TEM characterization confirm the presence of Mg 12 Ce precipitate, and its stability was further validated by performing ab initio molecular dynamic simulation study. FT723 exhibits strengthened basal texture, higher fraction of second phases, and particle-stimulated nucleation-assisted DRX grains compared to other two specimens, resulting in superior strength with comparable ductility. FT723 also exhibits superior corrosion resistance mainly due to the strengthened basal texture and lower dislocation density. All the specimens exhibit excellent antibacterial behavior with Gram-negative E. coli, Gram-positive Staphylococcus aureus, and Pseudomonas aeruginosa bacteria. 100% reduction of bacterial growth is observed within 24 h of culture of the specimens. Cytocompatibility was determined by challenging specimen extracts with the MC3T3-E1 cell lines. FT723 specimen exhibits the highest cell proliferation and alkaline phosphatase activity (ALP) because of its superior corrosion resistance. The ability of the specimens to be used in orthopedic implant application was evaluated by in vivo study in rabbit femur. Neither tissue-related infection nor the detrimental effect surrounding the implant was confirmed from histological analysis. Significant higher bone regeneration surrounding the FT723 specimen was observed in SEM analysis and fluorochrome labeling. After 60 days, the FT723 specimen exhibits the highest bone formation, suggesting it is a suitable candidate for orthopedic implant application.

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Section: Discussionmentioning

confidence: 99%

Synergistic Improvement of Antibacterial and Osteogenic Differentiation of Thermomechanically Processed Mg–Zr–Sr-Ce Alloy: Insights into the Role of Precipitate Evolution Supported by AIMD Simulation Study

Sahoo,

Mandal,

Adhikary

et al. 2024

ACS Appl. Bio Mater.

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“…The yield strength variation of sheets and bars might be explained by the different SFs of basal slip with the following equation. [ 42 ]

Δ σ_{normaly} = τ_{CRSS} / m

where

Δ σ_{normaly}

is the yield strength increment,

τ_{CRSS}

is the critical resolved shear stress (CRSS), and m is the SF. According to Equation (), the SF is inversely proportional to the yield strength.…”

Section: Discussionmentioning

confidence: 99%

Study on Microstructure and Properties of Single‐Pass Online Heating Rolling of Mn‐Containing Magnesium Alloy Sheets

Xiao

Song

et al. 2022

Adv Eng Mater

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“…Mg-Nd-Zn-Zr alloys are favored by many researchers for their excellent mechanical properties and low RE content [ 15 , 16 , 17 , 18 ]. However, the limited thermoplastic processing conditions of Mg-RE alloys restrict their further application [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior, Processing Maps and Microstructural Evolution of the Mg-2.5Nd-0.5Zn-0.5Zr Alloy

Wang

Yang

et al. 2022

Materials

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Isothermal hot compression experiments were conducted on Mg-2.5Nd-0.5Zn-0.5Zr alloy to investigate hot deformation behavior at the temperature range of 573–773K and the strain rate range of 0.001s−1–10s−1 using a Gleeble-3500D thermomechanical simulator. The results showed that the rheological curve showed a typical work hardening stage, and there were three different stages: work hardening, transition and steady state. A strain compensation constitutive model was established to predict the flow stress of the Mg-2.5Nd-0.5Zn-0.5Zr alloy, and the results proved that it had high predictability. The main deformation mechanism of the Mg-2.5Nd-0.5Zn-0.5Zr alloy was dislocation climbing. The processing maps were established to distinguish the unstable region from the working region. The maps showed that the instability generally occurred at high strain rates and low temperatures, and the common forms of instability were cracking and flow localization. The optimum machining range of the alloy was determined to be 592–773K and 0.001–0.217 s−1. With the increase in deformation temperature, the grain size of the alloy grew slowly at the 573–673K temperature range and rapidly at the 673–773K temperature range.

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Texture role in the mechanical property improvement contributed by grain refinement for Mg-2.6Nd-0.55Zn-0.5Zr alloy subjected to extrusion process

Cited by 16 publications

References 42 publications

Synergistic Improvement of Antibacterial and Osteogenic Differentiation of Thermomechanically Processed Mg–Zr–Sr-Ce Alloy: Insights into the Role of Precipitate Evolution Supported by AIMD Simulation Study

Synergistic Improvement of Antibacterial and Osteogenic Differentiation of Thermomechanically Processed Mg–Zr–Sr-Ce Alloy: Insights into the Role of Precipitate Evolution Supported by AIMD Simulation Study

Study on Microstructure and Properties of Single‐Pass Online Heating Rolling of Mn‐Containing Magnesium Alloy Sheets

Hot Deformation Behavior, Processing Maps and Microstructural Evolution of the Mg-2.5Nd-0.5Zn-0.5Zr Alloy

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