In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

Cao, Genghua; Zhang, Datong; Zhang, Weiwen

doi:10.3390/ma9070542

Cited by 21 publications

(7 citation statements)

References 46 publications

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“…Concurrently the bio-corrosion resistance of the processed pure Mg was 10 times better than the as cast Mg. Similar improvements induced by friction stir processing were observed in the case of WE43 alloy [91].…”

Section: Friction Stir Processing and Surface Modificationsupporting

confidence: 79%

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Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Joshi

Dahotre

2022

Biomedical Materials & Devices

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Magnesium based alloys are attractive materials for biomedical applications as a result of their similar properties to the human bone and vital nature of the Mg ions during various functions of the human body. However, these materials suffer from poor corrosion resistance in chloride containing physiological environments. As a result, surface modification of biomedical alloys is needed to not only enhance the corrosion resistance but also biointegration characteristics. The current review article mainly focuses on beam and friction stir based techniques for surface processing of biomedical Mg alloys and composites. Each technique is further divided into sub-methods. Under the beam based processing, surface melting and bioceramic coating synthesis are discussed in detail. In the case of friction based methods, friction stir processing for grain refinement and techniques of surface modification to produce surface bioceramic composites are discussed. Furthermore, latest developments in the area of beam as well as friction stir additive manufacturing of biomedical Mg alloys and composites are elucidated. Lastly, possible directions for future progress and scaling up the lab level developments to actual applications in these materials processing areas for biomedical Mg alloys are provided.

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Section: Friction Stir Processing and Surface Modificationsupporting

confidence: 79%

“…This processing results in modification of surface layer of few mm thick and its refinement. As discussed before, a refined microstructure in case of Mg alloys leads to an improvement of the bio corrosion resistance [58] and surface mechanical properties [90][91][92].…”

Section: Friction Stir Processing and Surface Modificationmentioning

confidence: 81%

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Joshi

Dahotre

2022

Biomedical Materials & Devices

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“…Nevertheless, it still needs to further enhance degradation resistance in order to have biological applications [ 11 , 12 , 13 ]. The rare earth elements such as neodymium (Nd), gadolinium (Gd) and yttrium (Y) have a beneficial effect in increasing degradation resistance and enhance the mechanical properties of magnesium alloys [ 14 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Element Yttrium Modified Mg-Al-Zn Alloy: Microstructure, Degradation Properties and Hardness

et al. 2017

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The overly-fast degradation rates of magnesium-based alloys in the biological environment have limited their applications as biodegradable bone implants. In this study, rare earth element yttrium (Y) was introduced into AZ61 magnesium alloy (Mg-6Al-1Zn wt %) to control the degradation rate by laser rapid melting. The results showed that the degradation rate of AZ61 magnesium alloy was slowed down by adding Y. This was attributed to the reduction of Mg17Al12 phase and the formation of Al2Y phase that has a more active potential, which decreased galvanic corrosion resulting from its coupling with the anodic matrix phase. Meanwhile, the hardness increased as Y contents increased due to the uniform distribution of the Al2Y and Mg17Al12 phases. However, as the Y contents increased further, the formation of excessive Al2Y phase resulted in the increasing of degradation rate and the decreasing of hardness due to its agglomeration.

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“…The homogeneous grain size and second phase distribution attributed to uniform corrosion product. Cao et al 38) revealed that re ned microstructure and homogenous distribution of second phase in friction stir processing sample decreased the undercut effect during corrosion. This might be the main reason for the uniform corrosion morphology exhibited in friction stir processing sample.…”

Section: Three-point Bending Tests Of Mg-2% Sn Alloymentioning

confidence: 99%

Stress Corrosion Behavior of Mg–2 mass% Sn Alloy by Equal-Channel Angular Extrusion

2017

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In this work, the stress corrosion behavior of Mg-2 mass% Sn alloy in simulated body uid solution was systematically investigated to determine its performance in a physiological environment. The effect of equal-channel angular extrusion (ECAE) on stress corrosion behavior of Mg-2 mass% Sn alloy was investigated using three-point bending test. ECAE process changed both grain size and Mg 2 Sn second phase distribution. The average grain size under homogenization annealing condition (about 123.61 μm) was signi cantly reduced to 34.32 μm after four ECAE passes. Mg 2 Sn phase formed more uniformly both in the grains and along the grain boundaries with ECAE process. The average volume fraction of Mg 2 Sn phase increased with increasing passes. The microstructure became more homogeneous with further ECAE passes. In bent-beam stress corrosion test, the average crack depths of samples underwent ECAE process were signi cantly lower than that of sample under homogenization annealing condition. This showed that the ECAE process could reduce crack propagation rate. The enhancement of stress corrosion resistance is attributable to uniform second phase distribution and grain re nement via ECAE process.

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In Vitro Corrosion Study of Friction Stir Processed WE43 Magnesium Alloy in a Simulated Body Fluid

Cited by 21 publications

References 46 publications

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Rare Earth Element Yttrium Modified Mg-Al-Zn Alloy: Microstructure, Degradation Properties and Hardness

Stress Corrosion Behavior of Mg–2 mass% Sn Alloy by Equal-Channel Angular Extrusion

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