期刊,镁合金学报（英文） 2024年卷1期_国家学术搜索

期刊信息/Journal information

镁合金学报（英文）

国际刊号：2213-9567

镁合金学报（英文）/Journal Journal of Magnesium and AlloysCSCD北大核心EISCI

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A comprehensive review on the processing-property relationships of laser strengthened magnesium

Alessandro M.RallsAaksheta AgnelPradeep L.Menezes

1-38页

查看更多>>摘要：Among the existing series of softer metals,magnesium(Mg)has attracted much attention due to its impressive strength-to-weight ratio.How-ever,due to its ease of deformability,Mg tends to suffer from rapid degradation in a wide variety of abrasive and electrochemical environments.One method of improving its surface properties is through surface modification techniques.Among the existing techniques,laser shock peening(LSP)has been one of the most widely utilized processes due to its surface-hardening-like effects.Despite this understanding,a comprehensive review has yet to exist that encapsulates the strengthening mechanism of LSP for Mg and its influence in degradation environments.This review aims to encapsulate the existing research around the LSP field for Mg.Specifically,an understanding of the surface-strengthening effects in rela-tion to its mechanical,tribological,corrosion,and tribo-corrosion characteristics is elucidated.Additionally,the feasibility of LSP for Mg materi-als in critical industries is also discussed.Through this work,a novel understanding of LSP for Mg can be understood,which can provide a fu-ture direction for research in this field.

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维普
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Recent advances in electrochemical performance of Mg-based electrochemical energy storage materials in supercapacitors:Enhancement and mechanism

Yuntao XiaoXinfang ZhangCan WangJinsong Rao...

39-65页

查看更多>>摘要：The application of Mg-based electrochemical energy storage materials in high performance supercapacitors is an essential step to promote the exploitation and utilization of magnesium resources in the field of energy storage.Unfortunately,the inherent chemical properties of magnesium lead to poor cycling stability and electrochemical reactivity,which seriously limit the application of Mg-based materials in supercapacitors.Here-in,in this review,more than 70 research papers published in recent 10 years were collected and analyzed.Some representative research works were selected,and the results of various regulative strategies to improve the electrochemical performance of Mg-based materials were discussed.The effects of various regulative strategies(such as constructing nanostructures,synthesizing composites,defect engineering,and binder-free synthesis,etc.)on the electrochemical performance and their mechanism are demonstrated using spinel-structured MgX2O4 and layered struc-tured Mg-X-LDHs as examples.In addition,the application of magnesium oxide and magnesium hydroxide in electrode materials,MXene's sol-id spacers and hard templates are introduced.Finally,the challenges and outlooks of Mg-based electrochemical energy storage materials in high performance supercapacitors are also discussed.

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维普
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Peri-implant gas accumulation in response to magnesium-based musculoskeletal biomaterials:Reframing current evidence for preclinical research and clinical evaluation

Yu SunHeike HelmholzRegine Willumeit-R?mer

66-80页

查看更多>>摘要：Historically,the rapid degradation and massive gas release from magnesium(Mg)implants resulted in severe emphysema and mechanical fail-ure.With the advent of new alloys and surface treatment methods,optimized Mg implants have re-entered clinics since last decade with reliable performance.However,the optimization aims at slowing down the degradation process,rather than exemption of the gas release.This study in-volved a systematic evaluation of current preclinical and clinical evidence,regarding the physical signs,symptoms,radiological features,patho-logical findings and complications potentially associated with peri-implant gas accumulation(PIGA)after musculoskeletal Mg implantation.The literature search identified 196 potentially relevant publications,and 51 papers were enrolled for further analysis,including 22 preclinical tests and 29 clinical studies published from 2005 to 2023.Various Mg-based materials have been evaluated in animal research,and the application of pure Mg and Mg alloys have been reported in clinical follow-ups involving multiple anatomical sites and musculoskeletal disorders.Soft tissue and intraosseous PIGA are common in both animal tests and clinical follow-ups,and potentially associated with certain adverse events.Radio-logical examinations especially micro-CT and clinical CT scans provide valuable information for quantitative and longitudinal analysis.While according to simulation tests involving Mg implantation and chemical processing,tissue fixation could lead to an increase in the volume of gas cavity,thus the results obtained from ex vivo imaging or histopathological evaluations should be interpreted with caution.There still lacks stand-ardized procedures or consensus for both preclinical and clinical evaluation of PIGA.However,by providing focused insights into the topic,this evidence-based study will facilitate future animal tests and clinical evaluations,and support developing biocompatible Mg implants for the treat-ment of musculoskeletal disorders.

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维普
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Influence of laser parameters on the microstructures and surface properties in laser surface modification of biomedical magnesium alloys

Chee Ying TanCui E WenHua Qian Ang

81-110页

查看更多>>摘要：Biodegradable implants from magnesium(Mg)alloys have emerged in the biomedical field especially in the orthopedic and cardiovascular stent applications owing to their low density,high specific strength,excellent machinability,good biocompatibility,and biodegradability.The pri-mary shortcoming of Mg-based implants is their low corrosion resistance in the physiological environment,which results in premature mechani-cal integrity loss before adequate healing and the production of excessive hydrogen gas,which is harmful to the body tissues and negatively af-fects the biocompatibility of the implant.Laser surface modification has recently received attention because it can improve the surface properties such as surface chemistry,roughness,topography,corrosion resistance,wear resistance,hydrophilicity,and thus cell response to the surface of the material.The composition and microstructures including textures and phases of laser-treated surfaces depend largely on the laser processing parameters(input laser power,laser scan velocity,frequency,pulse duration,pressure,gas circulation,working time,spot size,beam focal posi-tion,and laser track overlap)and the thermophysical properties of the substrate(solubility,melting point,and boiling point).This review investi-gates the impacts of various laser surface modification techniques including laser surface melting,laser surface alloying,laser cladding,laser sur-face texturing,and laser shock peening,and highlights their significance in improving the surface properties of biodegradable Mg alloys for im-plant applications.Additionally,we explore how different laser process parameters affect its composition,microstructure,and surface properties in each laser surface modification technique.

原文链接:

维普
万方数据

Experimental and simulation research on hollow AZ31 magnesium alloy three-channel joint by hot extrusion forming with sand mandrel

Shi ShengnanWang HongyuTeng FeiJiang Lei...

111-124页

查看更多>>摘要：Magnesium alloy is one of the lightest metal structural materials.The weight is further reduced through the hollow structure.However,the hollow structure is easily damaged during processing.In order to maintain the hollow structure and to transfer the stresses during the high tem-perature deformation,the sand mandrel is proposed.In this paper,the hollow AZ31 magnesium alloy three-channel joint is studied by hot extru-sion forming.Sand as one of solid granule medium is used to fill the hollow magnesium alloy.The extrusion temperatures are 230 ℃ and 300℃,respectively.The process parameters(die angle,temperature,bottom thickness,sidewall thickness,edge-to-middle ratio in bottom,bottom shape)of the hollow magnesium alloy are analyzed based on the results of experiments and the finite element method.The results are shown that the formability of the hollow magnesium alloy will be much better when the ratio of sidewall thickness to the bottom thickness is 1∶1.5.Al-so when edge-to-middle ratio in bottom is about 1∶1.5,a better forming product can be received.The best bottom shape in these experiments will be convex based on the forming results.The grain will be refined obviously after the extrusion.Also the microstructures will be shown as streamlines.And these lines will be well agreement with the mold in the comer.

原文链接:

维普
万方数据

Mg/MgO interfaces as efficient hydrogen evolution cathodes causing accelerated corrosion of additive manufactured Mg alloys:A DFT analysis

Kai Xiang KuahMan Fai NgTeck Leong TanDaniel John Blackwood...

125-136页

查看更多>>摘要：The corrosion rates of additive-manufactured Mg alloys are higher than their as-cast counterparts,possibly due to increased kinetics for the hydrogen evolution reaction on secondary phases,which may include oxide inclusions.Scanning Kelvin Probe Force Microscopy demonstrated that MgO inclusions could act as cathodes for Mg corrosion,but their low conductivity likely precludes this.However,the density of state calcu-lations through density functional theory using hybrid HSE06 functional revealed overlapping electronic states at the Mg/MgO interface,which facilitates electron transfers and participates in redox reactions.Subsequent determination of the hydrogen absorption energy at the Mg/MgO in-terface reveals it to be an excellent catalytic site,with HER being found to be a factor of 23x more efficient at the interface than on metallic Mg.The results not only support the plausibility of the Mg/MgO interface being an effective cathode to the adjacent anodic Mg matrix during corro-sion but also contribute to the understanding of the enhanced cathodic activities observed during the anodic dissolution of magnesium.

原文链接:

维普
万方数据

Degradation and biocompatibility of one-step electrodeposited magnesium thioctic acid/magnesium hydroxide hybrid coatings on ZE21B alloys for cardiovascular stents

Zhao-Qi ZhangBing-Zhi LiPei-Duo TongShao-Kang Guan...

137-157页

查看更多>>摘要：Constructing a functional hybrid coating appears to be a promising strategy for addressing the poor corrosion resistance and insufficient endo-thelialization of Mg-based stents.Nevertheless,the steps for preparing composite coatings are usually complicated and time-consuming.Herein,a novel composite coating,composed of bioactive magnesium thioctic acid(MTA)layer formed by deposition and corrosion-resistant magnesi-um hydroxide(Mg(OH)2)layer grown in situ,is simply fabricated on ZE21B alloys via one-step electrodeposition.Scanning electron microsco-py(SEM)shows that the electrodeposited coating has a compact and uniform structure.And the high adhesion of the MTA/Mg(OH)2 hybrid coating is also confirmed by the micro-scratch test.Electrochemical test,scanning kelvin probe(SKP),and hydrogen evolution measurement in-dicate that the hybrid coating effectively reduces the degradation rate of Mg substrates.Haemocompatibility experiment and cell culture trial de-tect that the composite coating is of fine biocompatibility.Finally,the preparation mechanism of MTA/Mg(OH)2 hybrid coatings is discussed and proposed.This coating shows a great potential application for cardiovascular stents.

原文链接:

维普
万方数据

The corrosion characteristic and mechanism of Mg-5Y-1.5Nd-xZn-0.5Zr(x=0,2％,4％,6％)alloys in marine atmospheric environment

Quantong JiangDongzhu LuLiren ChengNazhen Liu...

158-178页

查看更多>>摘要：The microstructure and precipitated phases of as-cast Mg-5Y-1.5Nd-xZn-0.5Zr(x=0％,2％,4％,6％,in mass fraction)alloys were investi-gated by optical microscopy,scanning electron microscopy,energy-dispersive spectrometry and X-ray diffraction.The exposure corrosion exper-iment of these magnesium alloys was tested in South China Sea and KEXUE vessel atmospheric environment.The corrosion characteristic and mechanism of magnesium alloys of Mg-5Y-1.5Nd-xZn-0.5Zr(x=0％,2％,4％,6％,in mass fraction)alloys were analyzed by weight loss rate,corrosion depth,corrosion products and corrosion morphologies.The electrochemical corrosion tests were also measured in the natural sea-water.The comprehensive results showed that Mg-5Y-1.5Nd-4Zn-0.5Zr magnesium alloy existed the best corrosion resistance whether in the marine atmospheric environment and natural seawater environment.That depended on the microstructure,type and distribution of precipitated phases in Mg-5Y-1.5Nd-4Zn-0.5Zr magnesium alloy.Sufficient quantity anodic precipitated phases in the microstructure of Mg-5Y-1.5Nd-4Zn-0.5Zr alloy played the key role in the corrosion resistance.

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Superconducting joints using reacted multifilament MgB2 wires:A technology toward cryogen-free MRI magnets

Dipak PatelAkiyoshi MatsumotoHiroaki KumakuraYuka Hara...

179-191页

查看更多>>摘要：The development of superconducting joining technology for reacted magnesium diboride(MgB2)conductors remains a critical challenge for the advancement of cryogen-free MgB2-based magnets for magnetic resonance imaging(MRI).Herein,the fabrication of superconducting joints using reacted carbon-doped multifilament MgB2 wires for MRI magnets is reported.To achieve successful superconducting joints,the powder-in-mold method was employed,which involved tuning the filament protection mechanism,the powder compaction pressure,and the heat treat-ment condition.The fabricated joints demonstrated clear superconducting-to-normal transitions in self-field,with effective magnetic field screen-ing up to 0.5 T at 20 K.To evaluate the interface between one of the MgB2 filaments and the MgB2 bulk within the joint,serial sectioning was conducted for the first time in this type of superconducting joint.The serial sectioning revealed space formation at the interface,potentially caused by the volume shrinkage associated with the MgB2 formation or the combined effect of the volume shrinkage and the different thermal expansion coefficients of the MgB2 bulk,the filament,the mold,and the sealing material.These findings are expected to be pivotal in develo-ping MgB2 superconducting joining technology for MRI magnet applications through interface engineering.

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Compressive property and energy absorption characteristic of interconnected porous Mg-Zn-Y alloys with adjusting Y addition

J.A.LiuS.J.LiuB.WangW.B.Sun...

192-206页

查看更多>>摘要：In this study,interconnected porous Mg-2Zn-xY alloys with different phase compositions were prepared by various Y additions(x=0.4％,3.0％,and 6.0％,in mass fraction)to adjust the compressive properties and energy absorption characteristics.Several characterization methods were then applied to identify the microstructure of the porous Mg-Zn-Y and describe the details of the second phase.Compressive tests were performed at room temperature(RT),200 ℃,and 300 ℃ to study the impact of the Y addition and testing temperature on the compressive prop-erties of the porous Mg-Zn-Y.The experimental results showed that a high Y content promotes a microstructure refinement and increases the volume fraction of the second phase.When the Y content increases,different Mg-Zn-Y ternary phases appear:Ⅰ-phase(Mg3Zn6Y),W-phase(Mg3Zn3Y2),and LPSO phase(Mg12ZnY).When the Y content ranges between 0.4％and 6％,the compressive strength increases from 6.30 MPa to 9.23 MPa,and the energy absorption capacity increases from 7.33 MJ·m-3 to 10.97 MJ·m-3 at RT,which is mainly attributed to the phase composition and volume fraction of the second phase.However,the average energy absorption efficiency is independent of the Y content.In addition,the compressive deformation behaviors of the porous Mg-Zn-Y are altered by the testing temperature.The compressive strength and energy absorption capacity of the porous Mg-Zn-Y decrease due to the softening effect of the high temperature on the struts.

原文链接:

维普
万方数据