Journal of Magnesium and Alloys最新文献_第3页

Simultaneous achievement of high strength and large elongation in extruded Mg/LPSO alloys via the anisotropic mechanical property-induced ductilization (AMID) mechanism 通过各向异性力学性能诱导延展性（AMID）机制，挤压Mg/LPSO合金同时获得高强度和大伸长率

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-10 DOI: 10.1016/j.jma.2025.03.003

Koji Hagihara, Tsuyoshi Mayama, Michiaki Yamasaki, Toko Tokunaga, Mika Sugita, Soya Nishimoto, Kazuki Yamamoto, Kanato Umemura

{"title":"Simultaneous achievement of high strength and large elongation in extruded Mg/LPSO alloys via the anisotropic mechanical property-induced ductilization (AMID) mechanism","authors":"Koji Hagihara, Tsuyoshi Mayama, Michiaki Yamasaki, Toko Tokunaga, Mika Sugita, Soya Nishimoto, Kazuki Yamamoto, Kanato Umemura","doi":"10.1016/j.jma.2025.03.003","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.003","url":null,"abstract":"We discovered two distinctive features in the mechanical properties of extruded Mg alloys containing a long-period stacking ordered (LPSO) phase, which are highly desirable for a new class of high-strength, lightweight materials. First, the Mg/LPSO-extruded alloy shows greater elongation compared to other Mg solid-solution-extruded alloys when a certain high strength is required. Second, the simultaneous achievement of high strength and large elongation in the Mg/LPSO-extruded alloy enhances with a reduction in extrusion speed. In this study, the physical origins of these features were examined, focusing on how changes in the microstructure affect the mechanical properties of the extruded alloys. Our findings clarify that the LPSO phase contributes not only to increased strength but also to enhanced elongation through an increase in the work-hardening rate, a mechanism we termed “anisotropic mechanical property-induced ductilization” (AMID). Until now, most efforts to improve the ductility of Mg materials have focused on achieving “isotropic mechanical properties” via grain refinement. Based on our results, we propose an entirely opposite approach: increasing the elongation of Mg alloy by locally enhancing their “anisotropic mechanical properties” through the AMID mechanism. Computational analysis further suggests that reducing the diameter of Mg-worked grains should effectively improving elongation in Mg/LPSO alloys with a high volume fraction of Mg-worked grains.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"65 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Indentation-induced deformation twinning in magnesium: Phase-field modeling of microstructure evolution and size effects 镁中压痕诱导的变形孪晶：微结构演变和尺寸效应的相场建模

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-09 DOI: 10.1016/j.jma.2025.02.016

Mohsen Rezaee-Hajidehi, Przemysław Sadowski, Stanisław Stupkiewicz

{"title":"Indentation-induced deformation twinning in magnesium: Phase-field modeling of microstructure evolution and size effects","authors":"Mohsen Rezaee-Hajidehi, Przemysław Sadowski, Stanisław Stupkiewicz","doi":"10.1016/j.jma.2025.02.016","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.016","url":null,"abstract":"Magnesium is distinguished by its highly anisotropic inelastic deformation involving a profuse activity of deformation twinning. Instrumented micro/nano-indentation technique has been widely applied to characterize the mechanical properties of magnesium, typically through the analysis of the indentation load–depth response, surface topography, and less commonly, the post-mortem microstructure within the bulk material. However, experimental limitations prevent the real-time observation of the evolving microstructure. To bridge this gap, we employ a recently-developed finite-strain model that couples the phase-field method and conventional crystal plasticity to simulate the evolution of the indentation-induced twin microstructure and its interaction with plastic slip in a magnesium single-crystal. Particular emphasis is placed on two aspects: orientation-dependent inelastic deformation and indentation size effects. Several outcomes of our 2D computational study are consistent with prior experimental observations. Chief among them is the intricate morphology of twin microstructure obtained at large spatial scales, which, to our knowledge, represents a level of detail that has not been captured in previous modeling studies. To further elucidate on size effects, we extend the model by incorporating gradient-enhanced crystal plasticity, and re-examine the notion of ‘smaller is stronger’. The corresponding results underscore the dominant influence of gradient plasticity over the interfacial energy of twin boundaries in governing the size-dependent mechanical response.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"34 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Refinement of Mg2Si in Mg-Al-Si alloys through Ca and Y additions: A novel core-shell structure evolution mechanism and enhanced mechanical properties Ca和Y对Mg-Al-Si合金中Mg2Si的细化：一种新的核壳结构演化机制和增强的力学性能

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-07 DOI: 10.1016/j.jma.2025.03.008

Jinhui Huang, Shuhong Liu, Zheyuan Liu, Xuezhen Che, Martin Friák, Yong Du

{"title":"Refinement of Mg2Si in Mg-Al-Si alloys through Ca and Y additions: A novel core-shell structure evolution mechanism and enhanced mechanical properties","authors":"Jinhui Huang, Shuhong Liu, Zheyuan Liu, Xuezhen Che, Martin Friák, Yong Du","doi":"10.1016/j.jma.2025.03.008","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.008","url":null,"abstract":"Comprehensive experimental and theoretical investigations on microstructure and mechanical properties were conducted to explore the refinement of Mg2Si in Mg-Al-Si alloys through the addition of Ca and Y. Alloys of Mg-Al5.5-Si9.5-Cax (x = 0, 0.05, 0.1, 0.15, wt.%) and Mg-Al5.5-Si9.5-Yx (x = 0, 0.3, 0.6, 0.9, wt.%) were designed based on the CALPHAD (CALculations of PHAse Diagram) calculations and literature data. With the experimentally determined optimal individual addition of 0.1 wt.% Ca and 0.9 wt.% Y respectively, a cross-experiment involving simultaneous addition of Ca and Y for the refinement of Mg2Si was carried out. The alloy composition with the optimal refinement effect and mechanical properties was identified as Mg-Al5.5-Si9.5-Ca0.1-Y0.6 (wt.%). In Y-containing alloys, a novel core-shell structure evolution mechanism of MgSi2Y2//Al4MgY//Mg2Si was proposed based on experimental observation and first principles calculations, revealing MgSi2Y2 as the core for the heterogeneous nucleation of Mg2Si.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"138 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143797905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AZ31 magnesium alloy sheet with high ductility and low anisotropy achieved by a novel asymmetrical angular rolling process 采用一种新颖的不对称角轧制工艺制备了具有高延展性和低各向异性的AZ31镁合金板材

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-05 DOI: 10.1016/j.jma.2025.03.009

Chenze Wang, Zan Liu, Zhihui Cai, Lifang Pan, Guangming Liu, Lifeng Ma

{"title":"AZ31 magnesium alloy sheet with high ductility and low anisotropy achieved by a novel asymmetrical angular rolling process","authors":"Chenze Wang, Zan Liu, Zhihui Cai, Lifang Pan, Guangming Liu, Lifeng Ma","doi":"10.1016/j.jma.2025.03.009","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.009","url":null,"abstract":"The low ductility and strong mechanical anisotropy of wrought magnesium alloys have hindered their further processing and application. In this study, AZ31 magnesium alloy sheet was prepared by a new asymmetrical angular rolling (AAR) process, compared with conventional symmetrical rolling (SR) process and asymmetrical rolling (ASR) process. The effects of three rolling processes on the microstructure, texture and mechanical properties of the alloy sheets were systematically studied. The results show that the AAR sheet exhibits excellent mechanical properties compared to other two rolling processes. It not only achieves the highest ductility of 17.9 %, 17.9 %, and 18.5 % in the three directions, but also has the lowest mechanical anisotropy values for yield strength, ultimate tensile strength and elongation. The AAR process significantly reduces the anisotropy of the material by achieving the smallest average grain size of 4.93 µm and the most homogeneous grain size distribution. Introduced bi-directional asymmetric shear stresses randomizes grain orientation and activates the non-basal slip system, which also significantly reduces the anisotropy. In addition, the tensile twinning mechanism dominates during the AAR process, which contributes to texture weakening and the activation of the non-basal slip system. Through the synergy of these mechanisms, the AAR sheet is characterized by high ductility and low anisotropy.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"63 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring kink strengthening in WZ21 magnesium alloy via slow solidification and extrusion 探讨WZ21镁合金慢凝固和挤压的扭结强化

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-05 DOI: 10.1016/j.jma.2025.03.013

Drahomír Dvorský, Yoshihito Kawamura, Shin-Ichi Inoue, Soya Nishimoto, Jiří Kubásek, Anna Boukalová, Miroslav Čavojský, Luděk Heller, Jan Duchoň, Dalibor Vojtěch

引用次数: 0

Quantitatively regulated and recognized dual-precipitates of Mg-5Sn alloy through an improved twinning-aging-detwinning and strengthening mechanisms 通过改进的孪晶-时效-失孪和强化机制，定量调节和识别Mg-5Sn合金的双析出相

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-05 DOI: 10.1016/j.jma.2025.02.030

Ruihao Fu, Ying Zeng, Yangjie Wan, Xiaoying Qian, Shiwei Xu, Dongdi Yin

{"title":"Quantitatively regulated and recognized dual-precipitates of Mg-5Sn alloy through an improved twinning-aging-detwinning and strengthening mechanisms","authors":"Ruihao Fu, Ying Zeng, Yangjie Wan, Xiaoying Qian, Shiwei Xu, Dongdi Yin","doi":"10.1016/j.jma.2025.02.030","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.030","url":null,"abstract":"The orientation of precipitates was regulated by an improved twinning-aging-detwinning (TAD) process in Mg-Sn sheets. A structure with specific proportions of dual-precipitates was regulated, significantly enhancing the material's strength. The formation mechanism of the dual-precipitates was investigated, and the evolution of precipitate orientation was confirmed. A combined SEM, EBSD and TEM method was developed to identify the coupling relationship between complex grain orientation and precipitate orientation. The orientation relationship between precipitates and the matrix could be quantitatively analyzed in the same region. Subsequently, the Orowan model was refined to quantify the strength enhancement effect following the orientation regulation of precipitates. The TAD sample containing dual-precipitates exhibited a 99.1 % increase in TYS, equivalent to an increase of 108 MPa, compared to unregulated samples A. According to Orowan calculations, the theoretical strength increment from the three strengthening mechanisms was 113 MPa, closely matching the experimental increment of 108 MPa. Notably, the materials with a specific proportion of the dual-precipitates showed a substantial increase in strength.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"16 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving kinetic modelling of magnesium hydrogenation by including interfacial polarisation and interstitial hydrogen clustering behaviour within the site availability model 通过在空位可用性模型中加入界面极化和间隙氢聚类行为，改进镁氢化动力学模型

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-04 DOI: 10.1016/j.jma.2025.03.001

Marcus J. Adams, Alastair Stuart, Gavin S. Walker, David M. Grant

{"title":"Improving kinetic modelling of magnesium hydrogenation by including interfacial polarisation and interstitial hydrogen clustering behaviour within the site availability model","authors":"Marcus J. Adams, Alastair Stuart, Gavin S. Walker, David M. Grant","doi":"10.1016/j.jma.2025.03.001","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.001","url":null,"abstract":"Recent work analysing magnesium hydrogenation using Reflecting Electron Energy Loss Spectroscopy (REELS) and Density Function Theory (DFT) has indicated interfacial polarisation and interstitial hydrogen clustering influence the reaction rate. The site availability model has been modified to include interstitial hydrogen clustering within the site availability factor and interface polarisation using interface treatment. The new model, SAM-CV-S, has demonstrated improved modelling of magnesium hydrogenation across wide operating conditions, such as temperatures from 330 to 400°C and pressures up to 40 bar. This wide applicability makes it a robust model that can be used to simulate bed performance in solid-state hydrogen stores. Thus, the site availability factor successfully combines interstitial hydrogen clustering with thermal resistance effects, which are known to strongly influence metal hydride reactor designs at scale. The next phase of the model is to incorporate a predictive hydrogen capacity method into the model.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"37 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fatigue and deformation mechanisms of ultrasonic spot-welded dissimilar joints of a magnesium alloy to a clad aluminum alloy 镁合金与复合铝合金异种接头超声点焊的疲劳变形机理

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-04 DOI: 10.1016/j.jma.2025.03.005

Soumya Sobhan Dash, Rylan Christopher Fernandes, Xiao Shang, Yu Zou, He Peng, Xianquan Jiang, Xiangfan Fang, Ninshu Ma, Dongyang Li, Daolun Chen

{"title":"Fatigue and deformation mechanisms of ultrasonic spot-welded dissimilar joints of a magnesium alloy to a clad aluminum alloy","authors":"Soumya Sobhan Dash, Rylan Christopher Fernandes, Xiao Shang, Yu Zou, He Peng, Xianquan Jiang, Xiangfan Fang, Ninshu Ma, Dongyang Li, Daolun Chen","doi":"10.1016/j.jma.2025.03.005","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.005","url":null,"abstract":"A low rare-earth containing ZEK100-O magnesium alloy was welded to AA1230-clad high-strength AA2024-T3 aluminum alloy via solid-state ultrasonic spot welding (USW) to evaluate the microstructure, tensile lap shear strength, and fatigue properties. The tensile strength increased with increasing welding energy, peaked at a welding energy of 1000 J, and then decreased due to the formation of an increasingly thick diffusion layer mainly containing Al12Mg17 intermetallic compound at higher energy levels. The peak tensile lap shear strength attained at 1000 J was attributed to the optimal inter-diffusion between the magnesium alloy and softer AA1230-clad Al layer along with the presence of ‘fishhook’-like mechanical interlocks at the weld interface and the formation of an indistinguishable intermetallic layer. The dissimilar joints welded at 1000 J also exhibited a longer fatigue life than other Mg-Al dissimilar joints, suggesting the beneficial role of the softer clad layer with a better intermingling capacity during USW. While the transverse-through-thickness (TTT) failure mode prevailed at lower cyclic loading levels, interfacial failure was the predominant mode of fatigue failure at higher cyclic loads, where distinctive fatigue striations were also observed on the fracture surface of the softer clad Al layer. This was associated with the presence of opening stress and bending moment near the nugget edge despite the tension-tension lap shear cyclic loading applied.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Significant improvement of Jc and flux pinning force of MgB2 by doping NTE-ZrW2O8 particles NTE-ZrW2O8颗粒的掺入显著提高了MgB2的Jc和磁钉力

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-03 DOI: 10.1016/j.jma.2025.02.029

Tianqi Weng, Lingkai Yuan, Chuan Ke, Cui Hua Cheng, Yong Zhao

{"title":"Significant improvement of Jc and flux pinning force of MgB2 by doping NTE-ZrW2O8 particles","authors":"Tianqi Weng, Lingkai Yuan, Chuan Ke, Cui Hua Cheng, Yong Zhao","doi":"10.1016/j.jma.2025.02.029","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.029","url":null,"abstract":"Although introducing second phase particles as additional pinning centers is an effective method to improve the current carrying capacity of MgB2, the thermal strain caused by second phase particles in MgB2 and their impact on flux pinning have not received much attention. In this paper, flux pinning behavior of the thermal strain induced by the second phase particles in the MgB2 bulk materials was studied by doping ZrW2O8 particles which have negative thermal expansion (NTE) characteristics. Due to the significant difference in thermal expansion characters between ZrW2O8 and MgB2, drastic thermal strain was induced in the lattice of MgB2 by doping the NTE-ZrW2O8 particles. These strains work as additional flux pinning centers and significantly enhance the irreversibility field, Hirr, and critical current density, Jc, of the MgB2. Taking Jc as an example, at 4.2 K and 5 T, its Jc value reaches 4.1 × 104 A/cm2, which is a 105 % performance improvement compared to the 2.0 × 104 A/cm2 of the pure MgB2 sample W-0; at 20 K and 2 T, its Jc also reaches 1.3 × 105 A/cm2, which is 1.78 times of the 7.3 × 104 A/cm2 for the pure MgB2 sample under the same conditions. It is interesting that doping ZrW2O8 does not significantly change the scaling behavior of the pinning force, indicating that the lattice strain work like surficial pinning center, while the point defect pinning center initiated by ZrW2O8 particles themselves may only contribute to the high field region, causing the peak in the pinning force scaling curve to shift towards higher fields.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"8 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the degradation behavior of biodegradable metals (Mg, Zn, and Fe) in human duodenal fluid 探索生物可降解金属（Mg、Zn和Fe）在人十二指肠液中的降解行为

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-02 DOI: 10.1016/j.jma.2025.02.034

Yue Zhang, Jian Cao, Huan Liu, Cheng Wang, Chenglin Chu, Feng Xue, Regine Willumeit-Römer, Norbert Hort, Yuanding Huang, Jing Bai

{"title":"Exploring the degradation behavior of biodegradable metals (Mg, Zn, and Fe) in human duodenal fluid","authors":"Yue Zhang, Jian Cao, Huan Liu, Cheng Wang, Chenglin Chu, Feng Xue, Regine Willumeit-Römer, Norbert Hort, Yuanding Huang, Jing Bai","doi":"10.1016/j.jma.2025.02.034","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.034","url":null,"abstract":"Biodegradable metals have been of great interest in making gastrointestinal implants these years. The most researched biodegradable metal is magnesium (Mg), followed by zinc (Zn) and iron (Fe). However, due to the limitations of in vivo experiments and the complex component of the gastrointestinal fluid, their degradation mechanisms in such an environment are still ambiguous. In this work, the human duodenal fluid (HDF) was used to investigate their in vitro degradation behaviors, with a simulated duodenal fluid (SDF) prepared for the control group based on the HDF ionic composition. After immersion of these metals for 7 days, it is found that HDF shows a stronger pH buffering effect than SDF due to the presence of organics. These organics can also hinder the degradation of metals by affecting their product formation in different ways. On the one hand, the adsorption of organics and their effects on the fluid dominate their degradation inhibition effect on Mg and Zn in HDF. On the other hand, they can hinder the further oxidation of the degradation products of Fe, which is the main mechanism resulting in a lower degradation rate of Fe in HDF rather than in SDF. Among the three metals, Mg unsurprisingly shows the highest degradation rate in both fluids. Interestingly, Zn is nearly immune to degradation in HDF, while it presents typical pitting corrosion in SDF. Compared to their degradation rates in popular pseudo-humoral media (e. g. Hanks’ Balanced Salt Solutions, Dulbecco's modified Eagle's medium) reported previously, Mg degrades faster, and Zn and Fe more slowly in HDF. The higher in vitro degradation rate of Fe than that of Zn is influenced by oxygen and ions in the degradation environment.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"8 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0