Journal of Magnesium and Alloys最新文献

{"title":"Micromechanical modeling and evaluation of CNTs reinforced magnesium matrix composites based on stress softening modified constitutive model","authors":"Mingjie Shen ,&nbsp;Baojian Han ,&nbsp;Tao Ying ,&nbsp;Jingya Wang ,&nbsp;Liping Zhou ,&nbsp;Xiangzhen Xue ,&nbsp;Yang Gao ,&nbsp;Zongyang Yang","doi":"10.1016/j.jma.2024.04.008","DOIUrl":"10.1016/j.jma.2024.04.008","url":null,"abstract":"<div><div>Heterogeneous composites have strong anisotropy and are prone to dynamic recrystallization during hot compression, making the mechanical response highly nonlinear. Therefore, it is a very challenging task to intellectually judge the thermal deformation characteristics of magnesium matrix composites (MgMCs). In view of this, this paper introduces a method to accurately solve the thermoplastic deformation of composites. Firstly, a hot compression constitutive model of magnesium matrix composites based on stress softening correction was established. Secondly, the complex quasi-realistic micromechanics modeling of heterogeneous magnesium matrix composites was conducted. By introducing the recrystallization softening factor and strain parameter into the constitutive equation, the accurate prediction of the global rheological response of the composites was realized, and the accuracy of the new constitutive model was proved. Finally, the thermal processing map of magnesium matrix composites was established, and the suitable processing range was chosen. This paper has certain guiding values for the prediction of the thermodynamic response and thermal processing of magnesium matrix composites.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 243-259"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140770836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing corrosion resistance of Mg-Al-Mn-Ca-Y dilute alloy via novel core-shell structured Al8Mn4Y-Al2Ca and controllable solute segregation","authors":"Xiaorui Dong ,&nbsp;Min Zha ,&nbsp;Dawei Wang ,&nbsp;Siqing Wang ,&nbsp;Yajie Yang ,&nbsp;Hailong Jia","doi":"10.1016/j.jma.2023.10.009","DOIUrl":"10.1016/j.jma.2023.10.009","url":null,"abstract":"<div><div>A novel core-shell structured Al₈Mn₄Y-Al₂Ca phase and controllable solute-segregation are elaborately designed in dilute Mg-0.6Al-0.5Mn-0.1Ca-0.1Y alloy (wt.%), via incomplete peritectic transformation during twin-roll casting. When soaked in 3.5 wt.% NaCl solution, Al₂Ca shell with a low electrochemical potential prevents direct contact of noble Al₈Mn₄Y with Mg matrix, mitigating the micro-galvanic corrosion and meanwhile accelerating the formation of uniform corrosion film. Thereafter, solute (Al, Ca)-segregation motivates the formation of heterogeneous multilayered corrosion product films, enhancing corrosion resistance and even achieving self-healing upon long-term corrosion. Notably, the dilute Mg alloy exhibits a corrosion rate as low as 0.22 ± 0.05 mm·y⁻¹.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 172-192"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138560655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Collaborative enhancement of thermal diffusivities and mechanical properties of Csf-Cu/Mg composites via introducing Cu coating with different thicknesses","authors":"Yuan Ma ,&nbsp;Lingjun Guo ,&nbsp;Jiancheng Wang ,&nbsp;Baolin Chen ,&nbsp;Lehua Qi ,&nbsp;Hejun Li","doi":"10.1016/j.jma.2024.01.006","DOIUrl":"10.1016/j.jma.2024.01.006","url":null,"abstract":"<div><div>Mg alloy matrix composites reinforced with short carbon fibers (C_sf/Mg) are considered as potential candidates for integrated structural-functional electronic parts that satisfy the requirements of lightweight, excellent mechanical properties, and heat dissipation. However, the different characteristics of C_sf and Mg alloy make the interface a critical issue affecting the synergistic improvement of thermal and mechanical properties of the composites. Here, Cu coating with different thicknesses is introduced to modify the C_sf/Mg interface, so as to simultaneously enhance the thermal and mechanical performances, which can combine the advantages of coating modification and matrix alloying. Results reveal that thermal diffusivity (TD) of 3-C_sf-Cu/Mg composites is as high as 22.12 mm²/s and an enhancement of 52.97% is achieved compared with C_sf/Mg composites, as well as 16.3% enhancement of ultimate compressive strength (UCS) in the longitudinal direction, 8.84% improvement of UCS in the transverse direction, and 53.08% increasement of ultimate tensile strength (UTS). Such improvement can be ascribed to the formation of intermetallic compounds. The formation of intermetallic compounds can not only effectively alleviate the lattice distortion of the matrix and decrease interfacial thermal resistance, but also bear the loads. Our work is of great significance for designing C_sf/Mg composites with integrated structure and function.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 229-242"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139516448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First-principles investigation of adhesion strength and interfacial bonding in Mg/X (X = Ti, Zr, Hf, V, Nd, Cr, Mo, Mn, and Fe) interface","authors":"Longke Bao ,&nbsp;Zhifu Yao ,&nbsp;Yuhui Zhang ,&nbsp;Cuiping Wang ,&nbsp;Kaihong Zheng ,&nbsp;Rongpei Shi ,&nbsp;Xingjun Liu ,&nbsp;Fusheng Pan","doi":"10.1016/j.jma.2024.04.028","DOIUrl":"10.1016/j.jma.2024.04.028","url":null,"abstract":"","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 83-89"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141051029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elucidating the process mechanism in Mg-to-Al friction stir lap welding enhanced by ultrasonic vibration","authors":"Ming Zhai,&nbsp;Lei Shi,&nbsp;ChuanSong Wu","doi":"10.1016/j.jma.2023.09.032","DOIUrl":"10.1016/j.jma.2023.09.032","url":null,"abstract":"<div><div>The composite structures/components made by friction stir lap welding (FSLW) of Mg alloy sheet and Al alloy sheet are of wide application potentials in the manufacturing sector of transportation vehicles. To further improve the joint quality, the ultrasonic vibration (UV) is exerted in FSLW, and the UV enhanced FSLW (UVeFSLW) was developed for making Mg-to-Al dissimilar joints. The numerical analysis and experimental investigation were combined to study the process mechanism in Mg/Al UVeFSLW. An equation related to the temperature and strain rate was derived to calculate the grain size at different locations of the weld nugget zone, and the effect of grain size distribution on the threshold thermal stress was included, so that the prediction accuracy of flow stress was further improved. With such modified constitutive equation, the numerical simulation was conducted to compare the heat generation, temperature profiles and material flow behaviors in Mg/Al UVeFSLW/FSLW processes. It was found that the exerted UV decreased the temperature at two checking points on the tool/workpiece interface from 707/671 K in FSLW to 689/660 K in UVeFSLW, which suppressed the IMCs thickness at Mg-Al interface from 1.7 µm in FSLW to 1.1 µm in UVeFSLW. The exerted UV increased the horizontal materials flow ability, and decreased the upward flow ability, which resulted in the increase of effective sheet thickness/effective lap width from 2.01/3.70 mm in FSLW to 2.04/4.84 mm in UVeFSLW. Therefore, the ultrasonic vibration improved the tensile shear strength of Mg-to-Al lap joints by 18 %.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 338-355"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71416981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tribological behaviors of AZ91D magnesium alloy under the lubrication of oil suspended synthetic magnesium silicate hydroxide nanotubes","authors":"Y.L. Yin ,&nbsp;H.L. Yu ,&nbsp;H.M. Wang ,&nbsp;X.C. Ji ,&nbsp;Z.Y. Song ,&nbsp;X.Y. Zhou ,&nbsp;M. Wei ,&nbsp;P.J. Shi ,&nbsp;W. Zhang ,&nbsp;C.F. Zhao","doi":"10.1016/j.jma.2024.01.007","DOIUrl":"10.1016/j.jma.2024.01.007","url":null,"abstract":"<div><div>Efficient lubrication of magnesium alloys is a highly challenging topic in the field of tribology. In this study, magnesium silicate hydroxide (MSH) nanotubes with serpentine structures were synthesized. The tribological behavior of AZ91D magnesium alloy rubbed against GCr15 steel was studied under lubricating oil with surface-modified MSH nanotubes as additives. The effects of the concentration, applied load, and reciprocating frequency on the friction and wear of the AZ91D alloy were studied using an SRV-4 sliding wear tester. Results show a decrease of 18.7–68.5% in friction coefficient, and a reduction of 19.4–54.3% in wear volume of magnesium alloy can be achieved by applying the synthetic serpentine additive under different conditions. A suspension containing 0.3 <em>wt.%</em> MSH was most efficient in reducing wear and friction. High frequency and medium load were more conducive to improving the tribological properties of magnesium alloys. A series of beneficial physical and chemical processes occurring at the AZ91D alloy/steel interface can be used to explain friction and wear reduction based on the characterization of the morphology, chemical composition, chemical state, microstructure, and nanomechanical properties of the worn surface. The synthetic MSH, with serpentine structure and nanotube morphology, possesses excellent adsorbability, high chemical activity, and good self-lubrication and catalytic activity. Therefore, physical polishing, tribochemical reactions, and physical-chemical depositions can occur easily on the sliding contacts. A dense tribolayer with a complex composition and composite structure was formed on the worn surface. Its high hardness, good toughness and plasticity, and prominent lubricity resulted in the improvement of friction and wear, making the synthetic MSH a promising efficient oil additive for magnesium alloys under boundary and mixed lubrication.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 379-397"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139917053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of biodegradable biliary stents made of magnesium metals: Current progress and future trends","authors":"Ling Liu ,&nbsp;Tuo En Liu ,&nbsp;Tan To Cheung","doi":"10.1016/j.jma.2024.11.014","DOIUrl":"10.1016/j.jma.2024.11.014","url":null,"abstract":"<div><div>Biliary system, which is responsible for transporting bile from the liver into the intestine, is commonly damaged by inflammation or tumors eventually causing liver failure or death. The implantation of biliary stents can effectively alleviate both benign and malignant biliary strictures, but the plastic and metal stents that are currently used cannot degrade and nearly has no beneficial biological effects, therefore their long-term service can result into inflammation, the formation of sludges and re-obstruction of bile duct. In recent years, magnesium (Mg) metal has been received increasing attention in the field of biomedical application due to its excellent biocompatibility, adequate mechanical properties, biodegradability and other advantages, such as anti-inflammatory and anti-tumor properties. The research on biliary stents made of magnesium metals (BSMM) has also made significant progress and a series of experiments in vitro and vivo has proved their possibility. However, there are still some problems holding back BSMM's clinical use, including rapid corrosion rate and potential harmful reaction. In this review, we would summarize the current research of BSMM, evaluate their clinical benefits, find the choke points, and discuss the solving method.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 30-40"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142776639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Highly corrosion-resistant and photocatalytic hybrid coating on AZ31 Mg alloy via plasma electrolytic oxidation with organic-inorganic integration","authors":"Talitha Tara Thanaa ,&nbsp;Mohammad Aadil ,&nbsp;Alireza Askari ,&nbsp;Arash Fattah-alhosseini ,&nbsp;Mohammad Alkaseem ,&nbsp;Mosab Kaseem","doi":"10.1016/j.jma.2024.11.027","DOIUrl":"10.1016/j.jma.2024.11.027","url":null,"abstract":"<div><div>This study explores the development of an organic-inorganic hybrid coating to enhance the corrosion resistance and photocatalytic properties of AZ31 Mg alloy modified by plasma electrolytic oxidation (PEO). The PEO process typically generates a porous oxide layer, which can reduce corrosion protection by allowing corrosive agents to penetrate the substrate. To address this limitation, phenopyridine (PHEN) and 2-methylimidazole (2-IMD) were incorporated into the PEO surface to form a robust organic layer on the Mg alloy. Potassium hydroxide (KOH) was used to adjust the pH, improving the interaction and solubility between the organic molecules and the PEO coating. The hybrid coating exhibited unique twig-like surface structures that contributed to forming a multifunctional coating with high corrosion resistance and superior photocatalytic activity. The PEO-PHEN-2IMD sample on the Mg alloy demonstrated exceptional corrosion resistance, with the lowest corrosion current density (<em>I_corr</em>) of 1.92 × 10^-10 A/cm², a high corrosion potential (<em>E_corr</em>), and the highest top layer resistance (<em>R_top</em>) of 2.57 × 10⁶ Ω·cm², indicating excellent barrier properties. Additionally, the coating achieved complete (100%) degradation of methylene blue (MB) within 30 min under visible light. Density Functional Theory (DFT) calculations provide deeper insights into the bonding mechanisms and interaction stability between PHEN, 2-IMD, and the PEO layer on the Mg alloy and MB dye. These findings confirmed the enhanced performance of the hybrid coating in both corrosion resistance and photocatalytic applications.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 260-282"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142788573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial mapping of the localized corrosion behavior of a magnesium alloy AZ31B tungsten inert gas weld","authors":"Leslie G. (Bland) Miller ,&nbsp;Corey M. Efaw ,&nbsp;Rebecca F. Schaller ,&nbsp;Kari Higginbotham ,&nbsp;Steve D. Johns ,&nbsp;Paul H. Davis ,&nbsp;Elton Graugnard ,&nbsp;John R. Scully ,&nbsp;Michael F. Hurley","doi":"10.1016/j.jma.2024.12.019","DOIUrl":"10.1016/j.jma.2024.12.019","url":null,"abstract":"<div><div>Sections of a magnesium alloy, AZ31B, joined with tungsten inert gas (TIG) welding, were examined with scanning electrochemical microscopy (SECM) and scanning Kelvin probe force microscopy (SKPFM) to investigate corrosion mechanisms by correlating observed corrosion behavior with weld-affected microstructural variations. Insight into the changing nature of the galvanic couples between weld zones and at localized microgalvanic sites were investigated using SECM and SKPFM to map both electrochemically active regions and Volta potential differences across the weld-affected zones. The formation of an Al-Zn solidification network in the fusion zone (FZ) at and near the TIG weld epicenter differs from the outer heat-affected zone (HAZ), where intermetallic particles (IMPs) are the notable secondary phase from the magnesium matrix. These microstructures were mapped with SKPFM before and after brief exposure to a salt solution, revealing micro-galvanic couples as the main driving force to corrosion initiation and propagation within each zone. The IMPs and Al-Zn solidification network act as strong cathodes and govern the corrosion processes. The galvanic coupling and evolution of the intrinsic corrosion behavior between the weld zones is explained by monitoring the hydrogen evolution reaction (HER) with SECM over time. Anodically induced cathodic activation is confirmed for this welded material, as micro-galvanic couples between microstructural features are found to transition over time to broad electrochemically active areas within the weld-affected zones, resulting in polarity reversal as time of exposure proceeds.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 193-206"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143055549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing the creep resistance in a RE-free cast Mg-Al-Ca alloy through microalloying of Ti","authors":"Zhuang Cui ,&nbsp;Yang Liu ,&nbsp;Ying Zeng ,&nbsp;Manping Liu ,&nbsp;Xiaochun Liu ,&nbsp;Shiwei Xu ,&nbsp;Xuefei Chen ,&nbsp;Qudong Wang","doi":"10.1016/j.jma.2024.03.015","DOIUrl":"10.1016/j.jma.2024.03.015","url":null,"abstract":"<div><div>High temperature performance of magnesium alloys can be tailored by either grain size or precipitates in the grain interior. In this study, exceptional creep resistance was successfully acquired in a RE-free cast Mg-Al-Ca-Ti (AC51Ti) alloy. Microalloying of Ti (0.01 wt.%) has been found to be beneficial to the improvement of the tensile creep resistance in a RE-free cast Mg-5Al-0.35Mn-(1Ca) (AC51) alloy, showing a low state creep rate (SCR) of 2.70 × 10⁻⁹ <em>s</em>⁻¹ at 200 °C/50 MPa, which is even better than that of many reported RE-containing Mg alloys. The presence of trace Ti contributes to the substantial refinement and more uniform distribution of Al₂Ca precipitates in the matrix. At the same time, the microalloying of Ti improves the solubility of Al and Ca in the matrix. It is reasonable to believe that the microalloying of Ti induced re-organization of Al₂Ca precipitates, dissolved a larger amount of Al and Ca atoms into magnesium lattice, and increased the possibility of interaction between GB/dislocations and precipitates, which strongly correlates with the high temperature properties. The creep strengthening mechanisms primarily attributed to both second phase strengthening and solid solution strengthening were separately proposed based on the experimental investigations.</div></div>","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"13 1","pages":"Pages 414-428"},"PeriodicalIF":15.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140779513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}