Acta Metallurgica Sinica-English Letters最新文献

{"title":"Preparation of High-Strength Pure Titanium by Powder Metallurgy: One-Step Pressing Versus Multi-Step Pressing Technique","authors":"Yuhua Li,&nbsp;Yuxin He,&nbsp;Qian Zhang,&nbsp;Chuanwei Zhang,&nbsp;Libin Niu,&nbsp;Yujing Liu,&nbsp;Saisai Zhu,&nbsp;Pei Wang","doi":"10.1007/s40195-025-01911-4","DOIUrl":"10.1007/s40195-025-01911-4","url":null,"abstract":"<div><p>Pure titanium fabricated by powder metallurgy generally encounters problems including low relative density and low strength, which limits its application performance. This work proposed a multi-step pressing (MSP) technique for developing high-strength pure titanium. The MSP processes of spherical Ti powders of 15–53 μm, 53–105 μm, and 75–180 μm were systematically investigated through multi-particle finite element method (MPFEM) compared with conventional one-step pressing (OSP) technique. The relative density, phase constitution, microstructure, and compressive mechanical properties of the sintered bulk pure titanium were characterized. Simulation results demonstrate that the MSP technique significantly increases the relative density of green compacts by 3.2%, 3.3%, and 5.2%, respectively, compared with OSP technique. Experimental results indicate the relative density of the sintered specimens prepared by MSP spherical powders increases by 5.4%, 4.5%, and 4.5%, respectively, compared to OSP, and the yield strength improves by 16%, 13%, and 18%. For the sintered specimens prepared by MSP irregular powder of 15–53 μm, the relative density increases by 6.0% and the yield strength increases by 15%. The enhancement of relative density and yield strength is mainly because the MSP technique mitigates stress concentration between powder particles. Compared to spherical powder, irregular powder exhibits stronger mechanical interlocking owing to the greater propensity for displacement and deformation, which facilitates mutual wedging and interlocking, resulting in superior strength performance.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1839 - 1852"},"PeriodicalIF":3.9,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Near-Room-Temperature Thermoelectric Performance of Mg3Bi2 Through Ag Doping","authors":"Dan Guo,&nbsp;Yijun Ran,&nbsp;Juan He,&nbsp;Lili Zhang,&nbsp;Dayi Zhou,&nbsp;Zhi Yu,&nbsp;Kaiping Tai","doi":"10.1007/s40195-025-01907-0","DOIUrl":"10.1007/s40195-025-01907-0","url":null,"abstract":"<div><p>Mg₃Bi₂-based films are promising near-room-temperature thermoelectric materials for the development of flexible thermoelectric devices. However, the high hole concentration caused by the abundance of intrinsic Mg vacancies easily leads to deterioration of electrical properties, especially for p-type Mg₃Bi₂ film. And the optimization of thermal conductivity of the Mg₃Bi₂-based films is barely investigated. In this work, we demonstrate the improved thermoelectric performances of p-type Mg₃Bi₂ through Ag doping by magnetron sputtering. This doping successfully reduces the hole concentration and broadens the band gap of Mg₃Bi₂, thus resulting in a peak power factor of 442 μW m⁻¹ K⁻² at 525 K. At the same time, Ag doping-induced fluctuations in mass and microscopic strain effectively enhanced the phonon scattering to reduce the lattice thermal conductivity. Consequently, a maximum thermoelectric figure of merit of 0.22 is achieved at 525 K. Its near-room-temperature thermoelectric performances demonstrate superior performance compared to many Mg₃Bi₂-based films. To further evaluate its potential for thermoelectric power generation, we fabricated a thermoelectric device using Ag-doped Mg₃Bi₂ films, which achieved a power density of 864 μW cm⁻² at 35 K temperature difference. This study presents an effective strategy for the advancement of Mg₃Bi₂-based films for application in micro-thermoelectric devices.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1742 - 1750"},"PeriodicalIF":3.9,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Process Parameters on the Microstructure and Properties of Ti15Zr5Cu Alloy Fabricated via Selective Laser Melting","authors":"Yao-Zong Mao,&nbsp;Ya-Hui Zhang,&nbsp;De-Chun Ren,&nbsp;Diao-Feng Li,&nbsp;Hai-Bin Ji,&nbsp;Hai-Chang Jiang,&nbsp;Chun-Guang Bai","doi":"10.1007/s40195-025-01896-0","DOIUrl":"10.1007/s40195-025-01896-0","url":null,"abstract":"<div><p>Ti-Zr-Cu alloy has garnered significant attention in the field of dental implants due to its excellent biocompatibility, antibacterial properties, and potentially controllable mechanical properties. However, two critical challenges remain in the selective laser melting (SLM) fabrication of Ti-Zr-Cu alloy: First, the high thermal conductivity of the Cu element tends to destabilize the solidification behavior of the molten pool, leading to uncontrollable pore defect evolution; Second, the influence of process parameters on the synergistic effects of zirconium solution strengthening and copper precipitation strengthening is not well understood, hindering precise control over the material's mechanical properties. To address these issues, this study systematically elucidates the quantitative impact of energy input on the defect formation mechanisms and strengthening effects in the SLM processing of Ti15Zr5Cu alloy. By optimizing laser power (120–200 W) and scanning speed (450–1200 mm/s) through a full-factor experimental design, we comprehensively analyze the effects of energy input on defect morphology, microstructure evolution, and mechanical performance. The results demonstrate that as energy density decreases, defect types transition from spherical pores to irregular pores, significantly influencing mechanical properties. Based on the defect evolution trends, three distinct energy density regions are identified: the high-energy region, the low-energy region, and the transition region. Under the optimal processing conditions of a laser power of 180 W and a scanning speed of 1200 mm/s, the Ti15Zr5Cu alloy exhibits a relative density of 99.998%, a tensile strength of 1490 ± 11 MPa, and an elongation at break of 6.0% ± 0.5%. These properties ensure that the material satisfies the stringent requirements for high strength in narrow-diameter implants used in the maxilloanterior region. This study provides theoretical and experimental support for the process-property optimization of Ti-Zr-Cu alloys in additive manufacturing and promotes their application in the fabrication of high-performance, antibacterial dental implants.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1699 - 1710"},"PeriodicalIF":3.9,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Composite Structure of Al–Mg–Sc Alloy Prepared by Wire Arc-Directed Energy Deposition with Interlayer Friction Stir Processing","authors":"Y. P. Cui,&nbsp;X. P. Guo,&nbsp;P. Xue,&nbsp;R. Z. Xu,&nbsp;X. M. Guo,&nbsp;D. R. Ni,&nbsp;Z. Y. Ma","doi":"10.1007/s40195-025-01905-2","DOIUrl":"10.1007/s40195-025-01905-2","url":null,"abstract":"<div><p>Interlayer friction stir processing (FSP) has been proved to be an effective method of enhancing the mechanical properties of wire arc-directed energy deposited (WA-DED) samples. However, the original deposition structure was still retained in the FSP-WA-DED component besides the processed zone (PZ), thus forming a composite structure. Considering the material utilization and practical service process of the deposited component, more attention should be paid on this special composite structure, but the relevant investigation has not been carried out. In this study, an Al–Mg–Sc alloy was prepared by WA-DED with interlayer FSP treatment, and the composite structure was firstly investigated. Almost all of the pores were eliminated under the pressure effect from the tool shoulder. The grains were further refined with an average size of about 1.2 μm in the PZ. Though no severe plastic deformation was involved in the retained WA-DED deposition zone, comparable tensile properties with the PZ sample were obtained in the composite structure. Low ultimate tensile strength (UTS) of 289 MPa and elongation of 3.2% were achieved in the WA-DED sample. After interlayer FSP treatment, the UTS and elongation of the PZ samples were significantly increased to 443 MPa and 16.3%, while those in the composite structure remained at relatively high levels of 410 MPa and 13.5%, respectively. Meanwhile, a high fatigue strength of 180 and 130 MPa was obtained in the PZ and composite structure samples, which was clearly higher than that of the WA-DED sample (100 MPa). It is concluded that the defects in traditional WA-DED process can be eliminated in the composite structure after interlayer FSP treatment, resulting in enhanced tensile and fatigue properties, which provides an effective method of improving the mechanical properties of the WA-DED sample.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1794 - 1808"},"PeriodicalIF":3.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cyclic Heat Treatment Induced Spheroidization of α Phase in Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe Alloy","authors":"Yuan Jiang,&nbsp;Baizhi Liang,&nbsp;Shewei Xin,&nbsp;Lei Shi,&nbsp;Siyuan Zhang,&nbsp;Kai Zhang,&nbsp;Hao Wang,&nbsp;Yi Yang,&nbsp;Lai-Chang Zhang","doi":"10.1007/s40195-025-01903-4","DOIUrl":"10.1007/s40195-025-01903-4","url":null,"abstract":"<div><p>In the directed energy deposition (DED) process with high heat input, repeated heating and cooling cycles in the deposited layers have a significant effect on the microstructure. Because of the differences in the cyclic numbers and peak temperatures from the lower layer to the upper layer, inhomogeneous microstructures are formed in the as-built components. In this work, a cyclic heat treatment (CHT) with gradual cooling was used to simulate the thermal process during the DED process of Ti-5Al-3Mo-3V-2Cr-2Zr-1Nb-1Fe (Ti5321) near-β Ti alloy. The effect of CHT on the microstructural evolution, especially the spheroidization of α phase, was investigated. As the CHT cycle increased, the volume fraction of α phase gradually increased from 35.9% after 1 cycle to 60.9% after 100 cycles, and the length of α phase first increased and then gradually decreased, while the width of α phase increased slowly. The aspect ratio of α phase decreased from 9.90 ± 3.39 after 1 cycle to 2.37 ± 0.87 after 100 cycles, implying that CHT induced α phase spheroidization. This phenomenon resulted from both the boundary splitting mechanism and the termination migration mechanism during CHT. The evolution of microstructure affects its mechanical properties. As the CHT cycles increased, the hardness increased overall, from 342.8 ± 5.3 HV after 1 cycle to 400.3 ± 3.4 HV after 100 cycles. This work provides a potential method to tailor the microstructure of near-β Ti alloys by heat treatment alone, especially for non-deformable additively manufactured metal components.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1827 - 1838"},"PeriodicalIF":3.9,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure Modification for Cu–TiB2 Composites by Ultrasonic Power-Assisted in Situ Casting","authors":"Zhifeng Liu,&nbsp;Siruo Zhang,&nbsp;Longjian Li,&nbsp;Zhirou Zhang,&nbsp;Zongning Chen,&nbsp;Ying Fu,&nbsp;Huijun Kang,&nbsp;Zhiqiang Cao,&nbsp;Enyu Guo,&nbsp;Tongmin Wang","doi":"10.1007/s40195-025-01888-0","DOIUrl":"10.1007/s40195-025-01888-0","url":null,"abstract":"<div><p>Ultrasonic vibration treatment (UVT) at varying power was successfully applied to the Cu–TiB₂ composite melt using a SiAlON ceramic sonotrode. The results indicate that TiB₂ particles are more evenly dispersed in the Cu matrix with increasing ultrasonic power, leading to improved mechanical properties of as-cast composites (≤ 1000 W). With 1000 W UVT, the distribution of TiB₂ particles becomes the remarkably uniform and well dispersed, with the size of TiB₂ particle aggregates decreasing from ~ 50 μm without UVT to ~ 5 μm. The ultimate tensile strength, yield strength, and elongation of the as-cast composite are 201 MPa, 85 MPa, and 28.6%, respectively, representing increases of 21.1%, 27.3%, and 43%, respectively, compared to the as-cast composite without UVT. However, when the power is increased to 1500 W, thermal effects are likely to emerge, and the ultrasonic attenuation effect is enhanced, resulting in the re-agglomeration of TiB₂ particles and a deterioration in performance. By quantitatively analyzing the relationships between sound pressure (<i>P</i>_k), sound energy density (<i>I</i>), sound pulse velocity (<i>V</i>), and ultrasonic power, the influence mechanism of ultrasonic power on the composite microstructure has been further elucidated and characterized. This study provides crucial guidance for the industrial application of UVT in the fabrication of Cu matrix composites.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1765 - 1776"},"PeriodicalIF":3.9,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical Properties and Work Hardening Behavior of Tip/Mg-Gd-Y-Zn Composites","authors":"Fang-Fang Cao,&nbsp;Cui-Ju Wang,&nbsp;Kai-Bo Nie,&nbsp;Quan-Xin Shi,&nbsp;Yi-Jia Li,&nbsp;Kun-Kun Deng","doi":"10.1007/s40195-025-01898-y","DOIUrl":"10.1007/s40195-025-01898-y","url":null,"abstract":"<div><p>In this work, Ti_p/Mg-7Gd-2Y-3Zn (Ti_p/GWZ723) composites with various Ti_p sizes (~ 10 μm, ~ 20 μm and ~ 35 μm) were fabricated using semi-solid stirring casting method, the composites were subjected to hot extrusion, and the influence of Ti_p size on long-period stacking ordered (LPSO) phase, dynamic recrystallization (DRX), mechanical properties, and work hardening behavior of the Ti_p/GWZ723 composites was investigated. The results indicate that with the increase in Ti_p size, the grain size of the as-cast Ti_p/GWZ723 composites increases, and the lamellar 14H LPSO phase precipitates within the matrix after homogenization treatment. With the increase in Ti_p size, the reduction in the Ti_p surface area leads to a decrease in surface energy. Consequently, the enrichment of RE element is reduced, which facilitates the formation of the 14H LPSO phase. Moreover, the layer spacing of the 14H LPSO phase decreases. Particle deformation zone (PDZ) is formed around the Ti_p after extrusion, promoting the nucleation of DRX. The PDZ size increases with the increase in the Ti_p size. Nevertheless, the elongation of the Ti_p releases stress and reduces the PDZ size. Simultaneously, the 14H LPSO phase with a small interlayer spacing inhibits the non-basal slip, and the volume fraction of DRX (<i>V</i>_DRX) decreases with the increase in the Ti_p size. With the increase in Ti_p size, the refined grain size and the 14H LPSO phase with smaller interlayer spacing contribute to enhancing the work hardening rate and dynamic recovery rate of the Ti_p/GWZ723 composites. The Ti_p/Mg laminar-like interface formed in the Ti_p/GWZ723 composites can alleviate local stress concentration and inhibit the initiation and propagation of cracks.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1777 - 1793"},"PeriodicalIF":3.9,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Review of Strategies for In Situ Mitigating of Residual Stress in Laser-Based Metal Additive Manufacturing: Insights, Innovations, and Challenges","authors":"Ali Kazemi Movahed,&nbsp;Reza Ghanavati,&nbsp;Abdollah Saboori,&nbsp;Luca Iuliano","doi":"10.1007/s40195-025-01902-5","DOIUrl":"10.1007/s40195-025-01902-5","url":null,"abstract":"<div><p>Additive manufacturing (AM) has emerged as one of the most utilized processes in manufacturing due to its ability to produce complex geometries with minimal material waste and greater design freedom. Laser-based AM (LAM) technologies use high-power lasers to melt metallic materials, which then solidify to form parts. However, it inherently induces self-equilibrating residual stress during fabrication due to thermal loads and plastic deformation. These residual stresses can cause defects such as delamination, cracking, and distortion, as well as premature failure under service conditions, necessitating mitigation. While post-treatment methods can reduce residual stresses, they are often costly and time-consuming. Therefore, tuning the fabrication process parameters presents a more feasible approach. Accordingly, in addition to providing a comprehensive view of residual stress by their classification, formation mechanisms, measurement methods, and common post-treatment, this paper reviews and compares the studies conducted on the effect of key parameters of the LAM process on the resulting residual stresses. This review focuses on proactively adjusting LAM process parameters as a strategic approach to mitigate residual stress formation. It provides a result of the various parameters influencing residual stress outcomes, such as laser power, scanning speed, beam diameter, hatch spacing, and scanning strategies. Finally, the paper identifies existing research gaps and proposes future studies needed to deepen understanding of the relationship between process parameters and residual stress mitigation in LAM.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1657 - 1698"},"PeriodicalIF":3.9,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Tensile Strength and Ductility of Medium-Entropy Alloy via Three Principles of Composition Design","authors":"Z. Q. Wang,&nbsp;J. X. Yan,&nbsp;H. Z. Liu,&nbsp;X. G. Wang,&nbsp;Z. J. Zhang,&nbsp;Z. F. Zhang","doi":"10.1007/s40195-025-01897-z","DOIUrl":"10.1007/s40195-025-01897-z","url":null,"abstract":"<div><p>Composition design is one of the significant methods to break the trade-off relation between strength and ductility of medium-/high-entropy alloys (M/HEAs). Herein, we introduced three fundamental principles for the composition design: high elastic modulus, low stacking-fault energy (SFE), and appropriate phase stability. Subsequently, based on the three principles of component design and the first-principles calculation results, we designed and investigated a non-equiatomic Ni28 MEA with a single-phase and uniform microstructure. The Ni28 MEA has great mechanical properties with yield strength of 329.5 MPa, tensile strength of 829.4 MPa, and uniform elongation of 56.9% at ambient temperature, respectively. The high ductility of Ni28 MEA may be attributed to the dynamically refined microstructure composed of hexagonal close-packed (HCP) lamellas and stacking faults (SFs), which provide extremely high work-hardening ability. This work demonstrates the feasibility of the three principles for composition design and can be extended to more M/HEAs in the future.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1735 - 1741"},"PeriodicalIF":3.9,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and Corrosion Resistance Mechanism of Magnesium–Lithium Alloy Micro-arc Oxidation/Quaternary LDHs@GO Self-healing Composite Film","authors":"Zhenzhen Tian,&nbsp;Rongqian Wu,&nbsp;Fubing Yu,&nbsp;Yan Zhou,&nbsp;Wenhui Yao,&nbsp;Yuan Yuan,&nbsp;Zhihui Xie,&nbsp;Yanlong Ma,&nbsp;Atrens Andrej,&nbsp;Liang Wu","doi":"10.1007/s40195-025-01892-4","DOIUrl":"10.1007/s40195-025-01892-4","url":null,"abstract":"<div><p>Micro-arc oxidation (MAO) film can only provide common mechanical protection for magnesium (Mg)–lithium (Li) alloys. These alloys are susceptible to severe localized corrosion, if the MAO film is disrupted. This work reports the successful hydrothermal preparation of a MgLiAlCe-LDHs@GO film on a MAO-coated Mg–Li alloy following Ce confinement. The graphene oxide (GO) sheet increased the diffusion path of the corrosive media, and the addition of rare-earth cerium ions (Ce³⁺) endowed the film with a certain self-healing ability, which significantly improved the corrosion resistance of the film, and the corrosion current density (<i>i</i>_corr) reached 3.27 × 10⁻⁸ A cm⁻². The synergistic action of GO and Ce³⁺ can achieve long-term corrosion protection for the substrate. The corrosion resistance mechanism of MgLiAlCe-LDHs@GO film was discussed by the scanning vibration electrode technique (SVET).</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1545 - 1558"},"PeriodicalIF":3.9,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}