Acta Materialia最新文献

{"title":"Mechanistic origin of oxygen-induced twin suppression in titanium","authors":"Yan Chong ,&nbsp;Tomohito Tsuru ,&nbsp;Reza Gholizadeh ,&nbsp;Andrew M. Minor ,&nbsp;Nobuhiro Tsuji","doi":"10.1016/j.actamat.2025.121523","DOIUrl":"10.1016/j.actamat.2025.121523","url":null,"abstract":"<div><div>Twinning is essential for achieving large ductility in hexagonal close-packed (HCP) titanium alloys that inherently lack independent slip systems due to an asymmetrical HCP crystal structure. Unfortunately, twinning can be suppressed by trace amounts of interstitial oxygen, resulting in a substantially deteriorated ductility in titanium. However, the underlying mechanism for twin suppression due to oxygen remains in dispute. Here, we report a systematic multiscale study on the twinning/detwinning behaviors of Ti-O alloys that provides a clear mechanistic view of how interstitial oxygen inhibits twinning. We reveal for the first time that oxygen atoms segregate to both {<span><math><mrow><mn>10</mn><mover><mn>1</mn><mo>¯</mo></mover><mn>2</mn></mrow></math></span>} tension and {<span><math><mrow><mn>11</mn><mover><mn>2</mn><mo>¯</mo></mover><mn>2</mn></mrow></math></span>} compression twin boundaries using atom probe tomography. Combined with theoretical simulations that unravel a strong pinning effect of oxygen atoms on twin boundary due to an oxygen shuffling mechanism, we explain the distinctive migration abilities of twin boundaries in Ti-O alloys at different temperatures. The insights from our experimental and computational work provide a rationale for the design of titanium alloys with increased tolerance to variations in interstitial impurity content, with significant implications for more widespread use of this high strength, light weight material.</div></div>","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"301 ","pages":"Article 121523"},"PeriodicalIF":9.3,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145043239","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}

{"title":"High-fidelity grain growth modeling: Leveraging deep learning for fast computations","authors":"Pungponhavoan Tep,&nbsp;Marc Bernacki","doi":"10.1016/j.actamat.2025.121486","DOIUrl":"10.1016/j.actamat.2025.121486","url":null,"abstract":"<div><div>Grain growth simulation is crucial for predicting metallic material microstructure evolution during annealing and resulting final mechanical properties, but traditional partial differential equation-based methods are computationally expensive, creating bottlenecks in materials design and manufacturing. In this work, we introduce a machine learning framework that combines a Convolutional Long Short-Term Memory networks with an Autoencoder to efficiently predict grain growth evolution. Our approach captures both spatial and temporal aspects of grain evolution while encoding high-dimensional grain structure data into a compact latent space for pattern learning, enhanced by a novel composite loss function combining Mean Squared Error, Structural Similarity Index Measurement, and Boundary Preservation to maintain structural integrity of grain boundary topology of the prediction. Results demonstrated that our machine learning approach accelerates grain growth prediction by up to 89<!--> <!-->× faster, reducing computation time from 10<!--> <!-->min to approximately 10<!--> <!-->s while maintaining high-fidelity predictions. The best model (S-30-30) achieving a structural similarity score of 86.71<!--> <!-->% and mean grain size error of just 0.07<!--> <!-->%. All models accurately captured grain boundary topology, morphology, and size distributions. This approach enables rapid microstructural prediction for applications where conventional simulations are prohibitively time-consuming, potentially accelerating innovation in materials science and manufacturing.</div></div>","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"301 ","pages":"Article 121486"},"PeriodicalIF":9.3,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145017382","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}

{"title":"Structural Reinforcement of Degraded Ni-Rich Cathodes via Ta5+-Engineering for Highly Stable Lithium-Ion Batteries","authors":"Xiang Long, Tao Zhang, Zuoyu Qin, Lian Duan, Lechuan Liu, Ning Zhang, Gen Chen, Ruifeng Zhang","doi":"10.1016/j.actamat.2025.121522","DOIUrl":"https://doi.org/10.1016/j.actamat.2025.121522","url":null,"abstract":"As the global energy structure undergoes deep transformation, the intensifying contradiction between the rapid expansion of the market share and the limited-service life of lithium-ion batteries has significantly elevated the strategic importance of advancing recycling technologies for spent lithium-ion batteries. Therefore, molten salts regeneration, as an efficient direct recycling technology, has attracted great attention due to its distinct advantages of environmental sustainability and procedural simplicity. While traditional molten salts methods can effectively restore the layered structure of LiNi_xCo_yMn_1−x−yO₂ (NCM), they exhibit fundamental limitations in fine-tuning the innate electrochemical deficiencies of material. In this study, we innovatively introduce TaCl₅ as a dopant into the molten salt system. The large ionic radius of Ta⁵⁺ effectively alleviates phase transition stress during charge/discharge cycles. Simultaneously, the strong Ta–O bonding energy anchors lattice oxygen to suppress oxygen evolution. Furthermore, the electrostatic repulsion generated by Ta⁵⁺ occupying Ni sites inhibits Ni²⁺ migration into Li layers, thereby reducing cation mixing disorder. These three effects synergistically establish a stabilization mechanism characterized by \"stress buffering-oxygen stabilization-cation ordering optimization\". This approach effectively mitigates phase transition stress damage during high-voltage cycling, suppresses lattice oxygen evolution, and reduces cation mixing. The modified and regenerated NCM811 cathode material demonstrates exceptional structural stability and high voltage cycling performance, achieving 81.45% capacity retention after 1000 cycles at 0.5/1 C and maintaining stable capacity retention of 81.36% through 400 cycles at 5 C. This methodology enables deep integration of regeneration processes with material performance enhancement, thereby providing a novel strategy for efficient regeneration of spent cathode materials.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"34 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145017379","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}

{"title":"Hydrogen Modulated Dislocation Reaction and Defect Accumulation in bcc Metals","authors":"Jie Hou, Ducheng Peng, Xiang-Shan Kong, Huiqiu Deng, Wangyu Hu, Cheng Chen, Jun Song","doi":"10.1016/j.actamat.2025.121524","DOIUrl":"https://doi.org/10.1016/j.actamat.2025.121524","url":null,"abstract":"The interaction between dislocations is fundamental to plastic deformation, work hardening, and defect accumulation. While much attention has been focused on effects of solutes on individual dislocations, their influence on dislocation-dislocation reactions remains largely unexplored. In this work, using atomistic simulations of iron as a model bcc system, we uncover a novel mechanism by which hydrogen (H) fundamentally alters the reaction dynamics between 〈111〉/2 screw dislocations, promoting the formation of 〈001〉 edge dislocation junctions, a process that would normally be unfavorable in H-free conditions. This phenomenon arises from the dislocation-character-dependent segregation behavior of H, which reduces the line energy of 〈001〉 edge dislocation and stabilizes the junction. Once formed, these junctions serve as strong pinning sites, impeding the motion of 〈111〉/2 dislocations and facilitating the formation of 〈001〉 vacancy-type dislocation loops. Under continued deformation, these H-decorated loops accumulate locally, providing nucleation sites for structural damages such as cracking and blistering. This mechanism is generic to bcc metals and highlights the critical role of H in dislocation reactions, defect accumulation, and failure initiation. Our findings bridge atomistic mechanisms with recent experimental observations, reshaping our understanding of dislocation behavior in H-rich environments.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"39 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145017377","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}

{"title":"On the development of an interfacial energy and microstructure dependent model to predict bridging phenomenon and solidification cracking behavior","authors":"Mohsen Sheikhi, Mohammad Amin Jabbareh, Shayan Salari, Shadab Sarmast-Ghahfarokhi, Haiou Jin, Zeinab Malekshahi Beiranvand, Y. Norman Zhou, Michael J. Benoit","doi":"10.1016/j.actamat.2025.121520","DOIUrl":"https://doi.org/10.1016/j.actamat.2025.121520","url":null,"abstract":"Solidification cracking is one of the most prevalent defects occurs in casting, welding, and additive manufacturing processes. One of the required parameters that is challenging to specify in the analysis of solidification cracking by most of the common criteria is the bridging liquid fraction (<em>f_l,brid</em>), which refers to the liquid fraction below which solidification cracking susceptibility (SCS) reduces. A model was developed based on the interfacial energies and solidification microstructure size to calculate <em>f_l,brid</em> across different alloy compositions and, in turn, accurately predict the solidification cracking behavior. The higher sensitivity of grain boundaries to cracking compared to dendritic boundaries inside the grain can be easily shown with the model. The model also accurately predicts the composition with the highest cracking susceptibility (C_SCSmax) in various binary aluminium alloy systems. Furthermore, based on this model, changes in C_SCSmax under different processing conditions (i.e., thermal gradient and solidification rate) were accurately predicted by accounting for changes in microstructure size and possible back diffusion occurrence. The model was verified with independent experimental reports and original laser welding experiments.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"86 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009424","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}

{"title":"Crystallographic similarity of the monoclinic intermetallic Fe-Ga phases Fe13Ga9, α-Fe6Ga5 and Fe3Ga4","authors":"G. Kreiner, Y. Kataria, S. Martin, T. Hammerschmidt, A. Leineweber","doi":"10.1016/j.actamat.2025.121516","DOIUrl":"https://doi.org/10.1016/j.actamat.2025.121516","url":null,"abstract":"It is believed that the strong magnetostriction of iron-gallium alloys around 19 at.% and 27 at.% Ga relies on formation of precipitates in a metastable body-centered cubic (bcc)-base matrix showing classical D0₃ ordering. In order to develop a more comprehensive understanding of the interrelationship between the different phases in the Fe-Ga system, the present work examines the crystallographic characteristics of three Ga-rich monoclinic intermetallic phases: metastable Fe₁₃Ga₉, and equilibrium α-Fe₆Ga₅ and Fe₃Ga₄. It is shown that the crystal structures of these phases all can be understood as a coherent set of ordered vacancy-containing bcc-derivative superstructure phases. A formal procedure to derive these structures from the bcc structure is presented and adapted to quantify the similarity with the bcc structure in terms of strain (of the unit cell) and internal displacements of the atoms. This procedure is applied to structure data from first-principles calculations and X-ray diffraction. The analysis demonstrates that within the group of vacancy-containing bcc-derivative crystal structures, certain subgroups of derivatives of the ω-phase structure or the B8 structures can be proposed. These subgroups are relevant for the structures of Fe₁₃Ga₉ and α-Fe₆Ga₅, which can be related, in two nearly equally close ways, with the bcc structure. Physical relevance of the formal derivation of the monoclinic crystal structures is demonstrated by observation of corresponding orientation relationships of grains/domains of α-Fe₆Ga₅ and Fe₃Ga₄ in a two-phase alloy. The insights in the crystal structures of Fe₁₃Ga₉, α-Fe₆Ga₅ and Fe₃Ga₄ are further discussed regarding implications for the lower-Ga content “classical” bcc phases.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"40 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007263","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}

{"title":"Composition-tuned microstructure and enhanced critical current in MOCVD (Gd,Yb)Ba2Cu3O7-δ coated conductors with hierarchical pinning centers","authors":"Meng Li,&nbsp;Shiwei Xu,&nbsp;Qianfu Wang,&nbsp;Yaoyao Zhao,&nbsp;Ping Jiang,&nbsp;Yimin Chen","doi":"10.1016/j.actamat.2025.121517","DOIUrl":"10.1016/j.actamat.2025.121517","url":null,"abstract":"<div><div>The effects of the Cu/Ba and (Gd+Yb)/Ba atomic ratios in MOCVD (Gd,Yb)Ba₂Cu₃O_7-δ (GdYbBCO) films on their microstructural characteristics and critical current behavior were systematically investigated. Specifically, the role of composition ratios in controlling the self-assembly of BaCuO₂ nanorods in the films and their contribution to magnetic flux pinning were analyzed.</div><div>The Cu/Ba ratio determines whether BaCuO₂ precipitates form as surface segregates or vertically aligned nanorods in the matrix. Meanwhile, the (Gd+Yb)/Ba ratio modulates the density, length and cross-sectional width of these nanorods. The interaction and synergy between BaCuO₂ nanorods and (Gd,Yb)₂O₃ nanodots were explored by varying the composition ratios in the films.</div><div>With optimized composition and MOCVD conditions, an array of dense vertically aligned BaCuO₂ nanorods and horizontally distributed (Gd,Yb)₂O₃ nanodots was formed in GdYbBCO films, which significantly enhanced the magnetic flux pinning. The highest-performing GdYbBCO tapes exhibit an angular-minimum critical current density (<em>J</em>_{c_min}) of 13.2 MA/cm² at (4 K, 5 T). The critical current decay with magnetic field at 4 K followed a power law with an exponent α = 0.39. Notably, in magnetic fields above 20 T at 4 K, the <em>J</em>_c of GdYbBCO tapes exceeded that of Zr-doped (Gd,Y)Ba₂Cu₃O_7-δ tapes. These results highlight GdYbBCO tapes as promising candidates for ultrahigh magnetic field applications.</div></div>","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"300 ","pages":"Article 121517"},"PeriodicalIF":9.3,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007265","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}

{"title":"Elucidating hindered reactivity of high-manganese content mixed-olivine cathodes for Na-ion batteries: an operando X-ray absorption study","authors":"Luca Minnetti ,&nbsp;Francesco Paparoni ,&nbsp;Andrea Zitolo ,&nbsp;Mathieu G. Silly ,&nbsp;Edoardo Torretti ,&nbsp;Javad Rezvani ,&nbsp;Francesco Nobili","doi":"10.1016/j.actamat.2025.121518","DOIUrl":"10.1016/j.actamat.2025.121518","url":null,"abstract":"<div><div>Sodium-based olivine cathodes appear to be a viable, sustainable and low-cost alternative in commercial batteries, especially for the stationary electrochemical energy storage. However, high-manganese-content mixed olivine cathodes have not reached desired performance, particularly due to the material’s structural instability and limited reactivity. Hence, to better understand the structural dynamics during battery operation, an in-depth X-ray absorption spectroscopy (XAS) analysis under <em>operando</em> conditions of the electrochemically converted NaFe_0.6Mn_0.4PO₄ (NFMP) cathode is performed. The X-ray absorption near edge structure (XANES) study conducted at both Fe and Mn K-edges reveals uncompleted Mn oxidation in both <em>ex-situ</em> and <em>operando</em> measurements, accompanied by a progressive distortion of the FeO₆ octahedra during de-sodiation. The local structure modifications are confirmed via extended X-ray absorption fine structure (EXAFS), which also reveals the occurrence of Jahn-Teller distortion of Mn³⁺, similarly to lithium-based materials. The obtained results elucidate the hindered reactivity of the material observed in Na-cell, particularly related to Mn³⁺/Mn²⁺ redox couple, and clarify the structural dynamics of the sodium (de-)insertion process. Furthermore, the presented results shed the light on the reasons of the limited Mn³⁺/Mn²⁺ redox activity, and might pave the way to an optimization of the Mn content in mixed olivine cathodes to achieve low-cost, efficient and sustainable materials with improved performances.</div></div>","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"301 ","pages":"Article 121518"},"PeriodicalIF":9.3,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009441","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}

{"title":"Pore-lean directed energy deposition additive manufacturing through laser power modulation","authors":"Kai Zhang, Shishira Bhagavath, Sebastian Marussi, Alexander Rack, Robert Atwood, Martyn A. Jones, Chu Lun Alex Leung, Chinnapat Panwisawas, Junji Shinjo, Peter D. Lee","doi":"10.1016/j.actamat.2025.121515","DOIUrl":"https://doi.org/10.1016/j.actamat.2025.121515","url":null,"abstract":"Directed energy deposition (DED) laser additive manufacturing (AM) is a promising technique for building complex components and performing repair applications. However, large defects can form through coalescence of argon bubbles from the feedstock powder, potentially reducing end-component mechanical performance. Here, we used correlative high-speed synchrotron X-ray and infrared imaging, coupled with multiphysics modelling to develop a strategy to control defect formation. We demonstrate that the bubble dynamics can be controlled by appropriately modulating the laser power, temporarily disrupting the Marangoni flow, enabling bubble release. The bubble control mechanisms discovered here provide a way to achieve defect-lean AM.","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"24 1","pages":""},"PeriodicalIF":9.4,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009437","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}

{"title":"Rheology-informed criteria for tailoring size and morphology in amorphous alloy atomization","authors":"Wan Kim ,&nbsp;Chae Woo Ryu ,&nbsp;Ji Young Kim ,&nbsp;Takehiko Ishikawa ,&nbsp;Koji S. Nakayama ,&nbsp;Eun Soo Park","doi":"10.1016/j.actamat.2025.121510","DOIUrl":"10.1016/j.actamat.2025.121510","url":null,"abstract":"<div><div>Amorphous alloys exhibit exceptional mechanical properties, yet their intrinsic brittleness and size limitations hinder widespread application. Additive manufacturing offers a promising route to overcome these challenges, but gas atomization of highly viscous multicomponent glass-forming alloys often yields non-spherical morphologies, including microscale wires, elliptical particles with tails, and dumbbell-shaped forms, which are rarely observed in conventional crystalline alloys, that compromise feedstock quality. Herein, we identify key thermal and rheological conditions governing size and morphology evolution during high-pressure atomization using Zr₄₆Cu_37.63Ag_8.36Al₈ and Zr₄₆Cu_30.14Ag_8.36Al₈Be_7.5. Acknowledging that melt temperature and atomization geometries cannot fully account for morphology changes across glass-forming alloys with varying viscosity, we highlight the need for a generalizable, rheology-based framework for atomization. Specifically, by integrating rheological data of molten alloys measured using the electrostatic levitation technique with statistical analysis of particle/wire size and morphology, we reveal an exponential relationship between the median (powder/wire) diameter (D_0.5) and the normalized liquidus temperature (T_l/T_Inj), and construct the Weber (W_e) - Ohnesorge (O_h) profile to describe the dynamics of secondary breakup. Consequently, we introduce a dimensionless parameter <span><math><mrow><mstyle><mi>Ω</mi></mstyle><mo>=</mo><mspace></mspace><msub><mi>O</mi><mi>h</mi></msub><msqrt><msub><mi>W</mi><mi>e</mi></msub></msqrt></mrow></math></span> incorporating aerodynamics (W_e) and rheological effects (O_h) and demonstrate that spherical particle formation is favored when Ω &lt; 0.07 and T_l/T_Inj &lt; 0.7. This work paves the way for producing high-quality amorphous alloy feedstocks for additive manufacturing and guiding the tailored fabrication of amorphous alloy components in a broad composition range of glass-forming alloy systems.</div></div>","PeriodicalId":238,"journal":{"name":"Acta Materialia","volume":"301 ","pages":"Article 121510"},"PeriodicalIF":9.3,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007266","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}