Materials Science and Engineering: A最新文献

{"title":"Microstructural evolution and superplastic behavior of a novel extruded powder metallurgy nickel-based superalloy during hot deformation","authors":"Yanzhuo Liu ,&nbsp;Qianlong Ren ,&nbsp;Xingyun Fan ,&nbsp;Hongqiang Du ,&nbsp;Yongsheng Wei ,&nbsp;Yingnan Shi ,&nbsp;Jinhui Wang ,&nbsp;Peipeng Jin ,&nbsp;Lijia Chen ,&nbsp;Xinmei Hou","doi":"10.1016/j.msea.2026.149912","DOIUrl":"10.1016/j.msea.2026.149912","url":null,"abstract":"<div><div>This study systematically investigated the hot deformation and superplastic behavior of a novel powder metallurgy (P/M) nickel-based superalloy after hot extrusion. Isothermal compression tests were conducted at 1075–1150 °C and strain rates of 1–0.001 s⁻¹ to analyze the relationships among the flow stress, strain rate sensitivity exponent (m) values, and microstructural evolution. The results indicated that at high strain rates (1–0.1 s⁻¹), the alloy was in the non-superplastic deformation region (m &lt; 0.4), with deformation primarily governed by dislocation slip together with discontinuous dynamic recrystallization and continuous dynamic recrystallization. The primary and elongated γ′ promoted the nucleation of dynamic recrystallization (DRX) by enhancing the local strain distribution and impeding dislocation slip. At lower strain rates (0.01–0.001 s⁻¹), the alloy entered the superplastic deformation region (m &gt; 0.4), where the deformation mechanism shifted to grain boundary sliding (GBS) coordinated with diffusion creep and recrystallization. In the superplastic deformation region, step-like grain boundaries appeared at low angle grain boundaries (LAGBs) accompanied by Cr and Co depleted zones, indicating that GBS and diffusion creep acted cooperatively to achieve stress relaxation. With increasing strain, LAGBs gradually transformed into wavy high-angle grain boundaries (HAGBs), indicating enhanced grain boundary migration and solute redistribution. The synergistic mechanism among GBS drove deformation, diffusion coordination, and DRX stabilization, which ensured homogeneous microstructural evolution and plastic stability. This study elucidated the role of γ′ morphology and carbides in superplastic flow, providing theoretical guidance for optimizing the isothermal forging process of P/M superalloy turbine disks.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149912"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172768","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 and performance nonuniformity in cold spray additive manufacturing of titanium, copper, and aluminum","authors":"Xinying Wei,&nbsp;Hongxia Zhou,&nbsp;Shengyi Cong","doi":"10.1016/j.msea.2026.149903","DOIUrl":"10.1016/j.msea.2026.149903","url":null,"abstract":"<div><div>The tamping effect is an intrinsic feature in cold spraying, but it varies among different materials. This issue deserves attention in the cold spraying additive manufacturing (CSAM), yet so far, there have been few in-depth research reports on this subject. In this work, thick deposits of titanium (Ti), copper (Cu), and aluminum (Al) were fabricated via CSAM and sectioned into five layers along the deposition direction. Microstructural evolution and mechanical properties of the deposits across the different layers were systematically investigated. The results indicate that, at the bottom of the deposit, Ti, Cu and Al all contain fully deformed particles as a result of the tamping effect, exhibiting relatively low porosity along with concurrent increases in hardness and plasticity. As the layer height increases, the tamping effect progressively diminishes, leading to distinct variations among the three materials: the deformation, hardness, and ultimate tensile strength (UTS) of Ti particles exhibit a significant reduction, accompanied by a decreased dynamic recrystallization (DRX) fraction, resulting in pronounced grain coarsening and the most evident microstructural and mechanical property inhomogeneity. However, the recrystallization ratio of each Cu layer reaches up to 60%, with minimal grain size variation and only slight decreases in hardness and strength. And, Al exhibits the lowest recrystallization fraction, and during tensile testing, a ductile-to-brittle transition was observed, accompanied by a sharp simultaneous decline in both strength and ductility in the top layer. The observed differences can be attributed to the intrinsic ductility of the materials and the dynamic recrystallization behavior during deposition.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149903"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172767","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":"On the non-monotonic temperature dependence of ductility in TiZrHfNb high-entropy alloy: A mechanistic investigation","authors":"Zhouqin Zhang ,&nbsp;Peng Gao ,&nbsp;Lv Zhao ,&nbsp;Minsheng Huang ,&nbsp;Shuang Liang ,&nbsp;Yaxin Zhu ,&nbsp;Zhenhuan Li","doi":"10.1016/j.msea.2026.149899","DOIUrl":"10.1016/j.msea.2026.149899","url":null,"abstract":"<div><div>This study systematically investigates the tensile mechanical behavior and deformation mechanisms of TiZrHfNb RHEA from 293 K to 873 K. The as-cast alloy exhibits a homogeneous microstructure and a good balance of strength and ductility at 293 K, with a yield strength of 692.3 MPa and a fracture elongation of 17.4%. As temperature increases, the tensile strength continuously decreases to 454.5 MPa at 873 K. Notably, the tensile elongation displays a non-monotonic temperature dependence: it initially increases significantly, reaching a peak value of 28.4% at 473 K, then decreases to 19.1% at 673 K, before recovery at 873 K despite the occurrence of strain softening. Extensive microstructural analysis reveals a progressive evolution of deformation mechanisms: localized planar slip dominates at 293 K, whereas wavy slip prevails at 473 K, facilitated by enhanced cross-slip and the formation of dislocation dipolar walls, which effectively coordinate strain hardening and dynamic recovery, thereby promoting uniform plastic deformation. At 673 K, dislocation entanglements resulting from the frequent intersections of screw dislocations with increased edge and mixed dislocations hinder dislocation motion, thereby enhancing strain hardening at the expense of ductility. Upon further increasing the temperature to 873 K, dynamic recrystallization is activated, resulting in strain softening, while effectively delaying fracture initiation. These results provide direct mechanistic insights into the temperature-dependent ductility of RHEAs and offer guidance for tailoring advanced RHEAs with optimized performance.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149899"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172776","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":"Microstructural evolution and mechanical behavior of resistance spot welded CoCrFeMnNi high-entropy alloy: Experimental and simulation insights","authors":"Tejal Arora ,&nbsp;Kaushal Kishore ,&nbsp;Prashanth Kumar Reddy Gillela ,&nbsp;Eun Seong Kim ,&nbsp;Jeevan Jaidi ,&nbsp;Praveen Sathiyamoorthi ,&nbsp;Hyoung Seop Kim ,&nbsp;Manogna Karthik Gangaraju","doi":"10.1016/j.msea.2026.149918","DOIUrl":"10.1016/j.msea.2026.149918","url":null,"abstract":"<div><div>This study investigates resistance spot welding of CoCrFeMnNi high-entropy alloy (HEA) sheets, which has not been previously reported to the best of the authors' knowledge. Defect-free welds of adequate nugget diameter were achieved, exhibiting columnar dendrites in the fusion zone (FZ) and equiaxed grains in the base metal and heat affected zone (HAZ), while retaining a single-phase face-centred cubic structure. Coupled electro-thermomechanical simulations captured nugget growth and residual stress evolution across the weld zones, explaining the localized increase in geometrically necessary dislocation density and the corresponding ∼40% rise in hardness in the HAZ. A partially melted zone near the fusion boundary, was attributed to the alloy's low thermal conductivity and wide freezing range (∼162 K), which facilitated localized liquation. Lap-shear testing showed a desirable pull-out mode of failure, with fractography and electron backscattered diffraction analyses revealing ductile fracture features and deformation-induced mechanical twinning near the fracture line. Scheil's solidification predictions matched the observed Mn and Ni segregation in the FZ. Contributions from solid solution, Hall-Petch, and Taylor hardening were quantified, with the HAZ showing the highest predicted yield strength. Overall, these findings can pave the way for the deployment of HEAs in demanding automotive applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149918"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403401","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 Laves phase on hydrogen storage properties of BCC Ti-V-Nb–Cr–Mn high entropy alloys","authors":"Leandro Bernardes Serrano ,&nbsp;Maria Moussa ,&nbsp;Gilbert Silva ,&nbsp;Sydney Ferreira Santos ,&nbsp;Jean-Louis Bobet ,&nbsp;Kátia Regina Cardoso","doi":"10.1016/j.msea.2026.149936","DOIUrl":"10.1016/j.msea.2026.149936","url":null,"abstract":"<div><div>The high entropy alloys (HEA) have demonstrated interesting properties, such as high capacity for hydrogen absorption at room temperature with easy activation. This study presents the results of research and development on HEA alloys within the Ti-V-Nb-Cr-Mn system for hydrogen storage applications. Alloy design was carried out using the CALPHAD method with Thermo-Calc software. The variation in Cr and Mn compositions, ranging from 9% to 12.5%, influences the phase fractions in the alloy's microstructure, including the BCC (body-centered cubic) solid solution and the Laves phase. The volume fraction and distribution of these phases can be modified through heat treatments, affecting the hydrogen-related properties of the alloys. The results revealed the formation of BCC and Laves phases, dependent on the alloy composition and heat treatment. Notably, alloys predominantly consisting of the BCC phase, with a minor fraction of Laves phase, demonstrated significant potential as hydrogen storage materials. Maximum absorption capacity values were observed, 2,2 wt% in the Ti_27.5V_27.5Nb₂₀Cr_12.5Mn_12.5 alloy and 2.9 wt% in the Ti₃₂V₃₂Nb₁₈Cr₉Mn₉ alloy. The kinetics and reversibility of the absorption and desorption processes were enhanced by a small amount of the Laves phase. These results highlight the potential of Ti-V-Nb-Cr-Mn HEA for efficient hydrogen storage applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149936"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403929","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 twin-related coincident site lattice (CSL) boundaries and their network on strengthening and plasticity in 316L stainless steel","authors":"Rajneesh Yadav,&nbsp;Nitin Kumar Sharma","doi":"10.1016/j.msea.2026.149893","DOIUrl":"10.1016/j.msea.2026.149893","url":null,"abstract":"<div><div>The present work investigates the effect of twin-related coincident site lattice (CSL) boundaries on the bulk mechanical response of 316L stainless steel. Thermomechanical processing (TMP) was used to produce two samples with different CSL fractions and their network. The effectiveness of twin boundaries as a barrier to dislocation motion was calculated using strengthening contributions and a modified Hall-Petch relation. Residual burgers vector (RBV) of different boundaries was calculated to quantify the slip transmission. The average Taylor factor (TF) was calculated for selected twin-related domains (TRD) to understand the influence of the twin network on the ease of plastic deformation. The high-CSL sample exhibited sustained strain hardening and enhanced ductility, attributed to a higher barrier of twins and more uniform RBV of boundaries, respectively. CSL boundaries also showed lower remnant strain after tensile deformation as compared to other boundaries, indicating their ability for effective slip transfer. These results, along with EBSD and TEM micrographs for tensile fractured samples, provide mechanistic insights into dislocation-boundary interactions to achieve better strength-ductility synergy.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149893"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146147401","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":"Design and diffusion kinetics of cold-sprayed multilayer interlayers for low-temperature, short-time joining of SiC/GH3536","authors":"Gu Gong ,&nbsp;Weiyuan Yu ,&nbsp;Mingkang Wang ,&nbsp;Yanzhen Li ,&nbsp;Peng Liang","doi":"10.1016/j.msea.2026.149922","DOIUrl":"10.1016/j.msea.2026.149922","url":null,"abstract":"<div><div>To achieve reliable joining between SiC ceramics and a nickel-based superalloy and thereby fully exploit the respective performance advantages of both materials, a Ti/Cu/Ni/Cu/Ti multilayer interlayer was fabricated by cold spray and used for joining SiC to GH3536 alloy. The effects of joining temperature and holding time on the microstructure and mechanical properties of the joints were systematically investigated, and the joint formation mechanism was analyzed. The results indicate that a diffusion-couple structure formed within the cold-sprayed interlayer during the joining process. Compared with conventional binary diffusion-couple models based on the Darken equation and the Arrhenius equation, this structure significantly enhances interdiffusion of elements, thereby reducing the required joining temperature and holding time. Reliable joining was achieved at 900 °C with a holding time of 5 min, while a maximum shear strength of 63.94 MPa was obtained at 920 °C for 5 min. Further analysis reveals that the Cu-Ti liquid phase formed during joining promotes wetting and bonding, whereas the Ni layer acts as a stress-buffer layer, effectively alleviating residual stresses in the joint region. This study provides a new and efficient approach for joining SiC ceramics and their composites with nickel-based alloys, and offers new insights into the joining of ceramic–metal dissimilar materials.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149922"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403402","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":"Formation of fully columnar grains with <100> preferential orientation in IN718 superalloy laser metal deposition via CeO2 addition","authors":"Miao Sun ,&nbsp;Lei Wang ,&nbsp;Wenhua Guo ,&nbsp;Jianxun Zhang ,&nbsp;Bingheng Lu","doi":"10.1016/j.msea.2026.149933","DOIUrl":"10.1016/j.msea.2026.149933","url":null,"abstract":"<div><div>IN718 superalloy is a critical material for high-temperature structural components in aerospace engines, whose service performance is fundamentally influenced by its grain structure. Additive manufacturing has the potential to obtain fully columnar grains with preferred orientations, making it possible to design and rapidly manufacture oriented structural components for specific engineering applications. Accordingly, the regulation of columnar-grained microstructures has attracted sustained research interest. This study presents the first systematic investigation into the effect of CeO₂ addition on the microstructure and properties of IN718 superalloy fabricated by laser metal deposition (LMD), and reveals the mechanism by which CeO₂ promotes the formation of fully columnar grains. Industrial CT quantification shows that with 0.4-1.2 wt% CeO₂, the defect content is significantly reduced, achieving near-full densification; however, excessive addition (1.6 wt%) leads to crack formation. Metallographic and EBSD analyses confirm that CeO₂ induces a transition from randomly oriented grains to a fully columnar structure with a &lt;001&gt; preferred orientation. The key mechanism is that CeO₂ reduces the solidification rate, generating maximum undercooling along the deposition direction, which promotes directional growth of columnar grains, ultimately yielding a fully &lt;001&gt;-textured structure with a pole density of 17.91. The composite with 0.8 wt% CeO₂ addition achieves an optimal strength-ductility synergy in the XOY plane, featuring a tensile strength of 877.77 MPa, a yield strength of 609.03 MPa, and an elongation of 35.25%. Relative to the un-modified IN718 alloy, these mechanical properties represent increments of 32.37 MPa in tensile strength, 95.91 MPa in yield strength, and 3.75% in elongation, respectively. For the YOZ plane, the composite exhibits an 8% improvement in elongation (from 103.97% to 112.36%) while retaining high strength with a minimal loss of less than 30 MPa. This work offers technical insights into the precise control of the IN718 alloy microstructure, while also supporting for its efficient manufacturing and repair processes.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149933"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147403416","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":"Novel Nb-rich high entropy alloys strengthened by Laves phase for high-temperature applications","authors":"Yifan Liu,&nbsp;Yuxin Zhang,&nbsp;Li Wang,&nbsp;Bin Liu,&nbsp;Yong Liu","doi":"10.1016/j.msea.2026.149863","DOIUrl":"10.1016/j.msea.2026.149863","url":null,"abstract":"<div><div>The microstructure, room-temperature and high temperature compressive properties, as well as oxidation behavior of Nb-16Cr-16Ti-xAl-16Zr (2, 5, 16 at. %) alloys were systematically evaluated in this study. The results show that all alloys exhibit a dual-phase microstructure consisting of a BCC solid-solution matrix and a Laves phase. Decreasing the Al fraction promotes a C14-to-C15 Laves phase transformation and decreases its volume fraction, which together enhance high-temperature strength and deformability. Oxidation tests show that all the investigated alloys exhibit superior oxidation resistance compared with Nb521, with the 16Al containing alloy demonstrating the best performance due to the formation of a protective AlNbO₄-containing oxide scale. These findings can provide valuable insights for the design of advanced Nb-based alloys for high-temperature applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"955 ","pages":"Article 149863"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171640","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":"Plastic recovery and strength retention of cryogenic rolled pure Cu via high density electropulsing","authors":"Ziyi Han ,&nbsp;Chao Li ,&nbsp;Zishuai Chen ,&nbsp;Huiyan Ning ,&nbsp;Feng Li","doi":"10.1016/j.msea.2026.149902","DOIUrl":"10.1016/j.msea.2026.149902","url":null,"abstract":"<div><div>The matching of strength and plasticity is the key to realize the service of materials under complex stress fields. Due to the inherent low strength of pure Cu, the tensile strength (UTS) of the original pure Cu plate was significantly increased from 187.5 MPa to 378.6 MPa by cryogenic rolling (CR), but the work hardening induced by this process greatly reduced the plasticity of the material. In order to coordinate this contradiction, this paper first introduces high-density crystal defects into the material matrix through CR, and further uses high density electropulsing treatment to regulate the microstructure and optimize the comprehensive properties of the materials. The experimental results show that the yield strength (YS) of the electropulsing treatment after cryogenic rolling (CR + EPT) sample is 323.5 MPa, the UTS is 353.7 MPa, and the elongation (EL) is 10.3%. Compared with CR sample, the strength loss is less than 9%, while the EL is increased by about 98%, which achieves excellent control of the strength-plastic matching of pure Cu. Microstructure analysis revealed the relative uniformity of the distribution of texture components in the CR + EPT sample. The degree of dislocation tangle is alleviated, the proportion of Σ3 twin boundaries has increased. The in-depth analysis indicates that the introduction of electropulsing effectively retains the multi-level defect synergistic strengthening system generated by cryogenic rolling. At the same time, the intervention of electropulsing treatment provides additional driving force for the movement of partial dislocations, which reduces the overall free energy of the system.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"956 ","pages":"Article 149902"},"PeriodicalIF":7.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172766","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}