Jiaqi Xu, Junming Liu, Cheng Wang, Shixin Wen, Huaying Li, Yunan Huo, Huasen Guo, Hailong Wang
{"title":"Study on the preparation and properties of magnetic recyclable Bi2MoO6 composite photocatalyst","authors":"Jiaqi Xu, Junming Liu, Cheng Wang, Shixin Wen, Huaying Li, Yunan Huo, Huasen Guo, Hailong Wang","doi":"10.1007/s10853-026-13842-1","DOIUrl":"10.1007/s10853-026-13842-1","url":null,"abstract":"<div><p>Textile dyeing wastewater treatment remains challenging due to its complex components and high chromaticity. Herein, magnetic Bi<sub>2</sub>MoO<sub>6</sub>/CoFe<sub>2</sub>O<sub>4</sub> composites with different mass ratios were fabricated via a two-step solvothermal method. The 7.5 wt% composite (BC-7.5) delivered the optimal activity, achieving 99.9% RhB removal within 80 min under visible-light irradiation. Benefiting from the ferrimagnetic CoFe<sub>2</sub>O<sub>4</sub> component (Ms = 6.14 emu/g), BC-7.5 can be readily recovered by an external magnetic field and maintained an average degradation efficiency of 86.7% over five cycles. The enhanced performance is attributed to the nested type-I heterojunction combined with the interfacial built-in electric field and the internal magnetic field of the ferrite, which effectively suppress carrier recombination; radical-trapping experiments identified •O<sub>2</sub>⁻ as the dominant reactive species, followed by h⁺ and •OH. This work provides an efficient and magnetically recyclable Bi<sub>2</sub>MoO<sub>6</sub>/CoFe<sub>2</sub>O<sub>4</sub> photocatalyst for the remediation of dye-containing wastewater.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"34953 - 34970"},"PeriodicalIF":4.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Corrosion and passivation behavior of hot isostatically pressed CrMnFeCoNi high-entropy alloy in NaOH solutions","authors":"Shuwen Guo, Jiahao Liu, Dianchun Ju, Zhuo Chen, Chongxiang Yue, Han Ma, Zhanfang Wu","doi":"10.1007/s10853-026-13865-8","DOIUrl":"10.1007/s10853-026-13865-8","url":null,"abstract":"<div><p>This study evaluates the electrochemical corrosion behavior of the CrMnFeCoNi high-entropy alloy in NaOH solutions of various concentrations, with the aim of elucidating its passivation characteristics and localized corrosion behavior in alkaline environments. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), cyclic polarization, and Mott–Schottky analysis were conducted and complemented by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) characterization of the post-corrosion surfaces. The electrochemical results indicate that the stability and protective performance of the passive film progressively decrease with increasing NaOH concentration. The post-corrosion observations show a spatial association between localized surface attack and sulfide- and oxide-containing microstructural heterogeneities along prior particle boundaries, although the present measurements do not establish the site or sequence of corrosion initiation. Under the tested short-term room-temperature conditions, the lower-concentration NaOH solutions produced lower corrosion and passive current densities and higher interfacial impedance than the higher-concentration solutions. The chemical composition and valence states of the passive film were not directly determined in the present study; therefore, the possible roles of Cr- and Mn-containing surface species are discussed only as literature-informed interpretations. These findings characterize the electrochemical stability and localized breakdown behavior of the investigated HIP-consolidated alloy in alkaline environments. However, because no cast, wrought, or differently consolidated reference material was examined, the measured corrosion performance cannot be attributed to HIP itself.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35208 - 35228"},"PeriodicalIF":4.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Mastrorilli, F. Rizzi, P. Lasala, A. Grandolfo, G. Eramo, F. Olivieri, R. Castaldo, G. Gentile, M. Lavorgna, N. Depalo, E. Fanizza, M. L. Curri
{"title":"Pore-engineered mesoporous silica nanocarriers for sustainable, stimuli-responsive corrosion-inhibitor release","authors":"M. Mastrorilli, F. Rizzi, P. Lasala, A. Grandolfo, G. Eramo, F. Olivieri, R. Castaldo, G. Gentile, M. Lavorgna, N. Depalo, E. Fanizza, M. L. Curri","doi":"10.1007/s10853-026-13748-y","DOIUrl":"10.1007/s10853-026-13748-y","url":null,"abstract":"<div><p>Corrosion of metallic materials, particularly in heritage structures and concrete-based infrastructures, remains a persistent challenge, necessitating protection strategies that are effective, long-lasting, environmentally sustainable, and compatible with heterogeneous substrates. In this work, mesoporous silica nanoparticles (MSNs) were developed as pH-responsive nanocarriers, for controlled corrosion-inhibitor release. Two MSN architectures were synthesised: hexagonally ordered mesopores (MSNs-hex) and centre–radial hierarchical porosity (MSNs-CR), providing tunable loading capacity and release kinetics. Polyacrylic acid (PAA) and polyethylenimine (PEI) were employed pH-responsive polymer gatekeepers under acidic-to-neutral and alkaline conditions, respectively. Benzotriazole (BTA), used as a conventional corrosion inhibitor, and caffeine (CAFF; 1,3,7-trimethylxanthine), selected as an environmentally more benign alternative, were loaded into the nanocarriers, and their release behaviour was systematically investigated. MSNs-CR architectures achieved higher inhibitor loading than MSNs-hex, approximately 6.5 and 1.3 wt%, respectively, confirming the enhanced cargo capacity of the hierarchical architecture. Functionalisation with PAA or PEI enabled pH-dependent release under neutral and alkaline conditions, respectively, with PEI-gated MSNs-CR releasing nearly 90% of both inhibitors over 48 h at pH 11. BTA and CAFF displayed comparable normalised release profiles, although a lower absolute amount of CAFF was incorporated and retained. Preliminary ageing tests on bronze showed a stronger protective effect for BTA, while CAFF still reduced surface oxidation relative to the uncoated aged substrate. Overall, this study establishes a versatile, stimuli-responsive platform integrating hierarchical pore engineering and polymer gating to control inhibitor loading and release, with promising potential for sustainable corrosion-protection applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35035 - 35056"},"PeriodicalIF":4.4,"publicationDate":"2026-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-026-13748-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. L. Meisner, F. A. D’yachenko, M. G. Ostapenko, S. N. Meisner, A. B. Markov, E. V. Yakovlev, P. P. Kiziridi, A. V. Solovyov
{"title":"Comparative analysis of Ti–6Al–4V surface modification under axially symmetric and radially converging electron–beam irradiation configurations","authors":"L. L. Meisner, F. A. D’yachenko, M. G. Ostapenko, S. N. Meisner, A. B. Markov, E. V. Yakovlev, P. P. Kiziridi, A. V. Solovyov","doi":"10.1007/s10853-026-13825-2","DOIUrl":"10.1007/s10853-026-13825-2","url":null,"abstract":"<div><p>The study presents the results of comparative research on the effect of various configurations (including axially symmetric and radially converging geometries) of pulsed irradiation with a low-energy, high-current electron beam, with similar irradiation parameters (energy density <i>E</i><sub><i>s</i></sub> ≈ 3.7 J/cm<sup>2</sup>, pulse duration τ ≈ 2–3 μs, number of pulses <i>n</i> = 10) on the phase structural, elastic stress states, and textural effects in the surface layers of the Ti-6Al-4V alloy. It has been demonstrated that electron beam treatment of Ti-6Al-4V alloy surfaces with varying irradiation geometries results in the formation of modified surface layers that exhibit distinctly different structural (phase composition, crystallographic texture) and mechanical (hardness, ductility) characteristics. Explanations for the physical causes of these differences are proposed. It has been demonstrated that electron beam treatment of the Ti-6Al-4V alloy surface in an axially symmetric geometry (where the electron beam is directed perpendicular to the treated surface) results in the hardening of the surface layer with high levels of compressive stresses perpendicular to the treated surface. Conversely, electron beam surface treatment of this alloy in a radially converging geometry results in a reduction in hardness and an enhancement in ductility of the modified surface layer, even when compared to its initial values.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35116 - 35144"},"PeriodicalIF":4.4,"publicationDate":"2026-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gang Yu, Haohao Zou, Huadong Ye, Lanting Feng, Ying Han, Xu Ran
{"title":"Fabrication, microstructure, and properties of (NbTi)C particle-reinforced copper matrix composites","authors":"Gang Yu, Haohao Zou, Huadong Ye, Lanting Feng, Ying Han, Xu Ran","doi":"10.1007/s10853-026-13840-3","DOIUrl":"10.1007/s10853-026-13840-3","url":null,"abstract":"<div><p>(NbTi)C particles were prepared by mechanical alloying combined with heat treatment, and Cu matrix composites with different (NbTi)C contents were fabricated by fast hot-press sintering under a low-vacuum environment (10 Pa). The microstructure and structural characteristics of the composites were characterized, and their physical and mechanical properties were evaluated. The results show that, with increasing (NbTi)C particle content, the hardness gradually increased, the ultimate tensile strength first increased and then decreased, whereas the elongation, electrical conductivity, and thermal conductivity gradually decreased. When the (NbTi)C content was 5 wt%, the ultimate tensile strength reached 363.19 MPa, which was 28.8% higher than that of pure Cu, while the room-temperature thermal conductivity remained above 280 W·m<sup>−1</sup>·K<sup>−1</sup>. The strengthening of the composites was mainly attributed to grain refinement, particle strengthening, and load transfer, whereas the decreases in electrical and thermal conductivities were associated with enhanced electron and phonon scattering at particles, grain boundaries, and interfaces. These results indicate that an appropriate (NbTi)C content can improve the mechanical properties of Cu while maintaining acceptable electrical and thermal conductivities. These findings provide a theoretical basis for designing Cu matrix composites with a high-strength and high-conductivity combination.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35189 - 35207"},"PeriodicalIF":4.4,"publicationDate":"2026-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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, performance and underlying mechanisms of single and mixed sols in thermal insulation fiber composites","authors":"Fei Yu, Shujing Li, Yuanbing Li, Hailu Wang, Tianyi Yuan, Danyang Qiu, Bo Yin","doi":"10.1007/s10853-026-13867-6","DOIUrl":"10.1007/s10853-026-13867-6","url":null,"abstract":"<div><p>Inorganic fiber-based insulation materials are widely utilized in high-temperature industrial applications, aerospace, and energy systems due to their excellent thermal stability, low density, and tailorable microstructural characteristics. However, achieving an optimal balance between room-temperature mechanical integrity and high-temperature insulation performance remains a critical challenge, particularly when selecting suitable binder systems. In this study, inorganic fiber-based insulation boards were fabricated via mechanical compression molding to systematically evaluate the effects of silica sol and alumina sol as binders on material properties. The influence of mixed sol ratios (alumina/silica) on the structural and functional performance of the fiberboards was further investigated. The results demonstrate that fiberboards prepared with alumina sol exhibit significantly enhanced physical properties at room temperature, with compressive strength increases ranging from 74.6% to 331.0% compared to those using silica sol. Conversely, the alumina-based boards show reduced high-temperature stability and thermal insulation performance. By employing mixed sol systems, the complementary advantages of both binders can be partially integrated. With increasing alumina sol content in the hybrid system, the microstructure and overall performance progressively approach those of the pure alumina system. Accordingly, this study establishes that tailoring the type and proportion of composite sol enables directional property design for fiberboards, thereby providing a viable strategy to meet specific application requirements across diverse thermal environments.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"34971 - 34987"},"PeriodicalIF":4.4,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Highly efficient molecular trap engineering in cycloolefin copolymers for high-temperature capacitive energy storage","authors":"Mengjia Feng, Yandong Liu, Jianzeng Guo, Chaoyue Zhao, Sitong Li, Mai Hao, Yunqi Xing","doi":"10.1007/s10853-026-13787-5","DOIUrl":"10.1007/s10853-026-13787-5","url":null,"abstract":"<div><p>Cycloolefin copolymer (COC) dielectrics exhibit immense potential for capacitive energy storage, yet their practical application is severely hindered by escalated high-temperature conduction loss and the fundamental trade-off between dielectric polarization and insulation capability. Herein, a highly efficient molecular-trap engineering strategy is proposed by incorporating trace amounts of conjugated anthracene (AN) molecules into a wide bandgap (Eg) COC matrix. Driven by the pronounced energy-level mismatch between the polymer host and AN dopants, customized localized deep electron traps (~1.25 eV) are constructed. Under coupled electro-thermal stresses, this tailored electronic landscape efficiently captures nonequilibrium hot carriers, effectively suppressing long-range hopping transport and significantly reducing conduction loss. Consequently, the optimized AN0.4 composite film delivers a discharge energy density (Ud) of 4.32 J cm-3 at 150°C while maintaining an ultrahigh charge–discharge efficiency (η) of over 95%. In addition, the film exhibits a high power density and excellent cycling stability over 5×104 charge–discharge cycles. This molecular trapping strategy offers a promising pathway to synergistically suppress charge transport while preserving dielectric polarization, providing a universal design paradigm for high-temperature polymer capacitors.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"34988 - 34998"},"PeriodicalIF":4.4,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ester Kelly Starick Pellegrino, Sebastião Bruno Vilas Boas, Antonio Augusto Araújo Pinto da Silva, Lucas Moreira Ferreira, Maria Ismenia Sodero Toledo Faria, Gilberto Carvalho Coelho, Carlos Angelo Nunes
{"title":"Liquidus projection of the cobalt-rich Co–Si–B system","authors":"Ester Kelly Starick Pellegrino, Sebastião Bruno Vilas Boas, Antonio Augusto Araújo Pinto da Silva, Lucas Moreira Ferreira, Maria Ismenia Sodero Toledo Faria, Gilberto Carvalho Coelho, Carlos Angelo Nunes","doi":"10.1007/s10853-026-13756-y","DOIUrl":"10.1007/s10853-026-13756-y","url":null,"abstract":"<div><p>Cobalt-rich amorphous metallic alloys (AMAs) are highly valued for their superior magnetic properties and corrosion resistance in high-precision applications. However, the development of these metastable systems is often hindered by a lack of fundamental thermodynamic data, particularly regarding the crystalline phases that compete with glass formation. This study investigates the phase equilibria of the Co-rich region of the Co–Si–B ternary system to propose a comprehensive liquidus projection. A series of Co–Si–B alloys were synthesized via arc melting and characterized in the as-cast state using XRD, SEM-BSE, EDS, and EBSD. The experimental results enabled the identification of ten primary precipitation fields, including <span>(CoB, C{o}_{2}B, alpha C{o}_{2}Si, CoSi)</span>, and the ternary <i>Co</i><sub>4.75</sub><i>Si</i><sub>2</sub><i>B</i> phase and the determination of several monovariant lines and ternary invariant reactions. Key findings include the identification of three thermal maxima (m1, m2, m3) along monovariant lines and the characterization of the Co<sub>4.75</sub>Si<sub>2</sub>B ternary phase, which was found to form via an incongruent peritectic reaction (<span>(L + alpha Co_{2} Si Leftrightarrow Co_{{4.75}} Si_{2} B)</span>). Furthermore, the solidification paths of various alloys were traced to map the trajectories toward ternary eutectic points. The resulting <i>liquidus</i> projection provides a critical experimental framework for predicting solidification behavior and enhancing the manufacturing of Co-based metallic glasses.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35057 - 35069"},"PeriodicalIF":4.4,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10853-026-13756-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shihang Wu, Fugeng Wu, Jinbing Zhang, Jun Ji, Wanli Zhang, Wenbo Luo, Wentao Shao, Yuanfu Chen
{"title":"Review: diamond heterogeneous integration for thermal management—integration strategies and advanced packaging","authors":"Shihang Wu, Fugeng Wu, Jinbing Zhang, Jun Ji, Wanli Zhang, Wenbo Luo, Wentao Shao, Yuanfu Chen","doi":"10.1007/s10853-026-13776-8","DOIUrl":"10.1007/s10853-026-13776-8","url":null,"abstract":"<div><p>The increasing power density of advanced semiconductor devices and three-dimensional integrated systems has made thermal management a key challenge for next-generation electronics. Owing to its ultrahigh thermal conductivity, excellent electrical insulation, and outstanding thermo-mechanical stability, diamond has become a promising material for heat dissipation and heterogeneous integration. Existing reviews mainly focus on isolated topics, such as thermal interface materials, bonding technologies, or individual device applications. This review provides a comprehensive framework that connects diamond material fundamentals, thermal transport theory, heterogeneous integration strategies, semiconductor platforms, and advanced packaging. We first introduce the fundamentals of diamond and the theory of thermal boundary resistance, and then discuss key integration methods and recent progress in diamond integration with Si, GaN, SiC, and β-Ga<sub>2</sub>O<sub>3</sub>. Then we summarize diamond-based packaging technologies, including heat sinks, microchannels, through-diamond vias, and diamond interposers. Finally, we highlight future directions in wafer-scale manufacturing, advanced packaging, and system-level thermal design. By connecting materials, devices, and packaging, this review provides useful guidance for developing next-generation high-performance thermal management solutions for advanced semiconductor systems.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"34449 - 34505"},"PeriodicalIF":4.4,"publicationDate":"2026-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhongtang Gao, Qihang Bi, Ya Liu, Teng Cao, Jiahao Yang, Yuan Yu, Zhiming Gao, Guanghai Bai
{"title":"Thermal evolution of hydrides and subsequent mechanical response in hydrogen-charged zirconium alloys","authors":"Zhongtang Gao, Qihang Bi, Ya Liu, Teng Cao, Jiahao Yang, Yuan Yu, Zhiming Gao, Guanghai Bai","doi":"10.1007/s10853-026-13800-x","DOIUrl":"10.1007/s10853-026-13800-x","url":null,"abstract":"<div><p>C7 zirconium alloy hydrogen-charged to 800 ppm was annealed at 470 °C, 490 °C and 510 °C for 3 h to evaluate the effects of annealing on hydrogen-induced damage and mechanical performance. The effects of annealing temperature on hydride morphology, microstructural evolution and tensile properties were systematically investigated. Hydride morphology and matrix microstructure were characterized by SEM-BSE and EBSD, respectively, and circumferential tensile tests were conducted at room temperature and 350 °C. Fine plate-like and strip-like hydrides were observed after annealing at 470 °C, with a banded but non-segregated distribution. Hydrides coarsened and aggregated markedly at 490 °C, forming continuous or semi-continuous layers along grain boundaries and interconnected networks within grains, coinciding with a lower recrystallized fraction. The hydride distribution became more discontinuous and homogeneous at 510 °C, with acicular hydrides observed after cooling, consistent with possible partial dissolution during annealing followed by re-precipitation during cooling. Room temperature tensile tests showed that among the annealed conditions, 510 °C produced the highest elongation to failure of 32.42% and ductile-dominated mixed fracture. During tensile testing at 350 °C, the ultimate tensile strength was only slightly affected by annealing temperature, whereas the highest elongation of 41.31% was obtained after annealing at 490 °C, likely reflecting the combined effects of the retained substructured matrix, hydride distribution, and enhanced plastic deformation at 350 °C. Overall, among the annealing conditions examined, 510 °C for 3 h provided the most favorable balance of room temperature ductility, microstructural homogeneity, and strength in hydrogen-charged C7 zirconium alloy.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"61 44","pages":"35096 - 35115"},"PeriodicalIF":4.4,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149162964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}