Journal of Materials Research and Technology-Jmr&t最新文献

{"title":"Effect of quenching temperature on the structure and properties of Cu-Zr-Al glassy ribbons","authors":"Lu Cao ,&nbsp;Hao-Ran Jiang ,&nbsp;Jochi Tseng ,&nbsp;Yi-Fan Gao ,&nbsp;Qing Wang ,&nbsp;Yan-Dong Jia ,&nbsp;Lina Hu ,&nbsp;Gang Wang","doi":"10.1016/j.jmrt.2025.03.114","DOIUrl":"10.1016/j.jmrt.2025.03.114","url":null,"abstract":"<div><div>Since the glass structure is inherited from the alloy melt, the thermal history experienced by the melt during cooling significantly influences the structure and properties of metallic glasses. In this work, the effect of melt quenching temperature on the atomic structure, thermophysical properties, and mechanical properties of a Cu-Zr-Al metallic glass is systematically investigated, using a combination of state-of-the-art techniques, including synchrotron-based high-energy X-ray diffraction and chip-based flash differential scanning calorimetry. It is found that for the studied Cu-Zr-Al alloy, the temperature window for preparing completely amorphous and contamination-free ribbons is remarkably narrow, spanning merely ∼150 K. This window is bounded by heterogeneous nucleation due to the unmelted nuclei at the lower limit and significantly increased O content due to severe chemical reactions at the higher limit. Furthermore, the glass transition, crystallization, thermal stability, and mechanical properties of the Cu-Zr-Al alloy are found to be highly sensitive to the melt temperature prior to quenching during melt-spinning. Two key factors—the disordering and homogenization effects—as well as the progressive enhancement of O contamination with increasing quenching temperature—are revealed to govern the structural and property evolutions. These findings provide valuable insights into tailoring glass structures and properties through the deliberate control of melt thermal history.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 272-283"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced strength and fracture features of tailings-based concrete reinforced with fibers and X-shaped rocks","authors":"Meilin Jiang ,&nbsp;Shuai Cao ,&nbsp;Erol Yilmaz","doi":"10.1016/j.jmrt.2025.03.118","DOIUrl":"10.1016/j.jmrt.2025.03.118","url":null,"abstract":"<div><div>The traditional room-and-pillar mining method benefits from the use of unclassified tailings-based concrete (UTC) to reinforce X-shaped broken pillars, offering advantages such as tailings utilization, reduced demand for sand aggregates, increased pillar strength, and improved stability of mined-out areas. This study investigates the influence of polypropylene (PP) fiber dosage (0 %, 0.3 %, 0.6 %, and 0.9 %) on the macro-strength and microstructure of fiber-reinforced UTC for reinforcing broken rock (F-UTCRR), and analyzes the toughening and crack resistance mechanisms of the fibers. Uniaxial compressive strength (UCS) test and SEM were employed to examine compressive and microstructural features of F-UTCRR. The results indicate that fiber dosage significantly affects the stress-strain behavior of F-UTCRR. As fiber content increases, both peak stress and strain first increase, then decrease, with the F-UTCRR-0.6 mixture exhibiting the highest compressive and deformation resistance, showing a 6.6 MPa rise in uniaxial strength and a 0.9 % rise in peak strain rate. At the macroscopic level, fiber concentration influences crack types, with the dominant crack pattern evolving from 'tension-tension-shear mixing-shear' as fiber content increases. The fibers primarily function through the bridging effect, inhibiting crack propagation. At the microscopic levels, fibers mainly compact the matrix and enhance the strength by bonding and interfacial friction behavior. Among the indexes in this paper, the performance advantage of F-UTCRR with 0.6 % fiber content is significant. Consequently, the findings of the research provide a theoretical foundation to explore strength and failure behavior of F-UTCRR, with significant practical implications for improving pillar damage resistance, extending pillar service life, maintaining roof plate stability in mining areas, and certifying employee/equipment's security.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 62-71"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comprehensive analysis of thermophysical properties of the NaNO3–KNO3 mixture with metastable phases","authors":"D. Sergeev ,&nbsp;G. Nénert ,&nbsp;D. Rapp ,&nbsp;F. Beckstein ,&nbsp;M. Schöneich ,&nbsp;M. Müller ,&nbsp;J. Gertenbach","doi":"10.1016/j.jmrt.2025.03.128","DOIUrl":"10.1016/j.jmrt.2025.03.128","url":null,"abstract":"<div><div>This study focuses on the comprehensive analysis of the NaNO₃–KNO₃ system, a salt mixture that is extensively used as a heat transfer fluid and thermal energy storage material in concentrated solar power (CSP) plants. Despite its common application, discrepancies exist in the reported equilibrium phase diagrams, largely due to the formation of metastable phases influenced by experimental conditions. This work combines various thermophysical methods, including differential scanning calorimetry, thermomechanical analysis, laser flash analysis, and high-temperature X-ray diffraction, to resolve these discrepancies. The thermal and structural properties of a 50 mol % NaNO₃ – 50 mol % KNO₃ mixture have been determined. Significant differences in phase transition temperatures and volume were observed between the first and second heating cycles. In-situ HTXRD confirmed the formation of metastable solid solution phases upon cooling to room temperature after the first heating. The comprehensive analysis provided insights into the equilibrium and metastable states of the mixture, highlighting the importance of combining thermal analysis techniques with XRD for a thorough characterization of material properties.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 561-569"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchically structured bi-continuous Mg–Ti interpenetrating-phase composites","authors":"Ming Zhang ,&nbsp;Zengqian Liu ,&nbsp;Shaogang Wang ,&nbsp;Jian Zhang ,&nbsp;Linlin Li ,&nbsp;Qiang Wang ,&nbsp;Yuquan Hao ,&nbsp;Zhengwang Zhu ,&nbsp;Zhefeng Zhang","doi":"10.1016/j.jmrt.2025.03.121","DOIUrl":"10.1016/j.jmrt.2025.03.121","url":null,"abstract":"<div><div>|Biological materials in nature demonstrate hierarchical 3D interpenetrating-phase structures, which contribute to their exceptional mechanical and functional properties. However, replicating these architectures into metallic materials remains a significant challenge. In this study, a series of Mg–Ti interpenetrating-phase composites with one, two, and three levels of structural hierarchy were fabricated using a combined approach of melt infiltration, liquid metal dealloying, and space holder addition. These composites exhibit a multimodal distribution of characteristic structural dimensions, with bi-continuous and mutually interpenetrated Mg and Ti phases across various length scales in 3D space. The compressive properties of these composites were investigated, and their Young's modulus was theoretically modeled based on the geometric characteristics and volume fractions of constituent phases. This study presents an effective approach for developing new high-performance interpenetrating-phase metal composites with hierarchical structures in bulk form.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 236-243"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic effect of boron and nitrogen on strength enhancement and anisotropy mitigation in Ti6Al4V fabricated via directed energy deposition","authors":"SeungHyeok Chung ,&nbsp;Jae Joon Kim ,&nbsp;Junghwan Kim ,&nbsp;Seungchan Cho ,&nbsp;Ho Jin Ryu ,&nbsp;Taegyu Lee","doi":"10.1016/j.jmrt.2025.03.113","DOIUrl":"10.1016/j.jmrt.2025.03.113","url":null,"abstract":"<div><div>Controlling the mechanical properties and microstructure anisotropies of additively manufactured Ti6Al4V alloys remains a challenge for improving their performance in demanding applications. Therefore, this study examined the effects of adding B and N on the microstructural evolution and mechanical properties of Ti6Al4V alloys fabricated using laser powder directed energy deposition (LP-DED). The SMART process, which is a novel composite powder fabrication method, was used to prepare feedstocks for LP-DED. This approach enabled control over the contents of B and N to optimize the microstructure and mechanical properties of the Ti6Al4V alloys. The addition of B resulted in effectively refined prior-β grains through constitutional supercooling and TiB precipitation. The addition of N resulted in the formation of a solid solution within the matrix without significant grain refinement. When B and N were added simultaneously, their individual roles in Ti6Al4V remained unchanged compared to their separate additions. However, the combined addition of B and N exhibited a synergistic effect, achieving a balanced improvement in both strength and elongation anisotropy. By deepening the understanding of B and N interactions in Ti alloys, these findings pave the way for a strategy to enhance structural reliability and suppress anisotropy in additively manufactured Ti6Al4V alloys for aerospace, automotive, energy, and biomedical applications.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 613-626"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bi-objective optimization of compressive strength and thermal conductivity for UN-U3Si2 composite fuel based on AI techniques","authors":"Tianyu Song ,&nbsp;Junkai Deng ,&nbsp;Rui Tang ,&nbsp;Hongxing Xiao ,&nbsp;Xiangdong Ding ,&nbsp;Jun Sun","doi":"10.1016/j.jmrt.2025.03.110","DOIUrl":"10.1016/j.jmrt.2025.03.110","url":null,"abstract":"<div><div>The UN-U₃Si₂ composite fuel has been developed as a promising accident-tolerant fuel (ATF) due to its superior thermal conductivity and higher uranium density compared to conventional UO₂. To further reduce accident risks, it is highly desirable to optimize the physical properties of ATF fuel, such as compressive strength (CS) and thermal conductivity (TC). Tailoring the microstructure offers an effective approach to achieving multi-objective optimization of the composite fuel, ensuring a balanced trade-off between key properties. In this study, a relationship between the microstructure of UN-U₃Si₂ composite fuel and the associated CS and TC was established via a convolutional neural network (CNN). To address the challenge of data insufficiency, a dataset of 15,000 microstructure-property pairs was generated through the high-throughput finite element method (FEM). Using reconstructed metallographic images as input, the CNN models achieved a prediction of the CS or TC within a relative error of 3 %. Moreover, critical features strongly correlated with the CS and TC of composites were identified through the saliency map method analysis and Pearson correlation coefficient (PCC) evaluation. Finally, a bi-objective optimization strategy was employed to design microstructures for UN-U₃Si₂ composite fuel pellets that effectively balance CS and TC properties. This work not only provides practical guidelines for designing advanced ATF fuels with improved performance but also introduces a robust workflow for the multi-objective optimization of composite materials with superior physical properties.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 424-434"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure evolution and mechanical properties of AZ31 magnesium alloy by ultra-high frequency transient induction heating","authors":"Jingkai Feng ,&nbsp;Jie Wang ,&nbsp;Pengfei Zhang ,&nbsp;Luyao Jiang ,&nbsp;Daliang Yu ,&nbsp;Fei Guo ,&nbsp;Xiting Zhong","doi":"10.1016/j.jmrt.2025.03.124","DOIUrl":"10.1016/j.jmrt.2025.03.124","url":null,"abstract":"<div><div>AZ31 magnesium alloy plate with excellent mechanical properties is quickly prepared by rolling and electromagnetic induction heating (REIH) in this study. After five cycles of electromagnetic induction heating (EIH), The plasticity of the magnesium sheet increased from 7.7 % to 12.5 %, while the strength remained relatively constant. The high strength can be attributed to the reduced in average grain size and the increased dislocation density. As the number of EIH cycles increases, dislocations are gradually distributed uniformly, crystal spacing is increased, rheological stresses on the (10–11) and (10–12) planes are reduced, and the &lt;c+a&gt; dislocation slip system is activated during deformation. The reason is that EIH generates an electric current (electron wind) in the rolled AZ31 magnesium alloy, causing electrons to collide with lattice atoms, thereby transferring momentum to the atoms and facilitating dislocation motion. This unique atomic diffusion path induces the change of the localized crystal structure and enhances texture strength. This offers a novel technological route for the fabrication of magnesium alloys with high strength and plasticity.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 751-761"},"PeriodicalIF":6.2,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of wear resistance in TC6 titanium alloy through a combined treatment of laser shock peening and nitrogen ion implantation at 300 °C","authors":"Yuliang Li ,&nbsp;Xiaoqing Liang ,&nbsp;Zhenyang Cao ,&nbsp;Huailin Zhang ,&nbsp;Mo Lang ,&nbsp;Cenchao Xie ,&nbsp;Sihai Luo ,&nbsp;Weifeng He","doi":"10.1016/j.jmrt.2025.03.115","DOIUrl":"10.1016/j.jmrt.2025.03.115","url":null,"abstract":"<div><div>The TC6 titanium alloy was subjected to a combined treatment of laser shock peening (LSP) followed by nitrogen ion implantation at 300 °C. The effects of this combined treatment on the microstructure, surface mechanical properties, and tribological behaviors of TC6 were evaluated. The TC6 alloy demonstrated a gradient distribution in grain size and elemental composition in its surface after the combined treatment. Compared to untreated TC6, the surface nano-hardness increased from 4.95 GPa to 7.08 GPa after nitrogen ion implantation at 300 °C, 5.91 GPa after LSP treatment, and 7.70 GPa after combined treatment. The surface residual stress changed from an initial tensile stress of 50.60 MPa to a compressive stress of 42.41 MPa after nitrogen ion implantation at 300 °C, 875.10 MPa after LSP, and 735.99 MPa after combined treatment. These changes in microstructure and surface mechanical properties were attributed to the synergistic effects of the combined treatment. For the tribological behavior, the wear rate of TC6 after combined treatment was the lowest among all states. The wear mechanism changed to milder adhesive wear from severe abrasive wear and adhesive wear in untreated state, which was attributed to the formation of nanocrystals and nitrides in the surface as well as the increase in surface dislocation density.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 203-216"},"PeriodicalIF":6.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143641821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of variations of metallurgical and morphological phenomena of interface in the magnetic pulse welding of Al–Cu","authors":"Morteza Sarvari,&nbsp;Amir Abdollah-zadeh,&nbsp;Homam Naffakh-Moosavy","doi":"10.1016/j.jmrt.2025.03.093","DOIUrl":"10.1016/j.jmrt.2025.03.093","url":null,"abstract":"<div><div>This study investigates the bonding interface characteristics, formation mechanisms of metallurgical bonds, and intermetallic compounds in Al–Cu joints produced by magnetic pulse welding (MPW) using an E-type coil. Welding was conducted at a discharge voltage of 16 kV and an air gap of 1 mm. Field-emission scanning electron microscopy (FE-SEM) analysis revealed that the bonding interface characteristics vary with increasing distance from the collision centerline. In addition, the X-ray diffraction (XRD) analysis identified the formation of intermetallic compounds of AlCu, AlCu₄ and Al₄Cu₉ at the bonding interface. The collision angle increases and collision energy decreases with distance from the centerline, resulting in two distinct zones: a high-shear zone near the collision centerline (Zone 1) and a low-shear zone near the bond edge (Zone 2). The AlCu intermetallic compound was predominantly formed in the high-shear zone, while AlCu₄ and Al₄Cu₉ were observed in the low-shear zone. The formation mechanism of these intermetallic compounds is attributed to solid-state diffusion, as no signs of melting were detected in the transition zones of the bonding interface, except in the porous zone. Additionally, the bonding interface exhibited higher strength compared to the base metals of Al and Cu.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 448-458"},"PeriodicalIF":6.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assess the interaction of water reducers and accelerators on the rheological and early hydration properties of cement-based materials","authors":"Pengfei Song ,&nbsp;Xuhao Wang ,&nbsp;Yuan Wang ,&nbsp;Jie Zhou ,&nbsp;Heping Qiu ,&nbsp;Arezoo Rahimi ,&nbsp;Jason Ingham","doi":"10.1016/j.jmrt.2025.03.046","DOIUrl":"10.1016/j.jmrt.2025.03.046","url":null,"abstract":"<div><div>Shotcrete is commonly used as the primary support material in tunnel construction, differing significantly from conventional cast-in-place concrete. The operational process of shotcrete construction involves two stages: pumping and spraying. From the perspective of admixtures, shotcrete requires water-reducing agents to ensure fluidity during pumping and accelerators to facilitate rapid hardening upon spraying. It is important to balance the performance of shotcrete in the two-stage process. This study utilized aluminum sulfate (AF) and sodium aluminate (AA) as the primary accelerators and polycarboxylate and naphthalene-based superplasticizers as water-reducing agents. A rheometer, isothermal calorimeter, low-field nuclear magnetic resonance (NMR), and scanning electron microscope (SEM) were used to systematically understand the early hydration process of cement paste. The setting time, rheological properties, hydration behavior and microstructure development were evaluated with the introduction of combination of various water-reducing agents and accelerators. The results indicate that polycarboxylate-based superplasticizers significantly enhance fluidity but delay hydration, particularly when combined with sodium aluminate accelerators, resulting in extended setting times and slower free water conversion into bound water. In contrast, aluminum sulfate accelerators induce higher early hydration heat, accelerating strength development but also increasing yield stress and plastic viscosity. The interaction between water reducers and accelerators creates a complex balance: while polycarboxylate superplasticizers improve workability, their presence alters hydration kinetics, influencing both hydration heat release and calcium hydroxide consumption. These findings quantitatively assess the interrelationship between rheology, hydration, and microstructure development in cement-based materials, providing a valuable reference for balancing workability and early performance in shotcrete applications.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"36 ","pages":"Pages 806-822"},"PeriodicalIF":6.2,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}