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

{"title":"Effect of super-solidus heat treatments on microstructure and homogenization of CMSX-4 plus single crystal nickel-based superalloy","authors":"Inmaculada López-Galilea,&nbsp;Lisa Hecker,&nbsp;Sebastian Weber","doi":"10.1016/j.jmrt.2025.12.128","DOIUrl":"10.1016/j.jmrt.2025.12.128","url":null,"abstract":"<div><div>The development of advanced single crystal Ni-based superalloys with high refractory element content has enabled significant improvements in high-temperature mechanical properties but has also introduced challenges related to chemical segregation and microstructural heterogeneity in as-cast materials. Conventional solution annealing heat treatments for homogenization are lengthy and can increase porosity, limiting the practical application of these alloys. This study systematically investigates the effects of isothermal super-solidus and super-solidus hot isostatic pressing heat treatments on the microstructure and chemical homogenization of the third-generation single crystal Ni-based superalloy CMSX-4 Plus. Phase transformation temperatures were determined using differential scanning calorimetry and thermodynamic calculations to guide the selection of super-solidus heat treatment parameters. Microstructural evolution, porosity, and chemical segregation were characterized by advanced electron microscopy and energy-dispersive X-ray spectrometry, while DICTRA kinetic simulations provided complementary insights. Super-solidus heat treatments were found to promote rapid dissolution of eutectic regions and substantial reduction of chemical segregation, with homogenization strongly dependent on temperature and holding time. The optimized super-solidus hot isostatic pressing process, comprising two holding stages at 1345 °C and 1350 °C under 100 MPa isostatic pressure, achieved near-complete elimination of porosity and residual eutectics, while preserving the single crystal structure, in a fraction of the time required by conventional treatments. These findings establish a scientific and practical foundation for accelerated homogenization of high-refractory-content single crystal superalloys, supporting improved processing efficiency and microstructural quality in advanced turbine applications.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 1323-1336"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145791299","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":"Simulation of temperature on the wettability behavior of diamond/Cu-based filler alloys during brazing process","authors":"Hu Yang ,&nbsp;Guoqin Huang ,&nbsp;Yangli Xu ,&nbsp;Wenhan Zeng ,&nbsp;Xipeng Xu","doi":"10.1016/j.jmrt.2025.12.117","DOIUrl":"10.1016/j.jmrt.2025.12.117","url":null,"abstract":"<div><div>Ordered arrangement brazed diamond tools offer enhanced machining efficiency by enabling controlled distribution and exposure height of diamond. However, during the brazing process, variations in process parameters can affect the wettability between the brazing alloy and diamond, resulting in different brazing morphologies. In this study, a computational fluid dynamics (CFD)-based brazing simulation model was built to investigate the effects of temperature and heating rate on exposure height of Cu–20Sn–10Ti alloy and displacement of diamond. The simulation and experimental results both demonstrate that with the increase of temperature, the exposure height of diamond decreases gradually, while the change of particle spacing increases due to excessive wetting. With the increase of heating rate, the exposure height increases first and then decreases, while the change of particle spacing is opposite. The brazing alloy undergoes three stages: solid state, solid-liquid coexistence state and complete liquid state. In the complete liquid state stage, the wettability behavior between alloy and diamond significantly impacts capillary force and interfacial bonding force, which ultimately determine the exposure height and displacement of diamond. To ensure a higher diamond exposure height and reduced particle displacement of the diamond conditioner applied in the semiconductor industry, the optimized brazing temperature is 880 °C and the heating rate is 5 °C/min. This study advances the understanding of wetting-driven morphological evolution of the brazing alloy during vacuum brazing, and provides a scientific basis for optimizing temperature and heating rate to manufacture high-performance ordered arrangement diamond tools.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 1226-1240"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145791301","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":"Complex modulus driven low-frequency broadband sound absorption of acoustic functional composite material with transversely gradient-embedded SMA wires and optimization","authors":"Yi-Zhe Huang ,&nbsp;Xi-Peng Luo ,&nbsp;Xi-Yue Hu ,&nbsp;Zi-Yi Liu ,&nbsp;Bin Huang ,&nbsp;Chi Cai ,&nbsp;Qi-Bai Huang ,&nbsp;Zhi-Fu Zhang","doi":"10.1016/j.jmrt.2025.12.080","DOIUrl":"10.1016/j.jmrt.2025.12.080","url":null,"abstract":"<div><div>This paper proposes a novel SMA rubber-based underwater acoustic functional composite material aimed at extending the lower frequency limit of sound absorption and enhancing broadband absorption bandwidth. Shape memory alloy (SMA) improves the pressure resistance of the anechoic coating. Additionally, its phase transition characteristics create a new energy dissipation channel for the rubber-based composite material by introducing additional strain and hysteretic loss through stress-induced phase transformation. Furthermore, the acoustic anechoic coating with transversely embedded SMA wires in a rubber layer containing conical cavities is developed. Using the Global Transfer Matrix Method (TMM) in combination with microstructural and gradient layering methods, the sound absorption coefficient curves of the coating at different frequencies are obtained. Through COMSOL finite element simulations and underwater acoustic tube experiments, the following findings are validated: (1) the correctness of the theoretical model, (2) the effectiveness of the novel structure in low-frequency sound absorption, with the lower frequency limit of the 0.7 absorption bandwidth significantly reduced from 730 Hz to 530 Hz, (3) the excellent pressure-enhancing effect of the transversely embedded SMA wires under static water pressure. Moreover, the influence of parameters including thickness, SMA volume fraction, and cavity radius on acoustic performance is analyzed. Based on this analysis, a multi-objective optimization is achieved using the Partial Least Squares (PLS) surrogate model and Differential Evolution (DE) algorithm, further lowering the lower frequency limit to 320 Hz. In conclusion, the novel composite anechoic coating demonstrates excellent global performance in broadband sound stealth characteristics.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 1145-1168"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145791373","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":"Predictive modeling and optimization of geometrical characteristics in coaxial laser cladding of Fe-based powder on nodular cast iron","authors":"Majid Valehi ,&nbsp;Masoud Mosallaee ,&nbsp;Abdollah Saboori","doi":"10.1016/j.jmrt.2025.12.016","DOIUrl":"10.1016/j.jmrt.2025.12.016","url":null,"abstract":"<div><div>This study systematically investigates the influence of laser power, scanning speed, and powder feed rate on the geometrical characteristics of Fe-based coatings deposited on nodular cast iron via coaxial laser cladding. A series of controlled experiments were conducted to evaluate clad height, width, penetration depth, dilution, and wetting angle. Linear regression analysis was employed to establish predictive relationships between process parameters and geometrical responses, achieving high correlations (R² ≥ 0.81). The most reliable combined parameters were identified as <span><math><mrow><msup><mi>P</mi><mrow><mn>5</mn><mo>/</mo><mn>6</mn></mrow></msup><msup><mi>F</mi><mrow><mn>5</mn><mo>/</mo><mn>3</mn></mrow></msup><msup><mi>S</mi><mrow><mo>−</mo><mn>9</mn><mo>/</mo><mn>8</mn></mrow></msup></mrow></math></span> for clad height, <span><math><mrow><msup><mi>P</mi><mrow><mn>2</mn><mo>/</mo><mn>3</mn></mrow></msup><msup><mi>S</mi><mrow><mo>−</mo><mn>1</mn><mo>/</mo><mn>4</mn></mrow></msup></mrow></math></span> for width, <span><math><mrow><msup><mi>P</mi><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msup><msup><mi>F</mi><mrow><mo>−</mo><mn>1</mn><mo>/</mo><mn>3</mn></mrow></msup><msup><mi>S</mi><mrow><mo>−</mo><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></mrow></math></span> for penetration depth, <span><math><mrow><msup><mi>F</mi><mrow><mo>−</mo><mn>1</mn><mo>/</mo><mn>3</mn></mrow></msup><msup><mi>S</mi><mrow><mn>1</mn><mo>/</mo><mn>9</mn></mrow></msup></mrow></math></span> for dilution, and <span><math><mrow><msup><mi>P</mi><mrow><mn>1</mn><mo>/</mo><mn>9</mn></mrow></msup><msup><mi>F</mi><mn>2</mn></msup><msup><mi>S</mi><mrow><mo>−</mo><mn>2</mn><mo>/</mo><mn>3</mn></mrow></msup></mrow></math></span> for wetting angle. The findings indicate that powder feed rate and scanning speed predominantly govern the clad geometry, whereas laser power exerts a secondary yet consistent effect. A processing map was developed to define the optimal operating window, showing that maintaining dilution between 10 and 40 % and wetting angles below 80° yields dense, defect-free coatings with strong metallurgical bonding. The established predictive models and process map provide a robust basis for process optimization, enabling precise control over clad geometry and enhancing coating integrity in laser cladding applications on cast iron substrates.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 138-147"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685610","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":"Characterization of microstructure, mechanical properties, and degradation behavior of Mg–Zn–Y alloys: A comparative study of as-cast and heat-treated states","authors":"Ali Sharifi,&nbsp;Mohammad Asadollahi,&nbsp;Reza Alizadeh,&nbsp;Hossein Aashuri","doi":"10.1016/j.jmrt.2025.11.257","DOIUrl":"10.1016/j.jmrt.2025.11.257","url":null,"abstract":"<div><div>Mg–Zn–Y alloys containing less than 4 wt% of alloying elements show desirable mechanical properties and corrosion resistance. However, limited systematic research has been conducted on alloys with lower alloying contents and different Zn/Y ratios, and the effects of heat treatment on their properties remain poorly understood, requiring further investigation. This study investigates the effects of varying Zn/Y ratio and solution heat treatment on the microstructure, mechanical properties, and corrosion behavior of Mg–<em>x</em>Zn–<em>y</em>Y alloys, where (<em>x</em>,<em>y</em>): (1,1), (2,1), (2,2), (3,1). The microstructure of alloys was examined by optical microscopy, field-emission electron microscopy and <em>X</em>-ray diffraction. Hydrogen evolution, polarization, and electrochemical impedance spectroscopy tests were also used to evaluate the corrosion behavior of the alloys. Furthermore, the mechanical properties of the samples were evaluated by the shear punch test. Microstructural analysis of all as-cast alloys revealed a dendritic structure containing <em>W</em> and LPSO precipitates. The as-cast Mg–1Zn–1Y and Mg–2Zn–2Y alloys exhibited a ternary eutectic structure of the LPSO and <em>W</em> phases. However, the as-cast Mg–2Zn–1Y and Mg–3Zn–1Y alloys with larger Zn/Y ratios showed the discrete <em>W</em> and <em>I</em> phases, along with a reduced LPSO phase content. Heat treatment across all alloys led to grain coarsening and partial dissolution of precipitates. The as-cast Mg–1Zn–1Y and Mg–2Zn–2Y alloys demonstrated superior corrosion resistance, with polarization current densities of 3.65 μA/cm² and 3.18 μA/cm², respectively, compared to Mg–2Zn–1Y (5.12 μA/cm²) and Mg–3Zn–1Y (4.18 μA/cm²), due to their continuous LPSO that form a uniform and pseudo-passive layer on the sample and shield the <em>W</em> phase from corrosion in the ternary eutectic structure. Furthermore, heat treatment improved the corrosion resistance of all alloys by reducing microstructural defects, homogenizing second-phase distribution, and partially dissolving galvanically active <em>W</em> and <em>I</em> precipitates. Mechanical analysis demonstrated that the as-cast Mg–2Zn–2Y alloy achieved superior mechanical properties with an ultimate shear strength of 123.8 MPa, attributable to its refined structure and high volume fraction of second phases.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 111-127"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the magnetic properties of Nd–Fe–B sintered magnets by the grain boundary diffusion of Pr-LRE-Tb-Cu-Al (LRE = None, La, Nd, and Ce) alloys using stamp coating","authors":"Dong Hyun Lee ,&nbsp;Seong Chan Kim ,&nbsp;Hyeonjong Jeong ,&nbsp;Vitalii Galkin ,&nbsp;Jung Woo Ha ,&nbsp;Juyoung Baek ,&nbsp;Tae-Young Yun ,&nbsp;Jong Tae Kim ,&nbsp;Seok-Hwan Chung ,&nbsp;Sumin Kim ,&nbsp;Donghwan Kim ,&nbsp;Sang Hyub Lee ,&nbsp;Jong Wook Roh ,&nbsp;Dong Hwan Kim ,&nbsp;Jeongmin Kim","doi":"10.1016/j.jmrt.2025.12.041","DOIUrl":"10.1016/j.jmrt.2025.12.041","url":null,"abstract":"<div><div>Nd–Fe–B sintered magnets exhibit a high maximum energy product and have been utilized in a wide range of applications. Herein, we report that the stamp coating method using powder-type diffusion sources improves the magnetic properties of Nd–Fe–B sintered magnets through the grain boundary diffusion (GBD) process. Compared with the conventional dip-coating method based on slurry-type diffusion sources, stamp coating provided a comparable coercivity improvement with simplified processing. Based on the stamp coating method, diffusion sources in which 80 wt% of heavy rare-earth (HRE) elements were substituted with light rare-earth (LRE) elements and transition metals were investigated. The Pr₆₀Tb₂₀Cu₁₅Al₅-GBD magnet exhibited magnetic properties comparable to those of a pure Tb-GBD magnet, while significantly reducing Tb usage. Moreover, in pursuit of a more cost-effective diffusion source, Pr₄₀LRE₂₀Tb₂₀Cu₁₅Al₅-GBD magnets (LRE = La, Nd, Ce) with the additional partial substitution of expensive Pr were evaluated. The increase in coercivity per Tb usage (kOe/wt.% Tb) of the Pr₆₀Tb₂₀Cu₁₅Al₅- and Pr₄₀LRE₂₀Tb₂₀Cu₁₅Al₅-GBD magnets (∼20 kOe/wt.%) were considerably higher than those of Tb₁₀₀-GBD magnets (6.4 kOe/wt.%). Furthermore, the Tb-reduced GBD magnets showed improved thermal stability compared to that of the Tb-GBD magnet. These findings demonstrate that the cost of the GBD process can be effectively reduced through stamp coating and the substitution of costly HRE and LRE elements, thereby providing a promising strategy for the development of high-performance Nd–Fe–B sintered magnets.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 128-137"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685609","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":"High-throughput explosive welding of multimetallic coatings on Mg–Li alloys: Interfacial mechanisms and performance insights","authors":"Qichao Tian ,&nbsp;Yanwei Liu ,&nbsp;Li Liang ,&nbsp;Shangming Chen ,&nbsp;Jianan Zhou ,&nbsp;Ning Luo ,&nbsp;Shengquan Fu ,&nbsp;Yubin Hu ,&nbsp;Yifan Shi ,&nbsp;Jiangjing Wu ,&nbsp;Xiangtian Shen ,&nbsp;Yueguang Wei","doi":"10.1016/j.jmrt.2025.11.255","DOIUrl":"10.1016/j.jmrt.2025.11.255","url":null,"abstract":"<div><div>Magnesium–lithium (Mg–Li) alloys are promising ultra-light structural materials but suffer from low surface hardness and poor corrosion resistance. Here we develop a high-throughput explosive welding (HT-EXW) configuration that joins many dissimilar metals to a single LZ91 Mg–Li plate in spatially separated regions during one detonation, enabling parallel weldability evaluation under identical loading conditions. A layer of ANFO explosive (∼40 mm, detonation velocity ≈ 2300 m s⁻¹), Ti confinement plates and a 2 mm stand-off distance are used to bond sixteen commercially pure metal foils (∼0.1 mm thick), spanning a wide range of melting temperatures and thermophysical properties. Cross-sectional observations reveal a transition from nearly planar Mg–Li/metal interfaces for high-melting-point flyers to pronounced wavy and locally melted interfaces for low-melting-point flyers. EBSD and EDS analyses of a representative Ta/LZ91 joint show equiaxed Ta grains with interfacial refinement and a thin (∼5 μm) asymmetric mixing layer, indicating a mixed solid-state and local-melt bonding mechanism. Quantitative analysis of the melting zones demonstrates that the atomic ratio of flyer main element to base main element (FME/BME) decreases monotonically with flyer melting temperature and can be described by an inverse-square relation k/(FMT)². Microhardness measurements show that the minimum joint-region hardness remains above ∼75 % of the original flyer hardness, and most joints are harder than the Mg–Li substrate. Supplementary EBSD results on the Ti/Ti composite plate reveal a shock-induced gradient microstructure, implying near-interface strengthening in the confinement plates. These findings establish HT-EXW as a practical tool for high-throughput screening and mechanistic study of individual metal/Mg–Li explosive welds.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 388-399"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738749","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 properties in thixoformed Al–Si–Cu–Mg alloy: An EBSD-based study","authors":"S. Samat ,&nbsp;M.Z. Omar ,&nbsp;I.F. Mohamed ,&nbsp;A.H. Baghdadi ,&nbsp;M.A. Gebril","doi":"10.1016/j.jmrt.2025.12.036","DOIUrl":"10.1016/j.jmrt.2025.12.036","url":null,"abstract":"<div><div>Thixoforming process is an advanced semisolid metal processing (SSM) technique with significant potential to enhance the mechanical performance of structural components. While it offers benefit through grain refinement, the process introduces localized shear-induced strain, microsegregation, and microstructural non uniformity. This study evaluates an Al–Si–Cu–Mg alloy produced by gravity casting (GC), thixoforming (Thixo), and thixoforming with T6 treatment (Thixo-T6). Microstructures were characterised by optical microscopy (OM) for overall grain morphology and electron backscatter diffraction (EBSD) for quantitative grain size, grain-boundary misorientation, and crystallographic texture. The results show remarkable grain refining primary α-Al in Thixo alloy, changing from an anisotropic dendritic network to a fine, equiaxed, and more isotropic globular structure. The local misorientation reported high Kernel Average Misorientation (KAM ≥1.5°) after the thixoforming as the result from the semi-solid shear and spheroidisation form in high fraction of low angle grain boundary (LAGB) subgrains and strain dislocation that produce lattice curvature, accordingly, which improved from 1.1 % in GC and 8.3 % in Thixo alloy. High geometrically necessary dislocations (GND) density was attained after thixoforming and generate more resistance to plastic flow. In addition, X-ray diffraction (XRD) identifies Al₂Cu-series precipitates consistent with precipitation hardening as the source of the additional T6 strength. Subsequently, the mechanical strength properties are governed by Hall–Petch grain refinement and plastic deformation effect and remarkably improved by 86 % of yield stress (YS) and 61 % ultimate tensile strength (UTS), respectively with the resulting values of 225 MPa and 271 MPa.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 715-729"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738575","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":"Process optimization of SLA-fabricated BN-reinforced photopolymer composites using ANOVA for improved tensile strength","authors":"M.B. Swathi ,&nbsp;D.P. Girish ,&nbsp;M.H. Dinesh ,&nbsp;R. Keshavamurthy ,&nbsp;Alaauldeen A. Duhduh ,&nbsp;Ali A. Rajhi","doi":"10.1016/j.jmrt.2025.12.048","DOIUrl":"10.1016/j.jmrt.2025.12.048","url":null,"abstract":"<div><div>This study examined how the mechanical characteristics of 3D-printed photopolymer composites are affected by the inclusion of boron nitride (BN). Stereolithography technology was used to print BN-reinforced photosensitive resin composites with different BN weight percentages (0, 0.5, 1.0, and 1.5 wt%). The effect of process parameters - Material composition, build angle, post-curing time, and lift speed) on the tensile strength of the printed specimens were evaluated using a Taguchi L16 orthogonal array. The microstructure and elemental composition of the composites were characterized using energy-dispersive X-ray spectroscopy (EDAX) and scanning electron microscopy (SEM). Tensile tests were performed in accordance with ASTM <span><span>D638</span><svg><path></path></svg></span> Type IV, and the findings were assessed using an analysis of variance (ANOVA) and signal-to-noise (S/N) ratio. SEM and EDAX investigations revealed that BN was evenly distributed throughout the photosensitive resin matrix. The ANOVA results showed that post-curing time had the biggest effect on tensile strength (38.283 % contribution), followed by material composition (27.669 %), lift speed (16.265 %), and build angle (17.782 %). For the maximum tensile strength, the ideal set of process parameters was determined to be 1.5 wt percent BN, 90° build angle, 60 min post-curing time, and 60 mm per minute lift speed. Significant interactions between the parameters under study were displayed by interaction plots. This study offers important insights into optimizing SLA process settings for increased tensile strength and shows how BN-reinforced photopolymer composites can improve the mechanical properties of SLA-printed objects.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 1076-1088"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738513","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":"Study of mechanical properties and wear-resistance of TiCp and HEAp co-reinforced 5083 aluminum matrix composites","authors":"Renrun Mo ,&nbsp;Lisheng Zhong ,&nbsp;Jihui Guo","doi":"10.1016/j.jmrt.2025.12.093","DOIUrl":"10.1016/j.jmrt.2025.12.093","url":null,"abstract":"<div><div>Particle-reinforced aluminum matrix composites (PRAMCs) are widely used in defense, mineral drilling, and other industrial fields owing to their excellent wear resistance, corrosion resistance, and high specific strength. In this study, high-entropy alloy particles (HEAp) and TiC particles (TiCp) were employed as reinforcements to fabricate 5083 aluminum matrix composites with 9 vol% TiCp and 12 vol% HEAp via spark plasma sintering (SPS). The effects of different heat treatment temperatures on the diffusion layer of HEAp, as well as on the microstructure, mechanical properties and wear-resistance of the composites, were systematically investigated. The underlying mechanisms for the improved mechanical properties contributed by the hybrid reinforcements were explored. The results demonstrate that the incorporation of TiCp and HEAp significantly enhances the strength, ductility, and wear resistance of the aluminum matrix composites, thereby effectively mitigating the strength–ductility trade-off. After 24 h of heat treatment, the composite achieved a compressive strength of 772.8 MPa and a maximum strain of 22.1 %. The lowest wear volume and friction coefficient, recorded as 2.31 mm³ and 0.1698 respectively, were obtained after 12 h of heat treatment.</div></div>","PeriodicalId":54332,"journal":{"name":"Journal of Materials Research and Technology-Jmr&t","volume":"41 ","pages":"Pages 1065-1075"},"PeriodicalIF":6.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738512","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}