-
641
Transforming waste into value: Advancing sustainable construction materials with treated plastic waste and foundry sand in lightweight foamed concrete for a greener future
Published 2025-06-01“…The thermal properties, including conductivity and diffusivity, were examined to enhance the energy efficiency, and microstructural analyses were conducted. The results showed a significant increase in initial and final setting times by 6.3 and 30%, respectively, with a 6.4% improvement in workability with 20% sand replacement. …”
Get full text
Article -
642
Test setup for analyzing the electrical resistance during fatigue loading for metastable austenite AISI 304L and its diffusion-brazed joints
Published 2025-03-01“…Finally, the change in microstructure was evaluated through electron channeling contrast imaging (ECCI) analyses at different load cycles.…”
Get full text
Article -
643
University proceedings. Volga region. Technical sciences
Published 2024-12-01“…Evaluation of microhardness, microstructure and quantitative evaluation of the chemical composition of the composite and its near-weld zone made it possible to determine the nature of material hardening and the properties of intermetallic phases in the weld zone. …”
Article -
644
-
645
Effect of Calcined Marble Powder and Magnetized Water on the Performance of Cement-Based Composites
Published 2024-12-01“…Notably, CMP-substituted mortars produced with TW showed a 10.8% to 15.8% increase in 28-day <i>f<sub>cs</sub></i> values compared to RMP-substituted mortars, while those prepared with MW exhibited 7.8% to 10.9% higher <i>f<sub>cs</sub></i> values than TW-prepared samples. A microstructural analysis via SEM indicated that CMP enhances hydration and microstructure densification, resulting in improved mechanical performance and durability. …”
Get full text
Article -
646
Enhancing Plasma Electrolytic Oxidation (PEO) Coatings on Magnesium Alloys: The Critical Role of Surface Pretreatments
Published 2025-07-01“…Proper surface pretreatment is essential for achieving optimal adhesion, microstructure, and uniformity of the coatings. Surface pretreatment techniques such as heat treatment, severe plastic deformation (SPD), laser surface modification, chemical immersion, cold spray deposition, and magnetron sputtering have been widely explored to optimize the interfacial bonding and microstructural characteristics of PEO coatings. …”
Get full text
Article -
647
Enhanced impact resistance of novel sustainable preplaced aggregate geopolymer concrete reinforced with steel mesh and 5D fibers
Published 2025-08-01“…The innovation combines sustainable geopolymer binders with hybrid reinforcement, creating a concrete system with enhanced impact strength. Microstructural analysis was also performed on the geopolymer grout used in PAC. …”
Get full text
Article -
648
Exploring the impact of seashell powder and nano-silica on ultra-high-performance self-curing concrete: Insights into mechanical strength, durability, and high-temperature resilien...
Published 2024-12-01“…Overall, the inclusion of seashells pre-mixed with nano-silica in UHPC enhanced the microstructure at both normal and elevated temperatures.…”
Get full text
Article -
649
Experimental investigation via torsion testing and simulation of static recrystallization of ferrite in ultra-low carbon steel
Published 2025-06-01“…Metallographic and EBSD analysis are used to evaluate the resulting microstructure after deformation and annealing. …”
Get full text
Article -
650
Enhanced characterization of wheat straw-PLA composites with silane coupling agent and alkali pretreatment
Published 2025-01-01Get full text
Article -
651
Rotary friction welding applied to Cu11.8Al0.45Be shape memory alloy
Published 2024-11-01“…The welding zones are well-defined, narrow, and have a very refined microstructure compared to the base metal. The phase transition temperatures along the welded assemblies were not changed when welding was performed on the quenched samples, except in the welding zone of the sample welded with 10 MPa. …”
Get full text
Article -
652
Enhancing ultrasonic-assisted drying of low-porosity products through pulsed electric field (PEF) pretreatment: The case of butternut squash
Published 2025-01-01“…PEF pretreatment altered the physicochemical and microstructural properties of butternut squash. Thus, the higher the energy input, the higher the cell disintegration rate, the lower the shearing force and the lower the water holding capacity. …”
Get full text
Article -
653
Tribo-Mechanical Characteristics of Modified Cu-Cr-Zr Resistance Spot Welding Electrode with Nickel
Published 2025-06-01“…Two alloy compositions, designated as Sample A (Cu-0.871%Cr-0.156%Zr) and Sample B (modified with 8.94% Ni), were prepared. Microstructural examination revealed a coarse, mixed equiaxed–columnar grain structure in Sample A, while Sample B exhibited a refined dendritic morphology of about 50 μm PDAS, due to nickel-induced solute partitioning, improving microhardness from 72.763 HV to 83.981 HV. …”
Get full text
Article -
654
Thermal Shock and High Temperature Wear Behaviors of SHM1302 Hard-Faced Layer
Published 2025-03-01“…To evaluate the high temperature application range of SHM1302 hard surface layer, the thermal shock resistance and high temperature wear resistance of SHM1302 hard surface layer were tested respectively, and the thermal shock and high temperature wear behavior of hard surface layer were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy(EDX) and other characterization methods.In addition, the relationship between high-temperature oxidation / microstructure transformation and thermal shock / high-temperature wear behavior was established.Results showed that the initiation and propagation of SHM1302 thermal shock cracks were affected by the combined effects of stress and oxidation, and the cracks mainly propagated along the interface between matrix and carbide.With the thermal shock cycle,the formation of harmful phase of MnFe2O4 in the oxide film and the precipitation of (Fe,Cr)3C in the matrix promoted the expansion of thermal shock cracks.At 500 ℃, the hard surface had good high temperature wear performance.The wear at 600 ℃and 700 ℃was significantly increased by 1 244%and 1 596%compared with 500 ℃.When the wear temperature increased from 500 ℃to 600 ℃, the increase of oxidation rate and the formation of harmful phase MnFe2O4 were the key factors for the rapid decline of wear performance.Furthermore, the M ⇌A structure transformation at 700 ℃promoted the initiation of fatigue cracks and further accelerated the wear process.…”
Get full text
Article -
655
Synergistic enhancement of recycled aggregate concrete using hybrid natural-synthetic fiber reinforcement and silica fume
Published 2025-09-01“…Microstructural and mineralogical characterizations were performed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). …”
Get full text
Article -
656
Contrasting effects of Si on high-temperature deformation behavior and room-temperature strength in V-microalloyed 10Mn-18Cr stainless steels
Published 2025-06-01“…Microstructural analysis of the hot-rolled and FH annealed structures was conducted using electron backscatter diffraction and laser scanning confocal microscopy, and precipitation was characterized by transmission electron microscopy. …”
Get full text
Article -
657
Research Progress on WC-12Co Coatings Prepared by High Velocity Oxy-Fuel Spraying
Published 2025-04-01“…High velocity oxy-fuel (HVOF) spraying has been developed as an important technology in surface engineering and remanufacturing to provide materials with protective and functional coatings,thereby ensuring the surface protection of parts and the remanufacturing of damaged products.The preparation of WC-12Co coatings by high velocity oxy-fuel (HVOF) is of great significance in improving the surface wear resistance of substrate materials and prolonging the service life of parts.In this paper, the spray powder, preparation process, control of coating microstructure and properties, flow field numerical simulation, particle deposition behavior, surface protection of engineering materials and posttreatment of HVOF spraying WC-12Co coatings were summarized.The research trends and application prospects of WC-12Co coatings were also prospected, and it was proposed that the evaluation of coating properties and protection, numerical simulation and experimental verification of the spraying process, and engineering application research were worthy of continuous attention.…”
Get full text
Article -
658
AlMgScZr alloys for laser powder bed fusion additive manufacturing. A review
Published 2025-06-01“…LPBF-processed AlMgScZr alloys exhibited a unique microstructure comprising equiaxed and columnar grains and achieved isotropic high strength. …”
Get full text
Article -
659
The Development of a New Bioabsorbable Plastically Deformed Mg-Based Composite with Hydroxyapatite Nanopowder Addition: Towards Improved Degradation and Biological Assessment
Published 2025-03-01“…In this work, the microstructure and degradation properties of a novel metal matrix composite composed of Mg with the addition of 1 vol. % hydroxyapatite nanopowder (Mg + 1 vol % nHAp) were evaluated. …”
Get full text
Article -
660
Mechanical and thermal properties of structural lightweight bamboo fiber-reinforced insulating mortar
Published 2025-07-01“…Bamboo fiber-reinforced mortar (BFRM) was evaluated for its microstructural, mechanical, and thermal properties. …”
Get full text
Article