The coarse prior-β grain structure in titanium alloys produced by additive manufacturing is associated to mechanical anisotropy and limited fatigue life. Here we report a novel methodology refine such rapid heat treatment of Ti–6Al–4V laser powder-bed fusion. refinement was analysed using high-temperature EBSD that showed, for the first time, how high angle boundary β grains nucleated grew with quasi-equiaxed morphology epitaxial recrystallization. These findings show potential heating...

When Ti-6Al-4V is processed by laser powder bed fusion (L-PBF), acicular martensitic α'-Ti grains are formed within the columnar prior β-Ti grains, resulting in inferior mechanical properties. The application of blended powders L-PBF enables to tailor microstructures and obtain a mixture α' + β phases. In this work, we demonstrate an effective method engineer phase fraction manufactured Ti alloy using consisting 3 wt% Fe particles. By varying parameters, as-built transit from dominated...

Grain refinement in cast titanium alloys has been demonstrated through the addition of boron (B) hypoeutectic concentration. However, there is still a poor understanding how effective B towards microstructural under rapid solidification conditions. This study investigates impact on microstructure formation Ti-6Al-4V conditions, particularly relevant to Laser Powder Bed Fusion (PBF-LB), leading technique metal additive manufacturing. By examining range Ti-6Al-4V-xB with contents varying from...

Cell type annotation is crucial in single-cell RNA sequencing data analysis because it enables significant biological discoveries and deepens our understanding of tissue biology. Given the high-dimensional highly sparse nature data, most existing tools focus on variable genes to reduce dimensionality computational load. However, this approach inevitably results information loss, potentially weakening model’s generalization performance adaptability novel datasets. To mitigate issue, we...

Microstructures dominated by acicular α' martensitic phase, such as in the case of Ti-6Al-4V fabricated laser powder-bed fusion (PBF-LB), are known to suffer from reduced ductility and low toughness. The decomposition metastable microstructures into α+β lamellar structures during PBF-LB requires either specific regimes that often challenging be attained or post-process heat treatments which might lead, instead, undesirable coarsening grain structure. Here we propose a novel route for...

Laser powder bed fusion (L-PBF) enables the fast fabrication of pure nickel parts with complex structures. Tribological behaviors printed are crucial to its application, and highly dependent on volumetric energy density (VED), due variation wear mechanisms. In this study, investigate mechanisms evaluate tribological L-PBF nickel, samples fabricated different VEDs were tested by a ball-on-disc tribometer under representative loads. Unlike tribofilms formed casting during sliding, suffer...

Graphic design, as a product of the burgeoning new media era, has seen its users’ requirements for images continuously evolve. However, external factors such light and noise often cause graphic design to become distorted during acquisition. To enhance definition these images, this paper introduces novel image enhancement model based on visual features. Initially, histogram equalization (HE) algorithm is applied images. Subsequently, feature extraction performed using dual-flow network...

Ti-6.5Al-2Zr-1Mo-1V (TA15), widely used in the aerospace industry, is a medium- to high-strength, near-α titanium alloy with high aluminium equivalent value. The TA15 fabricated via laser powder bed fusion (L-PBF) normally presents typical brittle appearance as-built status, strength and low ductility. In this study, microstructure properties of L-PBF were engineered by various heat treatments below β-transus temperature (1022 °C). After treatment, original acicular martensite gradually...

Research on metastable β Ti alloys has recently shown the possibility to achieve outstanding ductility and work hardening behaviours by engineering materials' unique strain transformable attributes responses heat treatment. As quenching is central development of phase in these alloys, it interest understand how materials could be designed developed for use laser additive manufacturing where feedstocks experience numerous rapid thermal cycles. In this context, we first propose a material...

Fe-3.10%Si thin strips were prepared by symmetric and asymmetric cold rolling from commercial grain oriented silicon steel sheets, then annealed with without a magnetic field. Magnetic field of 12T was applied along the direction. annealing does not essentially change texture development that recrystallization consists mainly η fiber (RD//<001>), strongest component tends to transform Goss ({110}<001>) {210}<001> increase in speed ratio temperature. But promotes rolled...

Fe-3.10%Si thin strips were prepared from commercial grain oriented silicon steel sheet by cold rolling with different speed ratios and annealed at 1123K in vacuum, the recrystallization textures analyzed. Cold texture consists mainly of {111}<112>, {554}<225> {332}<113> components, while their orientation densities vary ratio layer through strip thickness. Recrystallization development depends on obviously, peak density deviates {110}<001> towards {210}<001>...

Microstructures dominated by acicular α' martensitic phase, such as in the case of Ti-6Al-4V fabricated laser powder-bed fusion (PBF-LB), are known to suffer from reduced ductility and low toughness. The decomposition metastable microstructures into α+β lamellar structures during PBF-LB requires either specific regimes that often challenging be attained or post-process heat treatments which might lead, instead, undesirable coarsening grain structure. Here we propose a novel route for...