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The effect of boron (B) on stress corrosion resistance of S31254 in the presence of residual stresses has been studied. The microstructure and corrosion resistance of S31254 containing B at different levels of cold deformation are analyzed in this study. In the results, it is shown that B favors the improvement of deformation uniformity of S31254. The grain boundary (GB) and slip bands have better corrosion resistance at 5% deformation, and the overall corrosion resistance is better than that of the undeformed state, with smaller passivation current density and narrower width of GB corrosion grooves, especially for the 40B samples. At 30% deformation, the overall corrosion resistance of 40B S31254 is better than 0B due to improved deformation uniformity. [ABSTRACT FROM AUTHOR]

Polylactic acid (PLA) is the prevailing raw material for fused deposition modeling (FDM) 3D printing filaments, offering benefits such as a low printing temperature, minimal shrinkage, and biodegradability. However, this material has challenges such as poor toughness, low heat deflection temperature, susceptibility to moisture‐induced thermal degradation, and high costs. This study addressed these concerns by incorporating natural bamboo fiber (BF) into PLA, elevating heat the deflection temperature and lowering the material costs. Additionally, a synthesized branched structure compatibilizer, in the form of epoxidized soybean oil‐branched cardanol ether (ESOn‐ECD), enhanced the toughness of PLA, the bonding strength between PLA and the BF surface, and the flowability of high‐fiber composites during processing and printing. The mechanical, thermal, and rheological properties were assessed, demonstrating the promising processing performance of PLA/BF/ESO3‐ECD. The fully biobased composite exhibits strength, toughness, good processability, excellent 3D printability, and durability, implying substantial potential in FDM 3D filament production. Highlights: Bio‐based PLA/bamboo fiber/ESO3‐ECD FDM 3D printing filaments were developed.The excellent nucleation ability of the bamboo fibers enhances the crystallization rate and crystallinity of PLA.The epoxy values and branching degree of ESOn‐ECD are crucial for its effective modification. [ABSTRACT FROM AUTHOR]

In order to study the influence of long-term water action on the behavior characteristics of steel slag aggregate-asphalt interface and the related mechanism, atomic force microscope, X-ray diffraction, scanning electron microscope, immersion Marshall test, rutting test and so on were used to analyze from macro and micro perspectives. The results show that long-term water erosion changes the surface chemical properties of steel slag, making the surface roughness, surface area and adhesion strength of the steel slag increase. Compared with limestone asphalt mixture, the residual stability and dynamic stability of steel slag asphalt mixture have a growth potential, but the swelling of hot-sealed steel slag and cold-sealed steel slag is different. The swelling amount of cold-sealed steel slag asphalt mixture is greater than that of hot-sealed steel slag asphalt mixture, which should be treated differently in the application process. The slow digestion rate of f-CaO in cold-sealed steel slag aggregate causes the volume expansion of the specimen in the late stage, aggravates the generation of microcracks on the surface of the specimen, and results in the poor freeze-thaw splitting strength of cold-sealed steel slag asphalt mixture in the late stage. [ABSTRACT FROM AUTHOR]

Plasticizers are widely used in poly(vinyl chloride) (PVC), polylactic acid (PLA), thermoplastic starch (TPS), and other modified powder materials to enhance the flowability, flexibility, and processability of macromolecules. Because of the reprotoxicity of phthalates in animals and humans, certain phthalates have recently been banned in the United States and Europe. Biobased plasticizers from green biomass–derived renewable resources with low toxicity are expected to be a substitute for phthalates. Among a variety of newly developed biobased monomers, cardanol, and isosorbide are the two most promising materials because of their unique structural features. This review summarizes the research progress of cardanol‐ and isosorbide‐based plasticizers with synergistic effects of plasticization, thermal stabilization, and anti‐migration. By summarizing and analyzing the relationship between molecular structure of plasticizer and plasticizing performance, this review can provide theoretical guidance for future research on the design of isosorbide‐ and cardanol‐based plasticizers. Highlights: Biobased plasticizers with low toxicity are expected to replace certain phthalates.The plasticizing effect of single biobased plasticizer is not good.Biobased plasticizer with synergistic effects is required.There exists the trade‐off effect between the molecular weight and the compatibility.Epoxidized isosorbide ester can be used as a heat stabilizer. [ABSTRACT FROM AUTHOR]