Results in Materials最新文献

{"title":"Research on the composition optimization and mechanical properties of sulfate activated full solid waste non-clinker cementitious materials based on simplex-centroid design method","authors":"Yingbin Cui ,&nbsp;Haikun Lian ,&nbsp;Fangfang Liu ,&nbsp;Zhen Wang ,&nbsp;Taotao Fan ,&nbsp;Chundi Si ,&nbsp;Zixuan Li","doi":"10.1016/j.rinma.2026.100960","DOIUrl":"10.1016/j.rinma.2026.100960","url":null,"abstract":"<div><div>To explore the feasibility of converting industrial solid waste in Hebei Province into cementitious materials, three industrial solid wastes, iron tailings sand, coal gangue powder and blast furnace slag were as the raw materials and desulfurization gypsum as sulfate-based activators to establish sulfate activated-full solid waste non-clinker cementitious materials (FSC). The influences of component dosages on the mechanical properties of sulfate activated-FSC mortar and setting time of sulfate activated-FSC were explored through single-factor design method, and the component dosages ranges of sulfate activated-FSC were determined. On this basis, the optimal composition of sulfate activated-FSC was designed based on the simplex-centroid design method, and the variation laws of compressive strength and flexural strength of sulfate activated-FSC mortar were evaluated. The results displayed that the increase in the dosage of iron tailings sand and coal gangue powder would reduce the strength of sulfate activated-FSC mortar and prolong the setting time of sulfate activated-FSC. The dosage of desulfurization gypsum within the range of 10% to 20% would enhance the strength of sulfate activated-FSC mortar after short-term curing. The optimal proportions of sulfate activated-FSC were 18% iron tailings sand, 16% coal gangue powder, 50% blast furnace slag, and 16% desulfurization gypsum. And then, the mechanical properties of sulfate activated-FSC mortar under optimal proportions were analyzed based on the freeze-thaw resistance test, drying shrinkage test and salt erosion resistance test, respectively. The test results showed that sulfate activated-FSC mortar exhibited good freeze-thaw resistance and salt erosion resistance performance. The compressive strength loss rates and weight loss rates of sulfate activated-FSC mortar after 30 freeze-thaw cycles were 8.57 % and 0.34 %, respectively, and its erosion resistance coefficient was 85.76% soaked in a 10% NaCl and Na₂SO₄ mixed solution for 30 days. Finally, the results of X-ray diffraction test and scanning electron microscopy test showed that the hydration reactions between desulfurization gypsum and raw materials would generate the hydration products, including calcium silicate hydrate gel, calcium aluminate hydrate gel and ettringite, to form the dense network structure in sulfate activated-FSC mortar, and improve its mechanical properties.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100960"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148178190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel indentation technique for assessing bonding strength between additive manufactured multi-materials","authors":"Håkon Linga ,&nbsp;Vegard Brøtan ,&nbsp;Bjørn Holmedal","doi":"10.1016/j.rinma.2026.100974","DOIUrl":"10.1016/j.rinma.2026.100974","url":null,"abstract":"<div><div>The use of multi-material parts is becoming increasingly common with the growing adoption of additive manufacturing. This approach allows for the integration of various material properties into a single part, but it also introduces an additional failure point at the interface between the different materials. Various methods can be employed to characterize bonding strength, though most require precise machining. This study investigates an alternative approach using Vickers hardness indenting on to the hardest material, near the interface between two materials. Varying the indentation depth, and distance between the interface and indentation induces varying shear stresses in the interface, making crack initiation possible with a II/III mixed fracture mode. This article presents a proof of concept for a novel technique to assess the strength of a multi-material bond, although the study is limited to a bronze and tool steel interface.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100974"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148178193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inverse kinetic parameter optimization and sensitivity analysis of high-density polyethylene pyrolysis","authors":"Rao Adeel Un Nabi ,&nbsp;Hina Maryam ,&nbsp;Naba Taskeen ,&nbsp;TieJun Wang ,&nbsp;Hassan Abbas Khawaja","doi":"10.1016/j.rinma.2026.100968","DOIUrl":"10.1016/j.rinma.2026.100968","url":null,"abstract":"<div><div>The kinetic rate constants for high-density polyethylene (HDPE) pyrolysis pose challenges due to discrepancies between experimentally determined values and those predicted by yield analysis. To address this, an inverse numerical modelling approach targeting selective product distribution was developed and evaluated using an established HDPE reaction mechanism from the literature. The objective was to achieve a mass balance target of 50 wt% oil and 50 wt% gas within 60 min to minimized the squared divergence between simulated and target outputs. The ordinary differential equation solver (ode23), incorporating established pyrolysis kinetics, predicted kinetic rates for selective product distribution. The algorithm adjusted rate constants to achieve the target fit, which was validated against experimental yields at 500 °C, 550 °C, and 600 °C. Results show that inverse numerical modelling for targeted prediction of kinetic rate constants significantly improves agreement between predicted and experimental yields. Predicted rate constants indicate better performance at 500 °C, while higher temperatures exhibit more aggressive reaction behavior. The model demonstrates strong agreement with the target distribution, with R² = 0.999, RMSE = 0.04-0.32, and MAD = 0.04-0.18, highlighting the robustness of the proposed optimized framework. Additionally, a ±100% parametric sensitivity analysis of the optimized rate constants quantifies the pathway-specific influence of individual kinetic parameters on selective product extraction. Literature evidence further supports these findings and provides recommendations for selecting a specific kinetic rate constant and for overall process optimization. This study presents a numerical framework for accurately predicting and optimizing product distributions in HDPE pyrolysis across varying temperature conditions.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100968"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148178195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crape myrtle flower extract as a plant-based dye for silk: Performance and mordant optimization","authors":"Umme Lewara Bristi ,&nbsp;Abdur Rahman ,&nbsp;Ishrat Jahan ,&nbsp;Sadit Bihongo Malitha ,&nbsp;Oishee Rahman ,&nbsp;Sharmin Shoukat ,&nbsp;Alauddin Riyad ,&nbsp;Nazmul Haque","doi":"10.1016/j.rinma.2026.100973","DOIUrl":"10.1016/j.rinma.2026.100973","url":null,"abstract":"<div><div>The growing demand for sustainable textile coloration has shifted attention towards natural dyes. This study assesses crape myrtle (<em>Lagerstroemia indica</em>) flower extract as a plant-based dye for silk fabrics. Pre-, meta-, and post-mordantation were performed with aluminium, copper, and ferrous salts. Color strength (K/S) and fastness properties were assessed in accordance with ISO standards. The highest color intensity (K/S: 4.56) and superior overall color fastness were found with pre-mordantation with aluminium salt. Perspiration fastness ranged from 3 to 4 for all samples. At the same time, lightfastness and rubbing fastness were highest for aluminium and copper salts (4–5), with ferrous salt giving lower performance (3–4). Washing fastness was also highest in silk samples mordanted with aluminium and copper salts. FTIR analysis confirmed that the silk fibers maintained their structure in all dyeing processes. These results show that pre-mordantation with aluminium salt enhance dye uptake and fastness. Overall, the result highlights crape myrtle extract as a viable, eco-friendly natural colorant for high-performance silk fabric dyeing.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100973"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148178293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical modelling of flexural and tensile behavior of epoxy-based foam composite filled with hollow glass microspheres and nanoclay","authors":"Ayodele Abraham Ajayi,&nbsp;Krishnan Kanny,&nbsp;Mohan Turup Pandurangan","doi":"10.1016/j.rinma.2026.100967","DOIUrl":"10.1016/j.rinma.2026.100967","url":null,"abstract":"<div><div>This work focuses on numerical and experimental studies of the tensile and flexural properties of epoxy-based foam panels filled with hollow glass microspheres and nanoclay particles, with the aim of enhancing the tensile and flexural strength of the foam composite panels. The composite was developed using a conventional resin-casting method through an experimental approach, and Abaqus 6.13 software was used to perform finite element simulations of tensile and flexural properties. As needed, standards were followed when doing the finite element simulations and analysis. The developed models were also used to simulate and experimentally validate the tensile and flexural performance of such panels. A relationship was found between the mechanical property data from the finite element simulations.</div><div>The findings revealed that the maximum tensile strength of 23.77 MPa was observed in the 3 wt%HGM+1 wt%Nanoclay composite, and the maximum flexural strength of 66.21 MPa was found in the 1 wt%HGM+1 wt%Nanoclay composite, which was found to have enhanced the bending strength of the composites compared with neat epoxy, as validated by numerical analysis. It was shown from a comparison of the outcomes which revealed that the experimental specimens and numerical simulation were accurate, with a maximum error of roughly 8.93%. The findings provide a workable way to reduce weight and improve fuel efficiency in cars and aeroplanes by replacing the heavier parts with an epoxy-based composite panel.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100967"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148178196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Computational insight into the effect of SrO substitution for CaO on the structural properties of simulated silicate-based bioactive glass","authors":"Amirhossein Moghanian","doi":"10.1016/j.rinma.2026.100980","DOIUrl":"10.1016/j.rinma.2026.100980","url":null,"abstract":"<div><div>This study investigates the effect of strontium oxide (SrO) on the structural properties of silicate-based bioactive glasses (BGs) with the composition of 60SiO₂-(40-x)CaO-xSrO (x = 0, 5, 10, 15, 20 mol%). The molecular dynamics (MD) simulations were used via the large-scale atomic/molecular massively parallel simulator (LAMMPS) software. The melt-quenching method was simulated to computationally synthesize amorphous BGs, and their short-range and medium-range structural properties were analyzed. Short-range properties revealed consistent Si-O tetrahedral structures with a CN of 4, while Sr-O exhibited a CN of 7 compared to Ca-O's CN being 6. Medium-range properties such as network connectivity (NC) indicated that SrO substitution increased slightly NC from 2.67 to 2.69. Additionally, the clustering was shown by the Ca atoms' R factor to approach Sr atoms, causing clusters, in which the 60SiO₂-35CaO-5SrO (Sr5) sample had the closest R to 1 with a value of 1.17, showing the least clustered structure. Ion clustering caused by the tendency of Ca atoms to be attracted towards Si and Sr atoms was investigated to have a significant impact on the difference between theoretical and simulated NC. Taken together, results highlighted the critical role of SrO substitution in structural properties of silicate-based BGs, and showed that the MD simulations can provide valuable data in designing compositions suitable for bone tissue engineering applications.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100980"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148231250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of the pressure dependent physical properties of MAX phase Ti2AlX (X = B, C, and N) compounds: A first-principles study","authors":"M.I. Naher,&nbsp;M. Montasir,&nbsp;M.Y.H. Khan,&nbsp;M.A. Ali,&nbsp;M.M. Hossain,&nbsp;M.M. Uddin,&nbsp;M.Z. Hasan,&nbsp;M.A. Hadi,&nbsp;S.H. Naqib","doi":"10.1016/j.rinma.2026.100982","DOIUrl":"10.1016/j.rinma.2026.100982","url":null,"abstract":"<div><div>The physical properties and their pressure dependence of recently synthesized Ti₂Al<em>X</em> (<em>X</em> = B, C, and N) MAX phases are investigated for the very first-time applying density functional theory (DFT). The optimized lattice parameters are in good agreement with the existing literature. The metallic character of the phases is supported by the Fermi level overlap of the conduction band and valence band. Structural parameters of competing phases, elastic constants, and phonon calculations revealed that all three compounds are structurally, mechanically, and dynamically stable under pressure. The materials are brittle in nature at 0 GPa and start exhibiting ductility at around 8 GPa, confirmed by both Pugh's and Poisson's ratios. All three compounds possess good level of hardness. The compounds have moderate machinability. The Debye temperature, phonon thermal conductivity, and melting temperature are moderate; with the highest value observed for Ti₂AlN. The lattice thermal conductivity decreases with increasing pressure (up to 10 GPa) and temperature (up to 1500 K). Directional anisotropies in mechanical, optical, and thermal features are at moderate level for all three MAX phases. All the compounds under study exhibit potential as promising TBC (thermal barrier coating) materials. They are also suitable for optical applications.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100982"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of the mechanical properties of peanut shell powder/macadamia nutshell powder/reinforced poly(lactic acid) biocomposites using the mixture design","authors":"Arawan Chanpahol ,&nbsp;Boonsin Nadondu ,&nbsp;Noppadol Sriputtha ,&nbsp;Don Kaewdook","doi":"10.1016/j.rinma.2026.100977","DOIUrl":"10.1016/j.rinma.2026.100977","url":null,"abstract":"<div><div>The development of biocomposites from agricultural waste has received a great deal of attention in the context of sustainability and the circular bioeconomy. While the use of natural fillers and single agricultural waste fillers to reinforce polylactic acid (PLA) composites has been widely investigated, dual filler reinforcement of PLA using multiple waste-derived particulate fillers has received limited attention. This study aims to optimize the mechanical properties of PLA biocomposites reinforced with peanut shell powder (PSP) and macadamia nutshell powder (MNSP) using a mixture design approach and analysis of variance (ANOVA). The biocomposites were fabricated through twin-screw co-rotating extrusion followed by injection molding, and evaluated using tensile, flexural and impact tests according to ASTM standards. The mixture design enabled systematic evaluation of the effects and interactions of PSP, MNSP and PLA compositions. The optimal experimental formulation composition of 5 wt% PSP, 5 wt% MNSP, and 90 wt% PLA exhibited superior mechanical properties. The predicted optimum mechanical properties are as follows: tensile strength of 48.08 MPa, tensile modulus of 1730.24 MPa, flexural strength of 88.12 MPa, flexural modulus of 5749.46 MPa, and Izod impact strength of 43.20 kJ/m². The biocomposite was characterised using SEM, EDS and FTIR. The results demonstrate that this method effectively produces sustainable, dual-filler PLA biocomposites that have improved mechanical performance.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"30 ","pages":"Article 100977"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148178290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating the effect of annealing on the forming limit and mechanical properties of tri-layer copper/304L stainless steel /copper composite sheets","authors":"Seyed Mohammad Ali Mortazavi Moghadam,&nbsp;Ramin Hashemi","doi":"10.1016/j.rinma.2025.100883","DOIUrl":"10.1016/j.rinma.2025.100883","url":null,"abstract":"<div><div>In addition to mechanical resistance, ductility is an essential property of multilayer metal composites. Therefore, in this study, the effect of annealing temperature (450, 600, and 750 °C) on the mechanical properties and ductility of copper/304L stainless steel/copper composite (Cu/304L/Cu) sheets produced by cold roll bonding (CRB) was investigated. The results showed that the CRB process significantly increases tensile strength and hardness, while decreasing elongation. However, due to recrystallization, the annealing treatment can moderate the effects of these changes in mechanical properties. Also, the composite's microstructure shows that at 600 °C, complete crystallization occurs in the 304L steel layer. Also, dimples in the SEM images indicate ductile fracture in the annealed samples. The dimples become deeper as the annealing temperature increases, confirming the greater formability. In addition, after plotting the forming limit diagram, it was found that the annealing heat treatment improves the ductility of the Cu/304L/Cu composite.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100883"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of spin arc GMAW process and welding of Inconel 718 superalloy","authors":"G. Ravi ,&nbsp;Jonah ,&nbsp;R. Arulmani","doi":"10.1016/j.rinma.2025.100850","DOIUrl":"10.1016/j.rinma.2025.100850","url":null,"abstract":"<div><div>Inconel 718 alloy widely used in aerospace applications must be joined under lower heat input conditions during out-of-position welding. The recently developed novel spin arc welding method has extensive industrial applications owing to its all-position welding capability, increased productivity, and high-quality welds. The weld quality is influenced by spin diameter (D), spin speed (N), welding speed (S), welding current, etc., and a better quality could be achieved by optimizing the process. In this study, influences of D, N, and S on depth of penetration (DP), bead height (BH), and bead width (BW) were explored using regression models. N had a greater influence on DP, BH, and BW than D. The spin-arc process was optimized using the desirability technique to obtain the maximum DP, BH, and minimum BW. Aged Inconel 718 alloy disc was joined at the optimum condition and characterized. The weld metal microstructure exhibited a columnar dendritic structure without cracks and an absence of carbides in the heat affected zone (HAZ) and weld metal (WM). WM contained a uniform distribution of Nb and Laves constituents and the mean volume fractions of Nb and laves were 10.5 ± 1.5 % and 18 ± 2.55 %, respectively. WM micro-hardness was higher than that of other regions and the joint strength was slightly lower than BM.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"29 ","pages":"Article 100850"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}