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Effect of partial replacement of CaCO3 with palm kernel shell particles on the mechanical properties of PKS/CaCO3/HDPE hybrid composites 棕榈仁壳颗粒部分取代CaCO3对PKS/CaCO3/HDPE杂化复合材料力学性能的影响
Results in Materials Pub Date : 2025-01-30 DOI: 10.1016/j.rinma.2025.100668
O. Issakah , A.M. Kayaba , Y. Fiagbe , S. Akromah , J.Y. Kpare , E.K.A. Asare
{"title":"Effect of partial replacement of CaCO3 with palm kernel shell particles on the mechanical properties of PKS/CaCO3/HDPE hybrid composites","authors":"O. Issakah ,&nbsp;A.M. Kayaba ,&nbsp;Y. Fiagbe ,&nbsp;S. Akromah ,&nbsp;J.Y. Kpare ,&nbsp;E.K.A. Asare","doi":"10.1016/j.rinma.2025.100668","DOIUrl":"10.1016/j.rinma.2025.100668","url":null,"abstract":"<div><div>The use of biofillers as reinforcement in polymer matrix composite material has increased due to numerous advantages such as high strength, eco-friendly, and high strength-to-weight ratio. In this work, the effect of different sized palm kernel shells (PKS) and calcium carbonate (CaCO3) as filler materials on the mechanical, physical, and thermal properties in High density polyethylene (HDPE) was studied. The fillers were melt-blended with HDPE using Noztek single-screw extruder, and the sample was prepared using hot pressing and injection molding. The effects of PKS on the microstructure, tensile strength, impact strength, hardness, and thermal properties were analyzed. Significant improvements were observed in the ternary composites. The results showed that Young's modulus was decreased by 9.5 % and 4.9 % for the 125 μm and 500 μm hybrid, respectively. The addition of PKS showed significant improvement in tensile and hardness properties. An increase of approximately 0.9 % and a decrease of 7.7 % were observed in the tensile strength for the 125 μm and 500 μm hybrid, respectively. A decrease of 82.23 % and 83.37 % were observed for the impact strength of the 125 μm and 500 μm hybrid, respectively. The hybrid composite showed a more promising result regarding the hardness, with a 44.5 % and 44.7 % increase for the 125 μm and 500 μm hybrid, respectively.</div><div>SEM analysis of the composite surfaces revealed relatively good interfacial interactions between the palm kernel shell particles and the HDPE/CaCO<sub>3</sub> matrix.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100668"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419790","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}
引用次数: 0
Microstructure simulation of maraging steel 1.2709 processed by powder bed fusion of metals using a laser beam: A cellular automata approach with varying process parameters 激光粉末床熔合马氏体时效钢1.2709的显微组织模拟:一种具有不同工艺参数的元胞自动机方法
Results in Materials Pub Date : 2025-01-30 DOI: 10.1016/j.rinma.2025.100667
Kai-Uwe Beuerlein , Mohammad Shojaati , Mazyar Ansari , Hannes Panzer , Shahriar Imani Shahabad , Mohsen K. Keshavarz , Michael F. Zaeh , Saeed Maleksaeedi
{"title":"Microstructure simulation of maraging steel 1.2709 processed by powder bed fusion of metals using a laser beam: A cellular automata approach with varying process parameters","authors":"Kai-Uwe Beuerlein ,&nbsp;Mohammad Shojaati ,&nbsp;Mazyar Ansari ,&nbsp;Hannes Panzer ,&nbsp;Shahriar Imani Shahabad ,&nbsp;Mohsen K. Keshavarz ,&nbsp;Michael F. Zaeh ,&nbsp;Saeed Maleksaeedi","doi":"10.1016/j.rinma.2025.100667","DOIUrl":"10.1016/j.rinma.2025.100667","url":null,"abstract":"<div><div>Additive manufacturing via powder bed fusion of metals using a laser beam (PBF-LB/M) enables the fabrication of parts from metal powder with mechanical properties surpassing those of conventional processes. In this manufacturing process, a grain structure that is very sensitive to process parameter modifications and the resulting change in the temperature field is formed. Simulating the solidification microstructure is crucial for understanding process-microstructure relationships and creating digital twins for microstructure engineering and tailoring. This work introduces a cellular automata (CA) methodology for the microstructure simulation of maraging steel 1.2709 processed by PBF-LB/M. A high-resolution moving heat source model, based on the finite element method, was set up to capture the temperature field. The solidification microstructure was simulated by a two-dimensional CA model. Ten sets of process parameters have been used to produce single tracks experimentally to validate the CA model. The microstructure of these sets has been characterized by optical and scanning electron microscopy. The CA model successfully captures the essential solidification characteristics. The grain sizes have demonstrated a significant sensitivity to initial conditions. In-depth analysis has revealed that process parameters and thermal conditions, rather than the energy density, critically influence the grain size and the aspect ratio. Meanwhile, the grain alignment angle has shown no explicit dependency on process parameters, underscoring the complex dynamics governing microstructural evolution. This methodology paves the way for advancing material design in various industries by enabling a precise control over mechanical properties through microstructure tailoring.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100667"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141666","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}
引用次数: 0
Synthesis and characterization of nano dicalcium phosphate dihydrate from biogenic sources 生物源纳米二水磷酸二钙的合成与表征
Results in Materials Pub Date : 2025-01-27 DOI: 10.1016/j.rinma.2025.100666
Md. Kawcher Alam , Md. Sahadat Hossain , Mofassel Hossen Akash , Muhammad Shahriar Bashar , Newaz Mohammed Bahadur , Samina Ahmed
{"title":"Synthesis and characterization of nano dicalcium phosphate dihydrate from biogenic sources","authors":"Md. Kawcher Alam ,&nbsp;Md. Sahadat Hossain ,&nbsp;Mofassel Hossen Akash ,&nbsp;Muhammad Shahriar Bashar ,&nbsp;Newaz Mohammed Bahadur ,&nbsp;Samina Ahmed","doi":"10.1016/j.rinma.2025.100666","DOIUrl":"10.1016/j.rinma.2025.100666","url":null,"abstract":"<div><div>In the present study, calcium-enriched marine sources (Turritella, Cardium, and Conch shells) were used to prepare dicalcium phosphate dihydrate (DCPD) in an easy, affordable, and sustainable manner. To produce DCPD, orthophosphoric acid was subjected to a reaction with each type of shell powdered substance, resulting in DCPD in a sheet-like or irregular-type shape. The powdered materials were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and Fourier-transform infrared spectroscopy (FT-IR). FT-IR spectroscopy was employed to determine the presence of functional groups in the prepared DCPD. SEM image confirms plate-like structure, indicating homogeneity in both size and shape. EDX spectrum confirms the presence of Ca, P, and O and the degree of purity of all produced materials. The crystallite size of nano DCPD is determined by a variety of XRD models using the XRD pattern. An acceptable measurement for crystallite size was also obtained using the Size-Strain Plot (17.55, 27.18, 35.55 nm) and Halder-Wagner Model (11.23, 13.15, 28.57 nm). Many crystallographic properties of the synthesized substances were examined, including dislocation density, crystallinity index, relative intensity, preference growth, and microstrain. The DCPD percentage obtained by Rietveld refinement analysis is close to 90 %. Therefore, Turritella, Cardium, and Conch shells will provide an alternate source to fulfil the need for raw materials to manufacture DCPD.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100666"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141667","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}
引用次数: 0
The feasibility of constructing rubber concrete pavement reinforced with recycled and industrial steel fibers 探讨了用再生钢纤维和工业钢纤维加固橡胶混凝土路面的可行性
Results in Materials Pub Date : 2025-01-22 DOI: 10.1016/j.rinma.2025.100657
Arash Shadfar , Mehdi Nani , Reza Shirinabadi , Seyed Azim Hosseini
{"title":"The feasibility of constructing rubber concrete pavement reinforced with recycled and industrial steel fibers","authors":"Arash Shadfar ,&nbsp;Mehdi Nani ,&nbsp;Reza Shirinabadi ,&nbsp;Seyed Azim Hosseini","doi":"10.1016/j.rinma.2025.100657","DOIUrl":"10.1016/j.rinma.2025.100657","url":null,"abstract":"<div><div>The utilization of waste tires in the construction sector offers a sustainable and durable alternative to traditional materials. This study investigates the performance of the rubberized concrete pavement reinforced with steel fibers, incorporating recycled tire particles to replace a portion of the coarse and fine aggregates. The objective is to determine the optimal combination of rubber content, steel fiber type, and fiber amount for constructing flexible and durable rubberized concrete pavements. Various rubber particle sizes were incorporated into the concrete mix, and the performance was compared with traditional concrete. Two types of steel fibers were considered: manufacturer-produced steel fibers (MSF) and recycled steel fibers from used car tires (RTSF). Mechanical properties, including compressive strength, bending strength, and modulus of elasticity, were evaluated. Results indicated that the addition of rubber particles reduced the density and efficiency of the concrete while increasing air content. While compressive strength increased with the addition of steel fibers in traditional concrete, it decreased in the rubberized concrete. However, the modulus of elasticity and bending strength improved with the inclusion of steel fibers in the rubberized concrete. The study concluded that an optimal combination for constructing flexible rubberized concrete pavement reinforced with steel fibers involved replacing 60 % of the rubber particles with regular concrete particles and adding 20 kg/m³ of both industrial and recycled steel fibers. This configuration provided a balance between mechanical properties and sustainability benefits.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100657"},"PeriodicalIF":0.0,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141665","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}
引用次数: 0
Investigation of the influence of the heterogeneous structure of concrete on its strength 混凝土非均质结构对其强度影响的研究
Results in Materials Pub Date : 2025-01-21 DOI: 10.1016/j.rinma.2025.100659
V.M. Volchuk, M.A. Kotov, Ye G. Plakhtii, O.A. Tymoshenko, O.H. Zinkevych
{"title":"Investigation of the influence of the heterogeneous structure of concrete on its strength","authors":"V.M. Volchuk,&nbsp;M.A. Kotov,&nbsp;Ye G. Plakhtii,&nbsp;O.A. Tymoshenko,&nbsp;O.H. Zinkevych","doi":"10.1016/j.rinma.2025.100659","DOIUrl":"10.1016/j.rinma.2025.100659","url":null,"abstract":"<div><div>The structure heterogeneity and the strength of concrete was evaluated using multifractal analysis. The macrostructure of concrete with a predominance of crushed stone, sand and pores was studied. The relevance of the work lies in the possibility to carry out express-assessment of the quality of concrete products and structures using the developed algorithm with the use of portable equipment: photographing the structure of concrete; estimation of the range of colour range of the structure elements; calculation of the fractal dimensionality of the structure elements using the developed program; automatic strength prediction. Analysis results of the canonical spectrum <em>f(α)</em>, statistical characteristics of structural components: uniformity, orderliness <em>Δ=f(α)</em><sub><em>q = 1</em></sub><em>−f(α)</em><sub><em>q = 100</em></sub>, and regularity <em>K=f(α)</em><sub><em>q = -100</em></sub><em>−f(α)</em><sub><em>q = 100</em></sub> were calculated. The sensitivity between the indicators of breaking load during compression tests and statistical characteristics was recorded. This approach allowed screening out low-sensitivity structure features from the multifractal spectrum. Results of the analysis of complex and separate influence of statistical characteristics on the indicators of the breaking load of concrete are shown with regression linear models. Indicators of paired correlation <em>R</em><sup><em>2</em></sup> were determined. A relation has been found between breaking load and repetitive structural elements of one phase. This method of investigating the strength properties of concrete can be considered as an express method with limited accuracy of the results, about 80 %. To simplify and facilitate the use of the method, the software can be placed in the form of a smartphone application, which will allow to take photos and process the data immediately. The proposed approach can be interpreted as an express method of predicting the strength of concrete mixture, which is implemented without the use of special equipment. It can be used to assess the residual life of concrete structures where full-scale testing is impossible due to damage to the integrity of the structure.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100659"},"PeriodicalIF":0.0,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143273765","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}
引用次数: 0
Direct laser powder bed fusion of ceramics 直接激光粉末床熔融陶瓷
Results in Materials Pub Date : 2025-01-18 DOI: 10.1016/j.rinma.2025.100664
Thywill Cephas Dzogbewu , Deon Johan de Beer
{"title":"Direct laser powder bed fusion of ceramics","authors":"Thywill Cephas Dzogbewu ,&nbsp;Deon Johan de Beer","doi":"10.1016/j.rinma.2025.100664","DOIUrl":"10.1016/j.rinma.2025.100664","url":null,"abstract":"<div><div>Direct laser powder bed fusion (LPBF) of ceramics has experienced tremendous advancement and it is about to be metamorphosed from the laboratory research phase to the industrial scale. Nonetheless, several challenges need to be overcome before progressing to the next phase of manufacturing crack-free, large-size, and multimaterial ceramic products via the direct LPBF process with high surface quality and homogeneous mechanical integrity. Surprising the current challenges required automation of the in-process activities to control the high viscous ceramic molten pool and its solidification mechanisms to mitigate the building up of thermal stress, and crack formation to ensure the production of crack-free, large-size ceramic parts with high surface quality. The automation of the process would ensure consistency, reliability, and reproducibility of direct printing of ceramic products, which would speed up the development of a validation framework for the certification of direct printed ceramic products. The post-processing activities of the indirect ceramic printing process might not be the ideal approach for producing dense crack-free ceramic products, since it could increase the cost of the product by 70 % without any significant improvement as compared to the direct LPBF ceramic manufacturing route.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100664"},"PeriodicalIF":0.0,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141568","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}
引用次数: 0
A comprehensive device modeling of organic-inorganic hybrid CH3NH3GeI3 based perovskite solar cell 有机-无机杂化CH3NH3GeI3钙钛矿太阳能电池的综合器件建模
Results in Materials Pub Date : 2025-01-16 DOI: 10.1016/j.rinma.2025.100665
Riduan Ferdous, Galib Hashmi
{"title":"A comprehensive device modeling of organic-inorganic hybrid CH3NH3GeI3 based perovskite solar cell","authors":"Riduan Ferdous,&nbsp;Galib Hashmi","doi":"10.1016/j.rinma.2025.100665","DOIUrl":"10.1016/j.rinma.2025.100665","url":null,"abstract":"<div><div>Organic-inorganic lead-based perovskite solar cells (PSCs) have emerged as a promising and rapidly evolving photovoltaic technology in recent years. However, the use of high-toxic lead material in PSC is incompatible with the 12<sup>th</sup> sustainable development goal and restricts the potential for commercialization. Recently, lead-free methylammonium germanium tri-iodide (CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub>)-based hybrid perovskite solar cells have garnered substantial attention in the field of photovoltaics due to their remarkable combination of high efficiency. The exceptional photovoltaic performance of hybrid CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub> perovskite solar cells is the central theme of this study. Where emphasis has been given to attaining high power conversion efficiency by adjusting various parameters of the CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub> perovskite layer using a solar cell capacitance simulator (SCAPS-1D). Moreover, the influence on parameter changes, i.e., thickness, doping concentration, quantum efficiency, and defect density of perovskite, ETL, HTL, HTL/CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub>, and CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub>/ETL layers, has been explored. The unique FTO/ZnO/CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub>/Cu<sub>2</sub>O/Ni-structured perovskite solar cell demonstrates impressive simulative performance with a V<sub>OC</sub> of 1.39 V, J<sub>SC</sub> of 21.93 mA/cm<sup>2</sup>, a fill factor of 79.82 %, and an efficiency of 24.46 %. CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub> is a promising candidate that can be employed as a perovskite layer, and if fabricated properly, FTO/ZnO/CH<sub>3</sub>NH<sub>3</sub>GeI<sub>3</sub>/Cu<sub>2</sub>O/Ni perovskite solar cell has the possibility to be a competitive alternative to conventional silicon-based photovoltaics.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100665"},"PeriodicalIF":0.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141663","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}
引用次数: 0
Phase formation, microstructural and superconducting properties of YBCO added Ca-compounds extraction eggshells 添加ca化合物萃取蛋壳的YBCO的相形成、微观结构和超导性能
Results in Materials Pub Date : 2025-01-15 DOI: 10.1016/j.rinma.2025.100661
Siew Hong Yap , Mohd Mustafa Awang Kechik , Syahrul Humaidi , Khairul Khaizi Mohd Shariff , Hussien Baqiah , Soo Kien Chen , Kean Pah Lim , Mohd Hafiz Mohd Zaid , Yazid Yaakob , Mohd Khalis Abdul Karim , Zainal Abidin Talib , Zhi Wei Loh , Aliah Nursyahirah Kamarudin , Abdul Halim Shaari , Muralidhar Miryala
{"title":"Phase formation, microstructural and superconducting properties of YBCO added Ca-compounds extraction eggshells","authors":"Siew Hong Yap ,&nbsp;Mohd Mustafa Awang Kechik ,&nbsp;Syahrul Humaidi ,&nbsp;Khairul Khaizi Mohd Shariff ,&nbsp;Hussien Baqiah ,&nbsp;Soo Kien Chen ,&nbsp;Kean Pah Lim ,&nbsp;Mohd Hafiz Mohd Zaid ,&nbsp;Yazid Yaakob ,&nbsp;Mohd Khalis Abdul Karim ,&nbsp;Zainal Abidin Talib ,&nbsp;Zhi Wei Loh ,&nbsp;Aliah Nursyahirah Kamarudin ,&nbsp;Abdul Halim Shaari ,&nbsp;Muralidhar Miryala","doi":"10.1016/j.rinma.2025.100661","DOIUrl":"10.1016/j.rinma.2025.100661","url":null,"abstract":"<div><div>For several decades now, the emergence and production of high-quality bulk rare-earth-based superconductors, particularly YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> (YBCO/Y-123), have been noteworthy advancements with potential implications in various fields. This unique research investigated the potential of using chicken eggshells as a source of calcium compounds (CaO, CaCO<sub>3</sub> and Ca(OH)<sub>2</sub>) for the synthesis of YBCO. The green approach synthesis of YBCO added with Ca-compounds (0.0100 wt% ≤ x ≤ 0.6000 wt%) was conducted in a systematic manner via thermal treatment method. The crystal structure, surface morphology, and chemical composition of the specimens were characterized by X-ray diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), and Energy Dispersive X-Ray Spectroscopy (EDX). The results showed the formation of orthorhombic Y-123 phase, <em>Pmmm</em> space group with the high-intensity peaks of Y-123. The addition of Ca-compounds proposed a different trend of grain degradations in the YBCO matrix system with the appearance of Ca-compounds' impurity phases. The superconducting properties such as electrical resistivity analyzed using electrical resistance measurement. Surprisingly, the superconducting parameters improved after Ca-compounds were added into the YBCO system. The hole concentration, <em>p</em> reached the highest value among all the specimens with the lowest superconducting transition width, ∼Δ<em>T</em><sub>c</sub> = 3.805 K (<em>T</em><sub>c-onset</sub> = 93.223 K and <em>T</em><sub>c(R = 0)</sub> = 89.418 K) for the lowest concentration of Ca-compounds i.e., 0.0375 wt%. This great finding targeted the green approach impurity materials into YBCO system that can usefully enhance the superconducting properties at high temperature which covers the idea of addition with deficient concentration Ca-compounds.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"26 ","pages":"Article 100661"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912972","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}
引用次数: 0
Microstructure and hardness properties for laser powder directed energy deposition cladding of Inconel 718 on electron beam powder-bed fusion fabricated Inconel 625 substrates: As-built and post-process heat treated 电子束粉末床熔合制备Inconel 625基板上激光粉末定向能熔覆Inconel 718的显微组织和硬度性能:初铸和后处理
Results in Materials Pub Date : 2025-01-15 DOI: 10.1016/j.rinma.2025.100660
D. Garcia , K.I. Watanabe , L. Marquez , E. Arrieta , L.E. Murr , R.B. Wicker , F. Medina
{"title":"Microstructure and hardness properties for laser powder directed energy deposition cladding of Inconel 718 on electron beam powder-bed fusion fabricated Inconel 625 substrates: As-built and post-process heat treated","authors":"D. Garcia ,&nbsp;K.I. Watanabe ,&nbsp;L. Marquez ,&nbsp;E. Arrieta ,&nbsp;L.E. Murr ,&nbsp;R.B. Wicker ,&nbsp;F. Medina","doi":"10.1016/j.rinma.2025.100660","DOIUrl":"10.1016/j.rinma.2025.100660","url":null,"abstract":"<div><div>Laser powder directed energy deposition (LP-DED) additive manufacturing (AM) deposited Inconel 718 claddings (at laser power levels of 800, 1000, and 1200 W) onto Inconel 625 substrates fabricated by electron beam powder-bed fusion (EB-PBF). The cladding components were post-process heat treated for 1 h at temperatures of 1025 °C, 1175 °C, and 1250 °C. The microstructures and Vickers hardnesses were examined and compared for the as-built and heat treated cladding components. As-built claddings consisted of columnar dendrites and precipitate columns while the heat-treated microstructures consisted of varying degrees of recrystallization and grains containing {111} fcc annealing twins. The as-built cladding bond consisted of a 25–50 μm wide transition zone while the heat treated cladding bonds consisted primarily of linked grain boundaries sometimes alternating between the Inconel 718 alloy cladding and the Inconel 625 substrate. For the as-built components, the hardness increased from the Inconel 625 substrate to the Inconel 718 cladding. For the heat treated components, the hardness for the Inconel 718 cladding was lessened with increasing heat treatment temperature, but was overall similar to the Inconel 625 substrate.</div></div>","PeriodicalId":101087,"journal":{"name":"Results in Materials","volume":"25 ","pages":"Article 100660"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143141662","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}
引用次数: 0
Fabrication and characterization of corn starch based bioplastic for packaging applications 包装用玉米淀粉基生物塑料的制备与表征
Results in Materials Pub Date : 2025-01-15 DOI: 10.1016/j.rinma.2025.100662
Md. Arefin Kowser , Hanif Mahmud , Mohammad Asaduzzaman Chowdhury , Nayem Hossain , Juhi Jannat Mim , Safiul Islam
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