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Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
Materials - Tập 10 Số 12 - Trang 1380
Abdollah Saboori, Elisa Padovano, Matteo Pavese, Hajo Dieringa, Claudio Francesco Badini
In the present study, the solution and ageing treatments behavior of Mg-RE-Zr-Zn alloy (Elektron21) and its nano-AlN reinforced nanocomposites have been evaluated. The properties of the thermal-treated materials were investigated in terms of Vickers hardness, the area fraction of precipitates, microstructure and phase composition. The solution treatments were performed by treating at 520 °...... hiện toàn bộ
Decision Tree Methods for Predicting Surface Roughness in Fused Deposition Modeling Parts
Materials - Tập 12 Số 16 - Trang 2574
Barrios, Pablo E. Romero
3D printing using fused deposition modeling (FDM) includes a multitude of control parameters. It is difficult to predict a priori what surface finish will be achieved when certain values are set for these parameters. The objective of this work is to compare the models generated by decision tree algorithms (C4.5, random forest, and random tree) and to analyze which makes the best prediction...... hiện toàn bộ
Effect of Material and Process Specific Factors on the Strength of Printed Parts in Fused Filament Fabrication: A Review of Recent Developments
Materials - Tập 12 Số 10 - Trang 1664
Muhammad Harris, Johan Potgieter, Richard Archer, Khalid Mahmood Arif
Additive manufacturing (AM) is rapidly evolving as the most comprehensive tool to manufacture products ranging from prototypes to various end-user applications. Fused filament fabrication (FFF) is the most widely used AM technique due to its ability to manufacture complex and relatively high strength parts from many low-cost materials. Generally, the high strength of the printed parts in F...... hiện toàn bộ
Estimation of the Adhesion Interface Performance in Aluminum-PLA Joints by Thermographic Monitoring of the Material Extrusion Process
Materials - Tập 13 Số 15 - Trang 3371
Stephan Bechtel, Mirko Meisberger, Samuel Klein, Tobias Heib, Steven Quirin, Hans‐Georg Herrmann
Using additive manufacturing to generate a polymer–metal structure offers the potential to achieve a complex customized polymer structure joined to a metal base of high stiffness and strength. A tool to evaluate the generated interface during the process is of fundamental interest, as the sequential deposition of the polymer as well as temperature gradients within the substrate lead to loc...... hiện toàn bộ
Effect of Structural Build-Up on Interlayer Bond Strength of 3D Printed Cement Mortars
Materials - Tập 14 Số 2 - Trang 236
Tinghong Pan, Yi-Rong Jiang, Hui He, Yu Wang, Kangting Yin
Understanding the relationship between the intrinsic characteristics of materials (such as rheological properties and structural build-up) and printability and controlling intrinsic characteristics of materials through additives to achieve excellent printability is vital in digital concrete additive manufacturing. This paper aims at studying the effects of material’s structural build-up on...... hiện toàn bộ
The Effect of Material Fresh Properties and Process Parameters on Buildability and Interlayer Adhesion of 3D Printed Concrete
Materials - Tập 12 Số 13 - Trang 2149
Biranchi Panda, Nisar Ahamed Noor Mohamed, Suvash Chandra Paul, G.V.P. Bhagath Singh, Ming Jen Tan, Branko Šavija
The advent of digital concrete fabrication calls for advancing our understanding of the interaction of 3D printing with material rheology and print parameters, in addition to developing new measurement and control techniques. Thixotropy is the main challenge associated with printable material, which offers high yield strength and low viscosity. The higher the thixotropy, the better the sha...... hiện toàn bộ
The Effect of Accelerator Dosage on Fresh Concrete Properties and on Interlayer Strength in Shotcrete 3D Printing
Materials - Tập 13 Số 2 - Trang 374
Inka Mai, Niklas Freund, Dirk Lowke
Recently, the progress in 3D concrete printing has developed enormously. However, for the techniques available, there is still a severe lack of knowledge of the functional interaction of processing technology, concrete rheology and admixture usage. For shotcrete 3D printing technology, we present the effect of accelerator dosages (0%, 2%, 4% and 6%) on fresh concrete properties and on inte...... hiện toàn bộ
In Situ Spinel Formation in a Smart Nano-Structured Matrix for No-Cement Refractory Castables
Materials - Tập 13 Số 6 - Trang 1403
Dominika Madej, Karina Tyrała
The hydration of an equimolar mixture of MgO and Al2O3 nano-powders has been proven to be an effective way to synthesize Mg6Al2CO3(OH)16∙4H2O as a component of a nano-structured matrix and magnesia-alumina spinel precursor for high-performance cement-free corundum-spinel refractory castables. (Mg3)–OH–brucite sites (417 °C) formed initially within the magnesia–alumina hydrating blended pas...... hiện toàn bộ
Ethylene Formation by Catalytic Dehydration of Ethanol with Industrial Considerations
Materials - Tập 6 Số 1 - Trang 101-115
Denise Fan, Der-Jong Dai, Ho‐Shing Wu
Ethylene is the primary component in most plastics, making it economically valuable. It is produced primarily by steam-cracking of hydrocarbons, but can alternatively be produced by the dehydration of ethanol, which can be produced from fermentation processes using renewable substrates such as glucose, starch and others. Due to rising oil prices, researchers now look at alternative reactio...... hiện toàn bộ
Tribological Properties of Aluminium Alloy Composites Reinforced with Multi-Layer Graphene—The Influence of Spark Plasma Texturing Process
Materials - Tập 10 Số 8 - Trang 928
Marek Kostecki, Jarosław Woźniak, Tomasz Cygan, Mateusz Petrus, A. Olszyna
Self-lubricating composites are designed to obtain materials that reduce energy consumption, improve heat dissipation between moving bodies, and eliminate the need for external lubricants. The use of a solid lubricant in bulk composite material always involves a significant reduction in its mechanical properties, which is usually not an optimal solution. The growing interest in multilayer ...... hiện toàn bộ
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