scholarly journals Additive Manufacturing and size-dependent mechanical properties of three-dimensional microarchitected, high-temperature ceramic metamaterials

2018 ◽  
Vol 33 (3) ◽  
pp. 360-371 ◽  
Author(s):  
Huachen Cui ◽  
Ryan Hensleigh ◽  
Hongshun Chen ◽  
Xiaoyu Zheng
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Additive Manufacturing ◽  
Three Dimensional ◽  
Size Dependent ◽  
Image Position

Abstract

scholarly journals A Review Study on Mechanical Properties of Obtained Products by FDM Method and Metal/Polymer Composite Filament Production

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Ümit Çevik ◽  
Menderes Kam
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Polymer Composite ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Production Method ◽  
Context Analysis ◽  
Fused Deposition ◽  
Composite Filament ◽  
Metal Polymer

In addition to traditional manufacturing methods, Additive Manufacturing (AM) has become a widespread production technique used in the industry. The Fused Deposition Modeling (FDM) method is one of the most known and widely used additive manufacturing techniques. Due to the fact that polymer-based materials used as depositing materials by the FDM method in printing of parts have insufficient mechanical properties, the technique generally has limited application areas such as model making and prototyping. With the development of polymer-based materials with improved mechanical properties, this technique can be preferred in wider application areas. In this context, analysis of the mechanical properties of the products has an important role in the production method with FDM. This study investigated the mechanical properties of the products obtained by metal/polymer composite filament production and FDM method in detail. It was reviewed current literature on the production of metal/polymer composite filaments with better mechanical properties than filaments compatible with three-dimensional (3D) printers. As a result, it was found that by adding reinforcements of composites in various proportions, products with high mechanical properties can be obtained. Thus, it was predicted that the composite products obtained in this way can be used in wider application areas.

Improvement of mechanical properties of extruded AZX912 magnesium alloy using high-temperature solution treatment

2019 ◽  
Vol 34 (21) ◽  
pp. 3725-3734
Author(s):  
Xinsheng Huang ◽  
Yasumasa Chino ◽  
Hironori Ueda ◽  
Masashi Inoue ◽  
Futoshi Kido ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Magnesium Alloy ◽  
Solution Treatment ◽  
High Temperature Solution ◽  
Temperature Solution ◽  
Image Position

Abstract

scholarly journals Experimental Investigation on Mechanical Properties of Part Fabricated by Wire Arc Additive Manufacturing Process

2021 ◽  
Author(s):  
Vivek Kumar P ◽  
◽  
Soundrapandian E ◽  
Jenin Joseph A ◽  
Kanagarajan E ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Three Dimensional ◽  
Casting Process ◽  
Significant Rise ◽  
Layer By Layer ◽  
Cnc Machine ◽  
Hardness Tester ◽  
Wire Arc Additive Manufacturing

Additive manufacturing process is a method of layer by layer joining of materials to create components from three-dimensional (3D) model data. After their introduction in the automotive sector a decade ago, it has seen a significant rise in research and growth. The Additive manufacturing is classified into different types based upon the energy source use in the fabrication process. In our project, we used self-build CNC machine that runs MACH3 software, as well as the MACH3 controller is used to control the welding torch motion for material addition through three axis movement (X, Y and Z). In the project we used ER70 S-6 weld wire for the fabrication and examined its microstructure and mechanical properties. Different layers of the specimen had different microstructures, according to microstructural studies of the product. Rockwell hardness tester used for testing hardness of the product. According to the observation of the part fabricated components using the Wire Arc Additive Manufacturing process outperformed the mechanical properties of mild steel casting process. The product fabricated by Wire Arc Additive Manufacturing process properties is superior to conventional casting process.

scholarly journals HIGH TEMPERATURE OXIDATION OF TI-6AL-4V ALLOY FABRICATED BY ADDITIVE MANUFACTURING. INFLUENCE ON MECHANICAL PROPERTIES

2020 ◽  
Vol 321 ◽  
pp. 03006
Author(s):  
Antoine CASADEBAIGT ◽  
Daniel MONCEAU ◽  
Jonathan HUGUES
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Additive Manufacturing ◽  
Titanium Alloys ◽  
Oxidation Kinetics ◽  
High Temperature Oxidation ◽  
Effect Of Temperature ◽  
Premature Failure ◽  
Temperature Oxidation

Titanium alloys, such as Ti-6Al-4V alloy, fabricated by additive manufacturing processes is a winning combination in the aeronautic field. Indeed, the high specific mechanical properties of titanium alloys with the optimized design of parts allowed by additive manufacturing should allow aircraft weight reduction. But, the long term use of Ti-6Al-4V alloy is limited to 315 °C due to high oxidation kinetics above this temperature [1]. The formation of an oxygen diffusion zone in the metal and an oxide layer above it may reduce the durability of titanium parts leading to premature failure [2, 3]. In this study, Ti-6Al-4V alloy was fabricated by Electron Beam Melting (EBM). As built microstructure evolutions after Hot Isostatic Pressure (HIP) treatment at 920 °C and 1000 bar for 2h were investigated. As built microstructure of Ti-6Al-4V fabricated by EBM was composed of Ti-α laths in a Ti-β matrix. High temperature oxidation of Ti-6Al-4V alloy at 600 °C of as-built and HIP-ed microstructures was studied. This temperature was chosen to increase oxidation kinetics and to study the influence of oxidation on tensile mechanical properties. In parallel, two other oxidation temperatures, i.e. 500 °C and 550°C allowed to access to the effect of temperature on long-term oxidation.

Mechanical properties of granite under real-time high temperature and three-dimensional stress

2020 ◽  
Vol 136 ◽  
pp. 104521
Author(s):  
Xiao Ma ◽  
Guiling Wang ◽  
Dawei Hu ◽  
Yanguang Liu ◽  
Hui Zhou ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Real Time ◽  
Three Dimensional

Additive Manufacturing

2019 ◽  
pp. 165-183 ◽  
Author(s):  
Kamardeen Olajide Abdulrahman ◽  
Esther T. Akinlabi ◽  
Rasheedat M. Mahamood
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Titanium Aluminide ◽  
Three Dimensional ◽  
Physical And Mechanical Properties ◽  
Processing Parameters ◽  
Metal Deposition ◽  
Layer By Layer ◽  
Laser Metal Deposition ◽  
Additive Process

Three-dimensional printing has evolved into an advanced laser additive manufacturing (AM) process with capacity of directly producing parts through CAD model. AM technology parts are fabricated through layer by layer build-up additive process. AM technology cuts down material wastage, reduces buy-to-fly ratio, fabricates complex parts, and repairs damaged old functional components. Titanium aluminide alloys fall under the group of intermetallic compounds known for high temperature applications and display of superior physical and mechanical properties, which made them most sort after in the aeronautic, energy, and automobile industries. Laser metal deposition is an AM process used in the repair and fabrication of solid components but sometimes associated with thermal induced stresses which sometimes led to cracks in deposited parts. This chapter looks at some AM processes with more emphasis on laser metal deposition technique, effect of LMD processing parameters, and preheating of substrate on the physical, microstructural, and mechanical properties of components produced through AM process.

Fabrication and Characterization of Porous TiB2 Ceramic with Three-Dimensional Interconnected Skeleton

2007 ◽  
Vol 336-338 ◽  
pp. 1076-1079
Author(s):  
Chang Qing Hong ◽  
Jie Cai Han ◽  
Xing Hong Zhang ◽  
He Xin Zhang
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Bending Strength ◽  
Three Dimensional ◽  
Pressureless Sintering ◽  
Neck Growth ◽  
Selective Heating ◽  
Fabrication And Characterization ◽  
Tib2 Particles

Porous TiB2 ceramics with a three-dimensional interconnected skeleton were fabricated by high temperature pressureless sintering from fine TiB2 powders. The microstructure of the porous TiB2 ceramic was characterized by the enhanced neck growth between the initially touching particles. This neck growth was ascribed to the selective heating of TiB2 particles with different dimension. The porous structure prepared by the high-temperature sintering exhibited higher bending strength and fracture toughness in the present experiment. The improved mechanical properties of the sintered composites were attributable to the enhanced neck growth by surface diffusion.

An assessment of thermosetting infiltrate in powder-based composites made by additive manufacturing

2018 ◽  
Vol 53 (7) ◽  
pp. 873-882 ◽  
Author(s):  
Breno Ferreira Lizardo ◽  
Luciano Machado Gomes Vieira ◽  
Juan Carlos Campos Rubio ◽  
Tulio Hallak Panzera ◽  
João Paulo Davim
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Porous Structure ◽  
Epoxy Polymer ◽  
Complex Geometry ◽  
Microstructural Analysis ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Small Series ◽  
Dimensional Printing

Rapid prototyping for material deposition or additive manufacturing has been widely used for short time production of parts with complex geometry in small series. The three-dimensional printing process needs post-processing to improve the strength, stiffness and/or surface finish of the parts. Printed parts in pristine condition are generally very brittle with a porous structure, so infiltrates have been introduced to improve their mechanical and physical characteristics. This work investigates the effect of two infiltrates, epoxy polymer and cyanoacrylate, under a vacuum pressure system on the mechanical properties of powder-based composites made by three-dimensional printing. Samples printed under pristine and infiltrated conditions were tested under tensile, flexural, compressive and impact loadings. The infiltrated samples achieved superior mechanical properties, especially when the epoxy polymer was applied via a vacuum system. The microstructural analysis showed that the infiltrates were not able to penetrate the entire sample, revealing a porous structure in the centre, mainly when the cyanoacrylate was used. The epoxy polymer infiltrate was able to substantially increase the mechanical performance of three-dimensional samples, being a promising material when higher structural requirements are required.

scholarly journals Comparison of the mechanical properties of Grade 5 and Grade 23 Ti6Al4V for wire-arc additive manufacturing

2021 ◽  
Vol 121 (7) ◽  
Author(s):  
L. Mashigo ◽  
H. Möller ◽  
C. Gassmann
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Three Dimensional ◽  
Heat Accumulation ◽  
Grade 5 ◽  
Hardness Tests ◽  
Directed Energy ◽  
Wire Arc Additive Manufacturing ◽  
Deposition Technology ◽  
Interstitial Elements

SYNOPSIS Wire-arc additive manufacturing (WAAM) is a directed-energy deposition technology that uses arc welding procedures to produce computer-aided designed parts, such as three-dimensional printed metal components. A challenge of additive manufacturing is the anisotropy. Interstitial elements play a significant role in the mechanical properties of Ti6Al4V of different grades. In this research, the mechanical properties of Grade 5 and Grade 23 Ti6Al4V were compared for this application. Samples were extracted from WAAM-produced Ti6Al4V walls in different directions (horizontal and vertical) and at different positions (top and bottom). The samples were subjected to optical microscopy and tensile and hardness tests. Grade 5 Ti6Al4V samples were found to have greater strength, greater hardness, and lower ductility, owing to the higher content of interstitial elements compared with Grade 23. The bottom samples had higher strength than the top samples, which is attributed to thermal cycling during manufacturing, resulting in different microstructures. Keywords: Ti6Al4V, wire-arc additive manufacturing, anisotropy, heat accumulation, interstitial elements.

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