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Mechanical and corrosion behaviour of 7075 aluminium matrix composite reinforced with TiC and Al2O3

Vellore Institute of Technology-Subham Jaiswal, Govindasamy Rajamurugan, Prabu Krishnasamy, Yashwardhan Shaswat, Mishra Kaushik
  • Technical Paper
  • 2019-28-0094
To be published on 2019-10-11 by SAE International in United States
Various research regarding new methods of fabrication and modifications of Aluminium alloy to improve the existing properties are going on. The wide application of aluminium in aerospace and automobile Industry, demands improved mechanical properties with little to zero increment in weight. This work is based on the fabrication of hybrid metal matrix composites of 7075 aluminium alloy with the addition of TiC (Titanium Carbide) and Al2O3(Aluminium Oxide) reinforcements is fabricated using stir casting technique. Weight percentage of 5%, Al2O3 8% and Tic 12%, Tic 15% and Al2O3 10%. Samples are prepared for each mass distribution . Varying weight fraction samples are prepared to have a proper comparative study of the mechanical properties. In the fabrication we gradually increased the weight of TiC and Al2O3 as we progressed with the experiment.. The objective is to have a clear idea of mechanical properties variation with variation in reinforcement. Hardness tests is done using optical Brinell Hardness Testing machine . A proper characterisation of the samples was attained by using advanced electron microscopes. Tensile properties of the samples…
 

Turning of Inconel 825 with coated carbide tool applying vegetable-based cutting fluid mixed with CUO, Al2O3 and CNT Nanoparticles by MQL

Vellore Institute of Technology-Venkatesan Kannan, Devendiran Sundararajan
  • Technical Paper
  • 2019-28-0060
To be published on 2019-10-11 by SAE International in United States
Inconel 825 is nickel (Ni)-iron (Fe)-chromium (Cr) alloy with additions of copper (Cu), molybdenum (Mo), and titanium (Ti). The alloy has excellent resistance to corrosion and is often the most cost-effective alloy in sulphuric acid piping vessels and chemical process equipment. No attempt of applying MQL with the addition of nanoparticles was reported conferring to the works accessed. The present study is focused on evaluating the effect of the addition of nanoparticles (CUO, Al2O3 and CNT) in vegetable oil applied by MQL mode during turning of Inconel 825 with coated carbide tool. Cutting force, surface roughness and tool wear are evaluated. The results showed that the addition of nCNT substantially improved the machining performance, smaller flank and crater wear on the tool edge, while the adhesion and abrasion are observed as wear mechanism and better results are obtained at 0.5% of nCNT+ vegetable oil to produce the lowest values.
 

Multi response optimization on machining Titanium alloy using Taguchi-DEAR analysis in abrasive water jet cutting

SRM Institute Of Science And Technology-Muthuramalingam Thangaraj, Akhtar Atif
Tishk International University-Ganesh Babu Loganathan
  • Technical Paper
  • 2019-28-0070
To be published on 2019-10-11 by SAE International in United States
It is very important to derive the optimal process parameters combination in EDM process to enhance its efficacy. In the present study an attempt has been made to perform multiple criteria decision making using Taguchi-Methodology in EDM process. Titanium (Ti-6Al-4V) alloy has been machined as workpiece specimen with tungsten carbide tool electrode. Material removal rate, surface roughness and tool wear rate has been used as performance measures. From the experimental results, the optimal process parameters has been found. It has been observed Peak current has more influential nature on determining the performance measures in EDM process.
 

Surface modification of Aluminium alloy 5083 reinforced with Cr2O3/TiO2 by friction stir process

Bannari Amman Institute of Technology-Dinesh Dhanabalan
Vellore Institute of Technology-Adarsh Singh, Govindasamy Rajamurugan, Prabu Krishnasamy
  • Technical Paper
  • 2019-28-0179
To be published on 2019-10-11 by SAE International in United States
Surface properties have vital role in overall performance of parts like brake shoe pad. The mechanical and residual stress measurements of aluminium alloy 5083 were investigated on friction stir processed plates using reinforcements of chromium oxide (Cr2O3) and Titanium di oxide (TiO2) separately as well as combination of these powders. A comparative analysis was performed to study the effects of reinforcements and tool type (cylindrical and threaded) keeping the FSP parameters and volume fraction of reinforcements as constant. This investigation shows that there was a significant increase in surface hardness (118 HRC) as well as decrease in residual stress compare to the base metal. This study also reveals that the threaded tool with a reinforcement of Cr2O3 and TiO2 reflected better mechanical properties than the cylindrical tool. The SEM image shows that the even distributions of reinforcement particles are presence in the processed zone. Mechanical properties like surface roughness, surface hardness and residual stress of samples were investigated. The significant improvement in the surface plates can be used in brake pad in automobile industries.
 

Titanium Hydraulic Tubing, Ti-3Al-2.5V Cold Worked and Stress Relieved, Up to 35000 kPa (5080 psi), Requirements for Qualification Testing and Control

G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
  • Aerospace Standard
  • AS5620C
  • Current
Published 2019-06-04 by SAE International in United States

This SAE Aerospace Standard (AS) shall be used in conjunction with AMS4946 to provide requirements for qualification testing and for qualified products listing (QPL) and qualified manufacturer listing (QML) for Ti-3Al-2.5V cold worked and stress relieved hydraulic system tubing. The basic tubing shall comply with the requirements of AMS4946.

 

Machining Titanium Aero-Frames

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_11
Published 2019-06-01 by SAE International in United States

The rise of titanium for aerospace applications has been well documented in recent years. Equally, the challenges associated with the efficient, productive and high-quality machining of this popular material, have also been a topic of debate and scrutiny. Of course, every machine shop wants optimized performance from its cutters when milling titanium, but this can prove less than straightforward without the right technology and know-how in place. Today, however, thanks to a breakthrough in this area, things are beginning to change.

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Aerospace & Defense Technology: June 2019

  • Magazine Issue
  • 19AERP06
Published 2019-06-01 by SAE International in United States
Eyes in the Sky Rugged High-Speed Cameras Capture Critical Flight Test Video DataPanoramic Thermal Imaging Technology A New Concept in Naval DefenseCoating Technology Enables Effective Missile CountermeasuresFACE™ - Future Airborne Capability Environment Diminishing U.S. Combat Superiority Drives New Software Development RequirementsBroadband 1.2- and 2.4-mm Gallium Nitride (GaN) Power Amplifier DesignsMulti-Agent RF Propagation SimulatorElectrical Characterization of Crystalline UO2, THO2 and U0.71TH0.29O2 Evaluating the suitability of advanced alloys for use in uranium-based neutron detectors.ONR Short Pulse Research, Evaluation and non-SWaP Demonstration for C-sUAV Study Research project is designed to map small unmanned aerial vehicle (sUAV) effects space, empirically and by simulation, as a function of high power microwave (HPM) waveform to develop effective countermeasures.Matrix-Free Assisted Laser Desorption Ionization Using Metal-Organic FrameworksMachining Titanium Aero-FramesGetting the Most Out of Industrial CT Scanning Industrial CT analysis software uncovers aerospace manufacturing defects that scanning alone might miss.Aerospace Work Platforms - More than Meets the Eye Today's work platforms are far more complex than the simple designs of the past.
 

Machining Titanium Aero-Frames

  • Magazine Article
  • TBMG-34543
Published 2019-06-01 by Tech Briefs Media Group in United States

The rise of titanium for aerospace applications has been well documented in recent years. Equally, the challenges associated with the efficient, productive and high-quality machining of this popular material, have also been a topic of debate and scrutiny. Of course, every machine shop wants optimized performance from its cutters when milling titanium, but this can prove less than straightforward without the right technology and know-how in place. Today, however, thanks to a breakthrough in this area, things are beginning to change.

 

Nickel-Iron Alloy, Magnetic, Sheet and Strip 50Ni - 50Fe Annealed, Forming Grade

AMS E Carbon and Low Alloy Steels Committee
  • Aerospace Material Specification
  • AMS7717E
  • Current
Published 2019-05-29 by SAE International in United States
This specification covers a magnetically soft nickel-iron alloy in the form of sheet and strip.
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Nickel-Iron Alloy, Magnetic, Sheet and Strip 50Ni - 50Fe Stamping Quality, Half-Hard Temper

AMS E Carbon and Low Alloy Steels Committee
  • Aerospace Material Specification
  • AMS7719E
  • Current
Published 2019-05-29 by SAE International in United States
This specification covers a magnetic nickel-iron alloy in the form of sheet and strip.
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