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Investigation of thermal shock resistance of CeO2 coating on Titanium alloy by magnetron sputtering

AAA College of Engineering & Techology-Balamurugan Subburaj
Mepco Schlenk Engineering College-Bala Manikandan Cheirmakani, Balamurugan Pandian, Lionel Beneston
  • Technical Paper
  • 2019-28-0103
To be published on 2019-10-11 by SAE International in United States
Titanium alloy (Grade V) is used in aerospace, medical, marine and chemical processing industries. To improve the thermal shock resistance and corrosion resistance of the titanium alloy at elevated temperatures, Thermal barrier coating (TBC) has been predominantly used. Cerium oxides have been proposed as TBC, due to their high thermal expansion coefficient, higher thermal shock resistance, good adhesion strength, low corrosion rate and excellent tribological performance. In this study, CeO2 were coated on Titanium alloy by magnetron sputtering by varying the deposition time. The microstructure and mechanical properties of CeO2 coatings were systematically investigated. Deposition time was varied as 30 mins, 60 mins and 90 mins respectively, to achieve the variation in thickness of the coating on the substrate. The thickness of the coated specimen was measured by atomic force microscopy and found to be 500 nm, 180 nm and 70 nm respectively. Surface roughnesses of the coated surface are 152.28 nm, 86.25 nm and 18.65 nm. The Vickers hardness was found to increase with increasing amount of CeO2. Corrosion ability of the coated specimen…
 

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.
 

Improving Competitiveness of Additive Manufacturing Aerospace Serial Parts

LISI Aerospace-Maxime Gas, Alexis Rene-Corail, Sebastien Eyrignoux, Guillaume Iker, Stephane Sudre
  • Technical Paper
  • 2019-01-1900
To be published on 2019-09-16 by SAE International in United States
The interest of selective laser melting technology for aerospace parts is very high due to their high complexity and their freedom of design which allow functions integration. However, the competitiveness of Laser Beam Melting (LBM) machines for aerospace industry is limited by two major road blocks. On the one hand, basic parametric set sold with LBM machines are more oriented to historical qualification than productivity rates. For instance, the ongoing qualification on EOS M290 by AIRBUS COMMERCIAL AIRCRAFT only enables us to produce a hundred pieces per machine per year. On the other hand, wasted times between two consecutive manufacturing batches are significant and are impacting the yearly output of the machines. The present project focuses on two activities, focusing on the largest available machines, XLINE2000R and M400, in order to maximize the amount of pieces per build. The first one was the improvement of parametric set productivity, to reduce production time, while keeping material and mechanical properties. We focused on main aerospace materials: titanium alloys, aluminum alloys (Scalmalloy®) and nickel-chromium-based superalloys. The second one…
 

Steel, Corrosion and Heat Resistant, Bars, Wire, Forgings, Mechanical Tubing, and Rings 12Cr - 0.12Cb (Nb) (410 Modified) Ferrite Controlled, Annealed

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5609E
  • Current
Published 2019-07-01 by SAE International in United States
This specification covers an aircraft-quality, corrosion and heat-resistant steel in the form of bars, wire, forgings, mechanical tubing, flash-welded rings, and stock for forging or flash-welded rings.
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Insert - Thin Wall, Self-Locking Short and Long Length Installation and Removal of

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS3507C
  • Current
Published 2019-07-01 by SAE International in United States
This SAE Aerospace Standard (AS) provides minimum design, installation (by manual and power methods) and removal requirements for AS3504 and AS3505 thin wall inserts and is applicable when specified on engineering drawings or in procurement documents.
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Titanium Alloy, Bars, Wire, and Rings 5Al - 2.5Sn Annealed, 110 ksi (758 MPa) Yield Strength

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS4926P
  • Current
Published 2019-06-20 by SAE International in United States
This specification covers a titanium alloy in the form of bars, wire, flash welded rings 4.000 inches (101.60 mm) and under in nominal diameter or least distance between parallel sides and 16 in2 (103 cm2) and under in cross-sectional area, and stock of any size for flash welded rings.
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Ethylene Propylene Rubber Phosphate Ester Resistant 65 - 75

AMS CE Elastomers Committee
  • Aerospace Material Specification
  • AMS3253B
  • Current
Published 2019-06-17 by SAE International in United States
This specification covers an ethylene propylene elastomer in the form of molded sheet and shapes, color coded purple per ARP1527.
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Training and Approval of Heat-Treating Personnel

AMS B Finishes Processes and Fluids Committee
  • Aerospace Standard
  • ARP1962B
  • Current
Published 2019-06-11 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) describes training and approval of personnel performing certain heat-treating and associated operations that could have a material impact on the properties of materials being heat treated. It also recommends that only approved personnel perform or monitor the functions listed in Table 1.
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Titanium Alloy Bars, Forgings, and Rings 6Al - 4V Extra Low Interstitial (ELI) Duplex Annealed, Fracture Toughness

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS4931F
  • Current
Published 2019-06-11 by SAE International in United States
This specification covers a titanium alloy in the form of bars 6.000 inches (152.40 mm) and under in nominal diameter or least distance between parallel sides, forgings and flash welded rings 6.000 inches (152.40 mm) and under in thickness, and stock for forging and stock for flash welded rings of any size.
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Standard Practice for Production, Distribution, and Procurement of Metal Stock

AMS G Titanium and Refractory Metals Committee
  • Aerospace Standard
  • AS6279B
  • Current
Published 2019-06-10 by SAE International in United States
This SAE Aerospace Standard (AS) establishes requirements applicable to metal stock that is ordered and produced in accordance with an Aerospace Material Specification (AMS). Topics include producer requirements, distributor requirements, size and grain orientation nomenclature, and purchaser ordering information to distributors. Requirements of this document have been developed to address titanium and titanium alloys, aluminum and aluminum alloys, carbon and alloy steels, and corrosion and heat-resistant alloys.
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