Increased Wear and Oxidation Resistance of Titanium Aluminide Alloys by Laser Cladding

Sörn Ocylok; Andreas Weisheit; Ingomar Kelbassa

doi:10.4028/www.scientific.net/AMR.278.515

Paper Titles

Development of Chromium and Aluminum Coatings on Superalloys by Pack-Cementation Technique
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Intermetallic Ti-Al-Cr Based Layers and Zirconia Topcoats Deposited on Gamma Titanium Aluminides for Environmental Protection
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Structure of NiCrAlY Coatings Deposited on Oriented Single Crystal Superalloy Substrates by Laser Cladding
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Laser Shock Adhesion Test (LASAT) of Electron Beam Physical Vapor Deposited Thermal Barrier Coatings (EB-PVD TBCs)
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Increased Wear and Oxidation Resistance of Titanium Aluminide Alloys by Laser Cladding
p.515

Evolution of the Diffusion Layer in a CMSX4 Single Crystal Superalloy
p.521

Microstructural Evolution of Mo-Si-B Ternary Alloys through Heat Treatment at 1800°C
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Microstructural Properties of Nb-Si Based Alloys Manufactured by Powder Metallurgy
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Design Considerations and Strengthening Mechanisms in Developing Co-Re-Based Alloys for Applications at + 100°C above Ni-Superalloys
p.539

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Increased Wear and Oxidation Resistance of Titanium Aluminide Alloys by Laser Cladding

Abstract:

A process layout for laser cladding of layers on substrates of titanium aluminides using state-of-the-art and modified (additions of Si and TiB2) TiAl alloys is presented. The process involves a preheating of the samples to reduce thermal stresses and cladding in an inert gas atmosphere with an oxygen content lower than 30 ppm. These conditions lead to crack free layers and low surface oxidation. Microstructure and hardness of the layers are investigated. The abrasive wear resistance of the cladded layers in comparison to the base material is tested with promising results. Finally results of the oxidation behavior are shown and prove the increased performance of modified TiAl layers in comparison to the base material.

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Periodical:

Advanced Materials Research (Volume 278)

Pages:

515-520

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.278.515

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Online since:

July 2011

Authors:

Sörn Ocylok, Andreas Weisheit, Ingomar Kelbassa

Keywords:

Laser Cladding, Oxidation Resistance, Titanium Aluminide, Wear Resistance

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