Elemental Distribution Characteristics Across γ-TiAl:TiAlV Diffusion Bond Interface

P. Sivagnanapalani; Gouthama Gouthama; M. Sujata

doi:10.4028/www.scientific.net/MSF.702-703.718

Paper Titles

Statistical Analysis of Grain Boundaries in the Space of Macroscopic Boundary Parameters
p.697

Importance of Microscale Texture and Grain Boundary Connectivity to Percolation-Dependent Bulk Properties in Polycrystalline Materials
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Evolution of Grain Boundary Texture in Zirconium Alloys
p.710

Origin and Role of Σ3 Boundaries during Thermo-Mechanical Processing of a Ti-Modified Austenitic Stainless Steel
p.714

Elemental Distribution Characteristics Across γ-TiAl:TiAlV Diffusion Bond Interface
p.718

Recrystallization Textures of Cross-Rolled 3.3% Si Electrical Steel and 99.99% Copper Sheets
p.722

Correlation between Texture at Primary Recrystallized State and Magnetic Properties in Grain Oriented Electrical Steels
p.726

Effect of Mn on <100> Texture Evolution in Fe-Si-Mn Alloys
p.730

Modeling the Magnetic Properties of Non-Oriented Electrical Steels Based on Microstructural Parameters
p.734

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Elemental Distribution Characteristics Across γ-TiAl:TiAlV Diffusion Bond Interface

Abstract:

In the present study diffusion bonding of γ-TiAl intermetallic with Ti-6Al-4V alloy was carried out in high vacuum. The diffusion bonding was performed at temperatures of 800°C and 850°C under the constant pressure of 40MPa and at varying time. The interfacial microstructure formed during the diffusion bonding was analysed by SEM and TEM. The elemental distribution characteristics across the interface were also studied by X-ray EDS analysis. From EDS results obtained, some regions were rich in aluminium and some regions were rich in vanadium. Also there are some compositional variations such as chromium and niobium close to the interface zone. However, the composition gradient was not gradual across the interface. Strong evidence has been found for the solute re-distribution in a more localized manner.