Production and Characterization of Niobium Toughened Ti-TiAl₃ Metallic-Intermetallic Composite

• Authors: T. Yener , S. Zeytın
• Languages of publication: EN

Abstracts

EN

Ti-TiAl₃ in situ composites with 10 wt.% Nb were successfully prepared from Ti, Al, and Nb metallic powders by powder metallurgy processing technique of electric current activated/assisted sintering. The current and process time used for producing metallic-intermetallic composites were 2000 A and 90 s, respectively. In terms of fracture toughness, effects of addition of ductile niobium phase to Ti-TiAl₃ composites were investigated. According to SEM-EDS and XRD results, the synthesized composites mainly consisted of TiAl₃ matrix and dispersive Nb reinforcing phases, as well as ductile Ti phases. Hardness and fracture toughness values of the samples were measured by Vickers hardness tester under loads of 100 g and 10 kg, respectively. Fracture toughness value of TiAl₃ intermetallic composites was increased with Nb ductile phase addititon from 1.69± 0.05 MPa m^{1/2} to 5.23± 0.3 MPa m^{1/2}.

Keywords

EN

46.50.+a; 72.80.Tm

Discipline

• 46.50.+a: Fracture mechanics, fatigue and cracks(see also 62.20.M- Structural failure of materials in mechanical properties of condensed matter)
• 72.80.Tm: Composite materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 132
• Issue: 3
• Pages: 941-943

Dates

published

2017-09

Contributors

author

T. Yener

• Sakarya University, Metallurgy and Materials Department, Sakarya, Turkey

author

S. Zeytın

• Sakarya University, Metallurgy and Materials Department, Sakarya, Turkey

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Identifiers

DOI

10.12693/APhysPolA.132.941