Simulation of the tensile behaviour of two-phase titanium alloy with diffusion hardened layer

• Autorzy: Ziaja W.
• Języki publikacji: EN

Abstrakty

EN

Because of the poor tribological properties titanium alloys are often surface treated in order to improve their load bearing capacity and wear resistance. Various surface engineering techniques are applied to produce hard single or multilayered coatings, composed of various intermetallic phases, e.g. TiN, Ti2N, Ti(C,N), TiAl and others. During thermochemical treatment hardened diffusion layer can also be formed. It acts as a support for the coating that possesses significantly higher stiffness and strength properties than substrate material, and can improve durability of the elements due to reduction of localized plastic deformation of the substrate in case of stress eoncentration resulting from elastic coating cracking. In the paper results of the computational analysis of tensile tests of two-phase titanium alloy were summarized, both with and without diffusion layer. Influence of the volume fraction of a and /3 phases, their strength properties, depth and strength of the diffusion layer on plastic deformation behaviour of the alloy was determined.

Słowa kluczowe

EN

titanium alloys; thermochemical treatment; diffusion layer; tensile test; finite element method

• Wydawca: Politechnika Gdańska
• Czasopismo: Advances in Materials Science
• Rocznik: 2007
• Tom: Vol. 7, nr 3(13)
• Strony: 131--136
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Ziaja W.

• Rzeszów University of Technology, Faculty of Mechanical Engineering and Aeronautics, Department of Materials Science, Rzeszów, Poland

Bibliografia

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