The computer simulation of internal stresses of tool gradient materials reinforced with the WC-Co

• Autorzy: Dobrzański L. , Kwaśny W. , Dołżańska B.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The general topic of this paper is the computer simulation with the use of finite element method for determining the internal stresses in tool gradient materials WC-Co obtained in the powder metallurgy process in different temperatures of 1400°C + HIP and 1460°C + HIP. Design/methodology/approach: The following research studies have been carried out a new group of sintered tool gradient materials, tungsten carbide with cobalt matrix, modeling of stresses was performed used of finite elements method in ANSYS environment, and the experimental values of stresses were determined basing on the X-ray diffraction patterns. Findings: The developed model of the tool consists of four layers with different contents of tungsten carbide and the concentration of cobalt by using the finite element method allows to simulate the impact of sintering temperature on the stress occurring in the material. On the basis of the model, it was found that by properly controlled treatment technology, able to induce compressive stresses in the surface layer of material, thus increasing the resistance of the material on the formation and propagation of cracks. Research limitations/implications: It was confirmed that using of finite element method can be a way for Computer simulation of stresses, strains and displacements of the fabricated gradient material depending on the sintering temperature. Results reached in this way are satisfying and in slight degree differ from results reached by experimental method. However for achieving better calculation accuracy in further researches it should be developed given model which was presented in this paper. Originality/value: The obtained results show the possibility to manufacture TGMs on the basis of different portions of cobalt reinforced with hard ceramics particles in order. The computer simulation is based on the finite element method, which allows to better understand the interdependence between parameters of process and choosing optimal solution.

Słowa kluczowe

EN

cemented carbide; powder metallurgy; finite element method

PL

węglik spiekany; metalurgia proszków; metoda elementów skończonych

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2012
• Tom: Vol. 57, nr 1
• Strony: 38--44
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Dobrzański L.

autor

Kwaśny W.

autor

Dołżańska B.

• Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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