The influence of reinforcing particles on mechanical and tribological properties and microstructure of the steel-TiB₂ composites

• Autorzy: Sulima I. , Jaworska L. , Wyżga P. , Perek-Nowak M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The present work aims to investigate the effect of the reinforcing ceramic particles on the mechanical and tribological properties and microstructure of the steel-TiB2composites. Design/methodology/approach: The austenitic AISI316L stainless steel reinforced with 10 vol.% and 20 vol.% TiB2 particles was produced using the high temperature-high pressure (HT-HP) method. The sintering process was carried out at pressure of 7.0±0.2 GPa and temperature of 1200°C for 60 seconds. Density of sintered materials was measured according to the Archimedes principle. Mechanical properties were determined by Vickers hardness and compression test. The friction coefficient was measured using ball-on-disk method. This tests were realized at room temperature. Microstructural observations were carried out using scanning electron microscopy. Findings: The materials were characterized by very high level of consolidation, which was equal to 96% for composites with 10 vol.% and 20 vol.% TiB2particles. The results show that the composites exhibited higher Young’s modulus, Vickers hardness and compression strength when compared with conventionally austenitic AISI316L stainless steel. The addition of 20 vol.% of TiB2particles to steel caused significant reduction of the values of friction coefficient. The SEM studies of composites allowed to reveal TiB2phase along grain boundaries. In case of the composite with 20 vol.% TiB2, the continuous layer of ceramic along the grain boundaries was observed. Practical implications: The obtained test results may be used to optimize the sintering process of the steel-TiB2, composites by high temperature methods. These results may be used to design new materials i.e. austenitic stainless steel reinforced with TiB2, ceramic. Originality/value: The work provide essential information on the effect of the TiB2, particles on the mechanical and tribological properties of composites.

Słowa kluczowe

EN

composites; austenitic stainless steel; TiB2; sintering; hardness; compression strength; friction coefficient

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 48, nr 1
• Strony: 52--57
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Sulima I.

• Institute of Technology, Pedagogical University, ul. Podchorążych 2, 30-084 Kraków, Poland

autor

Jaworska L.

• Institute of Technology, Pedagogical University, ul. Podchorążych 2, 30-084 Kraków, Poland
• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

autor

Wyżga P.

• Institute of Advanced Manufacturing Technology, ul. Wrocławska 37a, 30-011 Kraków, Poland

autor

Perek-Nowak M.

• Faculty of Non-ferrous Metal, University of Science and Technology, Al. Mickiewicza 30, 30-065 Kraków, Poland

Bibliografia

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