Instytut Podstawowych Problemów Techniki
Polskiej Akademii Nauk

Pracownicy

mgr inż. Saketh Virupakshi

Zakład Mechaniki Materiałów (ZMM)
doktorant
telefon: (+48) 22 826 12 81 wewn.: 453
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Ostatnie publikacje
1.  Frydrych K., Jarzębska A., Virupakshi S., Kowalczyk-Gajewska K., Bieda M., Chulist R., Skorupska M., Schell N., Sztwiernia K., Texture-based optimization of crystal plasticity parameters: application to zinc and its alloy, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, ISSN: 1073-5623, DOI: 10.1007/s11661-021-06285-7, Vol.52, No.8, pp.3257-3273, 2021

Streszczenie:
Evolutionary algorithms have become an extensively used tool for identification of crystal plasticity parameters of hexagonal close packed metals and alloys. However, the fitness functions were usually built using the experimentally measured stress–strain curves. Here, the fitness function is built by means of numerical comparison of the simulated and experimental textures. Namely, the normalized texture difference index is minimized. The evolutionary algorithm with the newly developed fitness function is tested by performing crystal plasticity parameter optimization for both pure zinc and zinc-magnesium alloy. These materials are promising candidates for bioabsorbable implants due to good biocompatibility and optimal corrosion rate. Although their mechanical properties in the as-cast state do not fulfill the requirements, they can be increased by means of hydrostatic extrusion. The developed modeling approach enabled acquisition of the crystal plasticity parameters and analysis of the active deformation mechanisms in zinc and zinc-magnesium alloy subjected to hydrostatic extrusion. It was shown that although slip systems are the main deformation carrier, compressive twinning plays an important role in texture evolution. However, the texture is also partially affected by dynamic recrystallization which is not considered within the developed framework.

Afiliacje autorów:
Frydrych K. - IPPT PAN
Jarzębska A. - Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Virupakshi S. - IPPT PAN
Kowalczyk-Gajewska K. - IPPT PAN
Bieda M. - Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Chulist R. - Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Skorupska M. - Institute of High Pressure Physics, Polish Academy of Sciences (PL)
Schell N. - inna afiliacja
Sztwiernia K. - Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
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