Partner: Judyta Sienkiewicz

Military University of Technology (PL)

Recent publications
1.Golasiński K.M., Janiszewski J., Sienkiewicz J., Płociński T., Zubko M., Świec P., Pieczyska E.A., Quasi-static and dynamic compressive behavior of Gum Metal: experiment and constitutive model, METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, ISSN: 1073-5623, DOI: 10.1007/s11661-021-06409-z, pp.1-14, 2021

The quasi-static and high strain rate compressive behavior of Gum Metal with composition Ti-36Nb-2Ta-3Zr-0.3O (wt pct) has been investigated using an electromechanical testing machine and a split Hopkinson pressure bar, respectively. The stress–strain curves obtained for Gum Metal tested under monotonic and dynamic loadings revealed a strain-softening effect which intensified with increasing strain rate. Moreover, the plastic flow stress was observed to increase for both static and dynamic loading conditions with increasing strain rate. The microstructural characterization of the tested Gum Metal specimens showed particular deformation mechanisms regulating the phenomena of strain hardening and strain softening, namely an adiabatic shear band formed at ~ 45 deg with respect to the loading direction as well as widely spaced deformation bands (kink bands). Dislocations within the channels intersecting with twins may cause strain hardening while recrystallized grains and kink bands with crystal rotation inside the grains may lead to strain softening. A constitutive description of the compressive behavior of Gum Metal was proposed using a modified Johnson–Cook model. Good agreement between the experimental and the numerical data obtained in the work was achieved.

Golasiński K.M.-IPPT PAN
Janiszewski J.-Military University of Technology (PL)
Sienkiewicz J.-Military University of Technology (PL)
Płociński T.-Warsaw University of Technology (PL)
Zubko M.-other affiliation
Świec P.-other affiliation
Pieczyska E.A.-IPPT PAN

Conference abstracts
1.Pieczyska E.A., Staszczak M., Janiszewski J., Sienkiewicz J., Investigation of thermomechanical properties during biaxial loading of βTi alloy named Gum Metal that combines high strength to high elastic properties, 67th Course: Progress in Photoacoustic & Photothermal Phenomena, Focus on Biomedical, Nanoscale, NDE, Gas Sensing and Thermopysical Phenomena and Technologies, 2023-09-24/10-01, Erice (IT), No.D3, pp.1-1, 2023
2.Pieczyska E.A., Kowalczyk-Gajewska K., Staszczak M., Golasiński K., Judyta Sienkiewicz J., Janiszewski J., MECHANICAL BEHAVIOR AND THE RELATED TEMPERATURE CHANGES INVESTIGATED FOR β Ti ALLOY - GUM METAL DURING LOADING IN WIDE RANGE OF THE STRAIN RATES, ICPDF 2023, International Conference on Plasticity, Damage, and Fracture, 2023-01-03/01-09, Punta Cana (DM), pp.1-1, 2023
3.Pieczyska E., Golasiński K., Staszczak M., Janiszewski J., Sienkiewicz J., Takeda K., TI-BETA ALLOY - GUM METAL AND TINI SHAPE MEMORY ALLOY SUBJECTED TOCOMPRESSION LOADING IN WIDE RANGE OF THE STRAIN RATES, CMM-SolMech 2022, 24th International Conference on Computer Methods in Mechanics; 42nd Solid Mechanics Conference, 2022-09-05/09-08, Świnoujście (PL), No.279, pp.1-1, 2022
4.Pieczyska E.A., Golasiński K.M., Staszczak M., Janiszewski J., Sienkiewicz J., Kuramoto S., Takesue N., GUM METAL SUBJECTED TO COMPRESSION LOADING IN A WIDE SPECTRUM OF THE STRAIN RATES, ICEM, 19th International Conference on Experimental Mechanics, 2022-07-17/07-21, Kraków (PL), pp.270-271, 2022
5.Pieczyska E.A., Golasiński K., Staszczak M., Janiszewski J., Sienkiewicz J., Ti alloy - Gum Metal subjected to compression in wide range of the strain rates, 64th Course: PROGRESS IN PHOTOACOUSTIC & PHOTOTHERMAL PHENOMENA, 2021-10-16/10-23, ERICE-SICILY (IT), No.C9, pp.52-52, 2021