Partner: Jan Bonarski

Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)

Recent publications
1.Ranachowski Z., Pawełek A., Drzymała P., Bonarski J., Lewandowski M., Ozgowicz W., Light alloys for application as engine parts – comparison of properties of three materials, ZESZYTY NAUKOWE / AKADEMIA MORSKA W SZCZECINIE, ISSN: 1733-8670, Vol.39, No.111, pp.128-132, 2014
Abstract:

This paper discusses the mechanical properties, microstructure and crystallographic texture of light alloys made on the base of aluminium, magnesium and lithium. An acoustic emission (AE) technique was applied to detect the moment of twinning or slip activation during compression and channel – die tests to extend the comprehension on the nature of the plastic deformation processes occurring in the investigated alloy s

Keywords:

hcp metals, aluminium and magnesium alloys, plastic deformation, mechanical twinning, crystallographic texture, acoustic emission

Affiliations:
Ranachowski Z.-IPPT PAN
Pawełek A.-other affiliation
Drzymała P.-Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Bonarski J.-Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Lewandowski M.-IPPT PAN
Ozgowicz W.-other affiliation
2.Swiatek Z., Michalec M., Levintant-Zayonts N., Bonarski J., Budziak A., Bonchyk O., Savitskij G., Structural Evolution of Near-Surface Layers in NiTi Alloy Caused by an Ion Implantation, ACTA PHYSICA POLONICA A, ISSN: 0587-4246, Vol.120, No.1, pp.75-78, 2011
Abstract:

The results of X-ray diffraction studies on structural changes in the near-surface layers in the NiTi alloy caused by nitrogen-ion implantation with the energy E = 50 keV and the fluence D = 1018cm°2 are presented. X-ray diffractometry, using the Philips diffractometer type X’Pert in the Bragg–Brentano geometry, was used to identify the phase composition of NiTi alloy. For layer by layer analysis of structural changes in the near-surface layers, the D8 Discover Bruker diffractometer with polycapilar beam optics was used. The ion-implanted NiTi alloy in the near-surface layer exhibits five phases: the dominating austenite phase, two martensitic phases and a small amount of the Ni4Ti3 and NTi phases. Along with the decreasing thickness of the near-surface layer investigated in material an increasing fraction of the Ni4Ti3 and NTi phases was observed. With the thickness of this layer about 340 nm, besides still existing the austenite, Ni4Ti3 and NTi phases, only one martensitic phase is present in the alloy. Further decrease of the thickness of the near-surface layer to about 170 nm leads to the increasing fraction of the Ni4Ti3 and NTi phases.

Keywords:

X-ray diffraction, ion implantation, shape memory alloy, nitinol, phase composition

Affiliations:
Swiatek Z.-Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Michalec M.-Jagiellonian University (PL)
Levintant-Zayonts N.-IPPT PAN
Bonarski J.-Institute of Metallurgy and Materials Science, Polish Academy of Sciences (PL)
Budziak A.-other affiliation
Bonchyk O.-Ya.S. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics NASU (UA)
Savitskij G.-Ya.S. Pidstryhach Institute for Applied Problems of Mechanics and Mathematics NASU (UA)

Conference abstracts
1.Drzymała P., Bonarski J., Ranachowski Z., The role of microstructure in deformation mechanisms in extruded AZ31 magnesium alloy, SolMech 2014, 39th Solid Mechanics Conference, 2014-09-01/09-05, Zakopane (PL), pp.295-296, 2014