Open AccessDynamic deformations tests of Ni3Al based intermetallic alloy by using the split Hopkinson pressure bar technique
Author(s) -
Paweł Jóźwik,
Mateusz Kopeć,
Wojciech Polkowski,
Z. Bojar
Publication year - 2019
Publication title -
journal of mining and metallurgy. section b, metallurgy/journal of mining and metallurgy. section b, metallurgy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.42
H-Index - 20
eISSN - 2217-7175
pISSN - 1450-5339
DOI - 10.2298/jmmb181113014j
Subject(s) - intermetallic , materials science , split hopkinson pressure bar , dynamic recrystallization , strain rate , alloy , microstructure , electron backscatter diffraction , bar (unit) , deformation (meteorology) , dynamic range compression , metallurgy , composite material , hot working , physics , meteorology
In this work, the Ni3Al-based intermetallic alloy was subjected to room temperature dynamic plastic deformation tests by using a split Hopkinson pressure bar technique. The dynamic compression processes were carried out at strain rates in the range of =(1.9x102 / 1x104 s-1). A strong impact of applied deformation conditions on microstructure and mechanical properties evolution in the examined Ni3Al intermetallic, was documented. Generally, very high maximum compressive stress values were obtained, reaching 5500 MPa for the sample deformed at the highest strain rate (i.e. ??=1x104 s-1). The results of performed SEM/EBSD evaluation point towards an occurrence of dynamic recovery and recrystallization phenomena in Ni3Al samples deformed at high strain rates.