Influence of Shear Component of Load Under the Friction on a Structure–Phase State and Wear of Surface Layer of Steel 1045
B. M. Mordyuk$^{1}$, O. O. Mikosyanchyk$^{2}$
$^{1}$G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine
$^{2}$National Aviation University, 1 Cosmonaut Komarov Ave., 03058 Kyiv, Ukraine
Received: 03.05.2017; final version - 30.05.2017. Download: PDF
The influence of load shear component under the friction on both the microstructure and the phase state of the surface layers of 1045 steel is studied. As established by x-ray analysis, the increase in shear-stress component $Р_{SH}$ results in reduction of size of coherent scattering areas (20–50 nm) and in changes of the lattice microstrains of ferrite, and in the formation of residual compressive macrostresses (300–700 MPa). The growth in $Р_{SH}$ (from 3% to 40% of the normal component) results in significant increase of microhardness of the surface layer of 100–250 $\mu$m thickness. The wear magnitude depends not only on the grain size and hardness, but also on the phase composition of the surface layers formed by mechanochemical reactions on the contact surfaces during the friction process.
Key words: shear-stress component, surface layer, microstructure, microhardness, wear, steel 1045.
URL: http://mfint.imp.kiev.ua/en/abstract/v39/i06/0795.html
DOI: https://doi.org/10.15407/mfint.39.06.0795
PACS: 62.20.Qp, 68.35.bd, 68.35.Dv, 68.35.Fx, 68.35.Gy, 68.35.Rh, 81.40.Pq
Citation: B. M. Mordyuk and O. O. Mikosyanchyk, Influence of Shear Component of Load Under the Friction on a Structure–Phase State and Wear of Surface Layer of Steel 1045, Metallofiz. Noveishie Tekhnol., 39, No. 6: 795—813 (2017) (in Ukrainian)