Laser Solid-Phase Alloyage of Aluminium with Chromium
M. S. Kashkarov, O. V. Filatov, O. E. Pogorelov
G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine
Received: 29.09.2016. Download: PDF
With the use of the mass transfer in non-equilibrium conditions generated by pulsed laser irradiation in the Al + Cr-film system, a solid-phase alloyage of aluminium surface with chromium is carried out. Effectiveness of alloyage is estimated by microdurometer method, which also allows using a developed new technique to estimate the penetration depth of Cr in aluminium, the average value of which amounts to $\cong$ 10 microns. The results of solid-phase alloyage are analysed using X-ray method; they permit to determine a formation of supersaturated solid solution with 0.66 at.% Cr in the aluminium surface layer with microhardness $HV$ = 1500 MPa.
Key words: laser alloying, alloyed layer, concentration of point defects, interstitial solid solution, substitutional solid solution, nonequilibrium solid solution.
PACS: 61.72.S-, 61.72.U-, 61.80.Ba, 62.20.Qp, 81.40.Wx, 81.65.-b, 81.70.Jb
Citation: M. S. Kashkarov, O. V. Filatov, and O. E. Pogorelov, Laser Solid-Phase Alloyage of Aluminium with Chromium, Metallofiz. Noveishie Tekhnol., 39, No. 1: 83—91 (2017) (in Russian)