Features of Structural-Phase Transformations during Oxidation of Metals with Bulk Submicrocrystalline Structure and Fine Metal Powders

2021 ◽  
Vol 887 ◽  
pp. 275-280
Author(s):  
A.V. Korshunov

The oxidation processes for compact and powdery samples of titanium, copper, and molybdenum with different volume structure and dispersivity were studied using thermal analysis, electron microscopy, and X-ray diffraction. It is established that producing of metals with a modified structure under conditions of high-energy impact (severe plastic deformation, electric explosion of a thin wire) in accordance with intermediate annealing leads to an increase in the content of oxygen in the form of solid solutions and oxides; the oxide component’s share, form and localization within the material depend on physicochemical properties of both metal and oxide . It is shown that the structural-phase transformations of the oxide component during heating of fine-grained metals and powders have a significant effect on the parameters of the oxidation process of such materials. The thermally induced effects in the oxygen-containing components might play a critical role for the structure stability during long-term use of such materials under cyclic thermomechanical impacts.

2020 ◽  
Vol 32 (36) ◽  
pp. 365404
Author(s):  
I O Kruhlov ◽  
O V Shamis ◽  
N Y Schmidt ◽  
M V Karpets ◽  
S Gulyas ◽  
...  

2005 ◽  
Vol 5 (5) ◽  
pp. 729-732 ◽  
Author(s):  
H. K. Poswal ◽  
Nandini Garg ◽  
Surinder M. Sharma ◽  
E. Busetto ◽  
S. K. Sikka ◽  
...  

2020 ◽  
Vol 26 (S2) ◽  
pp. 632-633
Author(s):  
Pawan Kumar ◽  
James Horwath ◽  
Alexandre Foucher ◽  
Chrisopher Price ◽  
Natalia Acero ◽  
...  

1997 ◽  
Vol 45 (3) ◽  
pp. 999-1004 ◽  
Author(s):  
E. Cesari ◽  
V.A. Chernenko ◽  
V.V. Kokorin ◽  
J. Pons ◽  
C. Segui

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