Electronic Excitation during Plastic Deformation and Fracture of Crystals

1991 ◽  
Vol 195 (1-2) ◽  
pp. 153-153
Author(s):  
U. Messerschmidt
Keyword(s):  
Plastic Deformation ◽  
Electronic Excitation ◽  
Deformation And Fracture

The effect of phase transformations in the process of electrom-beam 3D-printing and post-built heat treatment on the peculiarities of plastic deformation and fracture of high nitrogen Cr-Mn steel

2021 ◽  
pp. 10-17
Author(s):  
E.G. Astafurova ◽  
◽  
K.A. Reunova ◽  
S.V. Astafurov ◽  
M.Yu. Panchenko ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Plastic Deformation ◽  
Electron Beam ◽  
Phase Composition ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Raw Material ◽  
High Nitrogen ◽  
Two Phase ◽  
Deformation And Fracture

We investigated the phase composition, plastic deformation and fracture micromechanisms of Fe-(25-26)Cr-(5-12)Mn-0.15C-0.55N (wt. %) high-nitrogen chromium-manganese steel. Obtained by the method of electron-beam 3D-printing (additive manufacturing) and subjected to a heat treatment (at a temperature of 1150°C following by quenching). To establish the effect of the electron-beam 3D-printing process on the phase composition, microstructure and mechanical properties of high-nitrogen steel, a comparison was made with the data for Fe-21Cr-22Mn-0.15C-0.53N austenitic steel (wt. %) obtained by traditional methods (casting and heat treatment) and used as a raw material for additive manufacturing. It was experimentally established that in the specimens obtained by additive manufacturing method, depletion of the steel composition by manganese in the electron-beam 3D-printing and post-built heat treatment contributes to the formation of a macroscopically and microscopically inhomogeneous two-phase structure. In the steel specimens, macroscopic regions of irregular shape with large ferrite grains or a two-phase austenite-ferrite structure (microscopic inhomogeneity) were observed. Despite the change in the concentration of the basic elements (chromium and manganese) in additive manufacturing, a high concentration of interstitial atoms (nitrogen and carbon) remains in steel. This contributes to the macroscopically heterogeneous distribution of interstitial atoms in the specimens - the formation of a supersaturated interstitial solid solution in the austenitic regions due to the low solubility of nitrogen and carbon in the ferrite regions. This inhomogeneous heterophase (ferrite-austenite) structure has high strength properties, good ductility and work hardening, which are close to those of the specimens of the initial high-nitrogen austenitic steel used as the raw material for additive manufacturing.

scholarly journals Кинетика структуры титанового сплава при высокоскоростном проникании ударника

2020 ◽  
Vol 62 (11) ◽  
pp. 1769
Author(s):  
С.А. Атрошенко ◽  
А.Ю. Григорьев ◽  
Г.Г. Савенков
Keyword(s):  
Plastic Deformation ◽  
Titanium Alloy ◽  
High Speed ◽  
Deformation And Fracture ◽  
Mechanisms Of Plastic Deformation

Abstract. The article is devoted to the study of the behavior of a titanium alloy under conditions of high-speed penetration at a speed of approximately 2.0 km / s. It is shown that in the target during penetration, three penetration zones are observed that differ in the mechanisms of plastic deformation and fracture.

Structure and mesoscale plastic deformation and fracture patterns of materials coated by electron-beam deposition

2003 ◽  
Vol 26 (4) ◽  
pp. 349-362 ◽  
Author(s):  
V. E. PANIN ◽  
S. I. BELYUK ◽  
V. G. DURAKOV ◽  
S. V. PANIN ◽  
N. K. GALCHENKO ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Electron Beam ◽  
Fracture Patterns ◽  
Deformation And Fracture ◽  
Electron Beam Deposition ◽  
Beam Deposition

Plastic Deformation and Fracture During the Zr1%Nb Tube Production

2009 ◽  
pp. 427-427-22
Author(s):  
SY Zavodtchikov ◽  
LB Zuev ◽  
VI Belov ◽  
AF Lositskiy ◽  
YP Shevnin
Keyword(s):  
Plastic Deformation ◽  
Tube Production ◽  
Deformation And Fracture
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