Texture Evolution in Si-Alloyed Ultra Low-Carbon Steels after Severe Plastic Deformation

2010 ◽  
Vol 12 (10) ◽  
pp. 1077-1081 ◽  
Author(s):  
P. Gobernado ◽  
R. Petrov ◽  
D. Ruiz ◽  
E. Leunis ◽  
Leo A. I. Kestens
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Texture Evolution ◽  
Carbon Steels ◽  
Low Carbon ◽  
Low Carbon Steels

Ultrafine Grained Low Carbon Steels Processed by Severe Plastic Deformation

2008 ◽  
Vol 584-586 ◽  
pp. 623-630 ◽  
Author(s):  
Sergey V. Dobatkin ◽  
P.D. Odessky ◽  
Svetlana V. Shagalina
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Severe Plastic Deformation ◽  
High Pressure Torsion ◽  
High Strength ◽  
Carbon Steels ◽  
Low Alloy Steels ◽  
Low Carbon ◽  
Low Carbon Steels ◽  
Ultrafine Grained

The structure, mechanical and functional properties of ultrafine-grained low-carbon steels have been studied after severe plastic deformation (SPD) by high pressure torsion (HPT) and equalchannel angular pressing (ECAP). It is revealed that HPT of low carbon steels at a temperature below 0.3 Tm leads to the formation of nanocrystalline structure with a grain size of <100 nm or a mixture of oriented substructure and nanograins. ECAP under similar conditions leads to the formation of submicrocrystalline structure with a grain size of 200-300 nm. The initial martensitic state compared with the initial ferritic-pearlitic state of the low-carbon steels results in formation of finer structure after SPD and less intense grain growth upon heating, i.e., results in a higher thermal stability. Low-carbon low-alloy steels after ECAP are characterized by high strength (UTS > 1000 MPa) and plasticity (EL = 10-15%). The high-strength state after ECAP is retained upon tensile test testing up to a temperature of 500°C. The submicrocrystalline low-carbon steels after ECAP processing and subsequent heating is characterized by an increased impact toughness at test temperatures down to -40°C.

scholarly journals Texture Evolution during Annealing of Warm Rolled Cr-Containing Low Carbon Steels

2007 ◽  
Vol 558-559 ◽  
pp. 295-300 ◽  
Author(s):  
Elena V. Pereloma ◽  
Azdiar A. Gazder ◽  
John J. Jonas ◽  
Chris H.J. Davies
Keyword(s):  
Texture Evolution ◽  
Shear Bands ◽  
Carbon Steels ◽  
Lower Amount ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
Low Carbon Steels ◽  
X Ray ◽  
Cr Content ◽  
Back Scattering

Two low carbon steels alloyed with 0.48wt% and 0.78wt% Cr were warm rolled to 65% reduction at 640°C. Annealing was carried out at 710°C to achieve a range of recrystallized volume fractions up to 100%. Texture analysis was performed by X-ray diffraction and Electron Back Scattering Diffraction. During the initial stages of recrystallization, more recrystallized grains nucleated at shear bands than at grain boundaries in the 0.48wt%Cr steel, whereas this was not the case in the 0.78wt%Cr steel. This is associated with a decrease in the propensity to form shear bands due to the lower amount of C in solid solution in the high-Cr steel. Additionally, the nuclei showed a preference to develop the same fiber as the deformed region within which they nucleated. In both steels, an increase in the annealing time led to the deterioration of the ND (or γ) –fiber and a strengthening of both the RD (or α) –fiber and Goss component. In the fully recrystallized samples, the ND component was somewhat stronger in the steel with the higher Cr content.

Features of Dynamic Strain Aging of Low-Carbon Steels during Severe Plastic Deformation Processing

2017 ◽  
Vol 743 ◽  
pp. 191-196 ◽  
Author(s):  
Gennady N. Aleshin ◽  
Georgy I. Raab ◽  
Ilyas S. Kodirov
Keyword(s):  
Plastic Deformation ◽  
Strain Aging ◽  
Carbon Steels ◽  
Severe Plastic Deformation Processing ◽  
Dynamic Strain ◽  
Low Carbon ◽  
Deformation Processing ◽  
Low Carbon Steels ◽  
Angular Pressing ◽  
Steel 20Kh

The paper considers the features of the manifestation of dynamic strain aging (DSA) effect during severe plastic deformation processing via equal-channel angular pressing of low-carbon steel 10 and during the deformation processing via rolling of steel 20Kh. The deformation mechanisms under different regimes of deformation processing are analyzed. The temperature ranges for the manifestation of the DSA effect during the deformation by rolling of steel 20Kh and by equal-channel angular pressing of steel 10 are established. It is demonstrated that the deformation of low-carbon steels in the temperature range of DSA leads to further structure refinement and, as a consequence, to the enhancement in strength properties.

Surface Microstructure and Texture Evolution during Interrupted Annealing in Ultra Low Carbon Steels

2010 ◽  
Vol 89-91 ◽  
pp. 202-207
Author(s):  
J. Gautam ◽  
Roumen H. Petrov ◽  
Leo Kestens ◽  
Elke Leunis
Keyword(s):  
Phase Transformation ◽  
Surface Texture ◽  
Texture Evolution ◽  
Low Carbon Steel ◽  
Carbon Steels ◽  
Control Surface ◽  
Surface Microstructure ◽  
Low Carbon ◽  
Metal Vapour ◽  
Low Carbon Steels

The austenite-to-ferrite phase transformation, which is an inherent feature of low-alloyed ultra low carbon steels, has scarcely been investigated to control surface texture and microstructure evolution. This paper investigates the systematic evolution of texture and microstructure at the metal-vapour interface during interrupted annealing in vacuum. Interrupted annealing experiments were carried out on three ultra low carbon steel sheets alloyed with Mn, Al and Si. The texture and microstructures have been investigated by X-ray diffraction and SEM-EBSD techniques. These results reveal a very clear variation in the surface texture components as well as in the surface microstructure after BCC recrystallisation and double  transformation interrupted annealing. The recrystallisation texture consists mainly of a <111>//ND fibre, while the transformation texture at the surface exhibits a <100>// ND fibre in combination with components of the <110> //ND fibre. It has been revealed that the latter specific surface texture was present in a monolayer of outer surface grains which were in direct contact with the vapour atmosphere. This observed phenomenon could be explained by considering the role of surface energy anisotropy occurring during phase transformation annealing.

scholarly journals Microstructure Evolution of the Carbon Steels During Surface Severe Plastic Deformation

2021 ◽  
Vol 22 (4) ◽  
pp. 562-618
Author(s):  
M. O. Vasylyev ◽  
B. M. Mordyuk ◽  
S. M. Voloshko ◽  
D. A. Lesyk
Keyword(s):  
Electron Microscopy ◽  
Plastic Deformation ◽  
Carbon Steel ◽  
Severe Plastic Deformation ◽  
Microstructure Evolution ◽  
High Carbon Steel ◽  
Carbon Steels ◽  
Surface Mechanical Attrition Treatment ◽  
Low Carbon ◽  
Near Surface

The review is devoted to the state-of-the-art views on the microstructure evolution in structural and tool carbon steels during the surface severe plastic deformation (SPD). The main focus is on the effects of the nanocrystallization in the near-surface area of the low-carbon steel (C 0.05–0.2%), medium-carbon steel (C 0.35–0.65%), and high-carbon steel (C 1.0–1.5%). It is reviewed the following advanced surface SPD methods for the metal surfaces in recent years: an ultrasonic impact peening (UIP), high-frequency impact peening (HFIP), air blast shot peening (ABSP), surface mechanical attrition treatment (SMAT), and laser shock peening (LSP). Microstructure evolution before and after SPD is studied by optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The effects of the SPD parameters on the nanocrystalline modification of such main phase components of the carbon steels as ferrite, pearlite, and cementite are analysed. The atomic mechanism of the nanocrystallization is presented. The strain-hardening effect induced by SPD is demonstrated by the data of the near-surface microhardness profiles.

Effect of cold plastic deformation on susceptibility of low-carbon steels to brittle fracture

1976 ◽  
Vol 11 (1) ◽  
pp. 33-36 ◽  
Author(s):  
G. G. Maksimovich ◽  
Yu. A. Shul'te ◽  
S. V. Nagirnyi ◽  
V. V. Lunev ◽  
N. I. Azarov ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Brittle Fracture ◽  
Carbon Steels ◽  
Cold Plastic Deformation ◽  
Low Carbon ◽  
Low Carbon Steels
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