scholarly journals Severe plastic deformation of metals

10.30544/380 ◽  
2005 ◽  
Vol 11 (3) ◽  
pp. 165-182 ◽  
Author(s):  
BERT VERLINDEN
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Thermal Annealing ◽  
Fatigue Resistance ◽  
Strain Path ◽  
Subsequent Annealing ◽  
Corrosion Properties ◽  
Microstructural Changes ◽  
Short Overview ◽  
Superplastic Properties

This paper provides an introduction in the field of severe plastic deformation (SPD). First of all the main methods to produce SPD materials are discussed. In the following section, the mechanisms leading to the formation of fine grains are reviewed and the influence of changes in strain path is highlighted. During post-SPD thermal annealing, some typical microstructural changes take place. The influence of SPD and subsequent annealing on strength, ductility and superplastic properties are reviewed. Finally the paper provides a short overview of fatigue resistance and corrosion properties of those materials.

Evolution of the Structural-Phase State of a Ti–Al– V–Mo Alloy During Severe Plastic Deformation and SubSequent Annealing

2016 ◽  
Vol 59 (1) ◽  
pp. 109-115 ◽  
Author(s):  
G. P. Grabovetskaya ◽  
I. V. Ratochka ◽  
I. P. Mishin ◽  
O. V. Zabudchenko ◽  
O. N. Lykova
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Phase State ◽  
Structural Phase ◽  
Subsequent Annealing ◽  
Structural Phase State

Thermo- and Deformation Induced Martensitic Transformations in Binary TiNi-Based Alloys Subjected to Severe Plastic Deformation

2013 ◽  
Vol 738-739 ◽  
pp. 530-534 ◽  
Author(s):  
Natalia N. Kuranova ◽  
Vladimir V. Makarov ◽  
Vladimir G. Pushin ◽  
Alexey N. Uksusnikov
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
High Pressure ◽  
Severe Plastic Deformation ◽  
High Pressure Torsion ◽  
Amorphous State ◽  
Cold Drawing ◽  
Martensitic Transformations ◽  
Subsequent Annealing ◽  
Structure And Phase Transformations

Results of investigations of structure and phase transformations and properties of the TiNi-based alloys with a shape memory effect (SME) after severe plastic deformation (SPD) by cold rolling, cold drawing, high pressure torsion and subsequent annealing are reported. It is found that the baroelastic effects related to the highly reversible martensitic transformations can occur in alloys, subjected to high pressure. The evolution of fine structure of the alloys into nanocrystalline and then amorphous state during SPD and after subsequent annealing have been studied. The effect of grain size on the martensitic transformations and properties of the alloys is discussed.

scholarly journals The influence of new severe plastic deformation on microstructure, mechanical and corrosion properties of Mg-0.8Mn-0.5Ca alloy

2021 ◽  
pp. 46-46
Author(s):  
M. Khani ◽  
G.R. Ebrahimi ◽  
H.R. Ezatpour ◽  
A. Momeni
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Tensile Elongation ◽  
Effective Strain ◽  
Corrosion Properties ◽  
Average Grain Size ◽  
Internal Angle ◽  
Processed Sample ◽  
Mechanical And Corrosion Properties ◽  
Sbf Solution

In this research, the effect of accumulative extrusion bonding (AEB) on the microstructure and mechanical properties of Mg-0.8Mn-0.5Ca biocompatible alloy was investigated. The goal of this research was to develop the mechanical and corrosion properties of Mg-0.8Mn-0.5Ca alloy after ABE process as a novel severe plastic deformation process. The simulation of AEB process showed that the average effective strain per pass for channels with the internal angle of 120? is about 1.93. The average grain size was dramatically decreased from about 448.3 ?m for the homogenized alloy to 1.55 ?m for the 3-pass processed sample. Microstructural observations suggested a combination of continuous, discontinuous and twinning-induced dynamic recrystallization as the major mechanisms of grain refinement. Tensile and compressive strengths were improved from 150 and 205 MPa to 330 and 301 MPa after three passes of AEB, respectively indicating 2 and 1.5 times improvements, respectively. Tensile elongation decreased from 26 % for the homogenized sample to 7.5 % for the 3-pass processed sample due to the severe work-hardening, non-uniform strains and inhomogeneous microstructure produced by ABE process. Corrosion resistance in SBF solution was improved from 1.1 to 14.159 K? Cm2 after three passes of ABE due to the presence of hydroxyapatite formed on the surface of the AEBed samples.

Structural Stability of Cu Processed by Severe Plastic Deformation Method

2010 ◽  
Vol 163 ◽  
pp. 114-117 ◽  
Author(s):  
Kinga Rodak ◽  
Krzysztof Radwański
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Grain Growth ◽  
Structural Stability ◽  
Annealing Time ◽  
Deformation Method ◽  
Microstructural Changes ◽  
Annealing Behaviour ◽  
Cyclic Extrusion Compression

The annealing behaviour of monocrystaline Cu processed by Cyclic Extrusion Compression (CEC) was investigated. The effect of the CEC strain on the annealing behaviour of submicrometer grained structure was studied by examination of the microstructural changes of the samples processed by two different CEC strains, 4.8 and 13.9 during annealing at 300oC for the time in the range from 1sec to 120 min. The results show that microstructure is stable up to an annealing time of 15 min. At a higher time of annealing (above 15 min), a gradual grain growth occurs.

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