Severe plastic deformation of copper by machining: Microstructure refinement and nanostructure evolution with strain

2007 ◽  
Vol 56 (12) ◽  
pp. 1047-1050 ◽  
Author(s):  
S. Swaminathan ◽  
T.L. Brown ◽  
S. Chandrasekar ◽  
T.R. McNelley ◽  
W.D. Compton
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Microstructure Refinement

scholarly journals Effect of strain rate in severe plastic deformation on microstructure refinement and stored energies

2011 ◽  
Vol 26 (3) ◽  
pp. 395-406 ◽  
Author(s):  
Shashank Shekhar ◽  
Jiazhao Cai ◽  
Saurabh Basu ◽  
Sepideh Abolghasem ◽  
M. Ravi Shankar
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Strain Rate ◽  
Microstructure Refinement ◽  
Image Position

Abstract

Microstructure Refinement During Severe Plastic Deformation (SPD) of FCC Materials: A Texture Based Study

2011 ◽  
Vol 702-703 ◽  
pp. 143-146
Author(s):  
Srinivasan Swaminathan ◽  
Terry R. McNelley ◽  
Srinivasan Chandrasekar
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Plane Strain ◽  
Friction Stir Processing ◽  
Large Strain ◽  
Friction Stir ◽  
Microstructure Refinement ◽  
Orientation Imaging ◽  
Angular Pressing ◽  
Fcc Materials

FCC materials were subjected to large strain deformation by three techniques: equal channel angular pressing (ECAP), plane-strain machining and friction stir processing (FSP). Based on the orientation imaging mapping (OIM) analysis of the deformed regions, the most likely microstructure refinement mechanisms have been identified for each of the techniques and compared among one another.

Severe plastic deformation of Al-1%Cu Alloy processed by a Simple Cyclic Extrusion Compression technique

2018 ◽  
Vol 1 (1) ◽  
pp. 77-90
Author(s):  
Walaa Abdelaziem ◽  
Atef Hamada ◽  
Mohsen A. Hassan
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Deformation Behavior ◽  
Cast Alloy ◽  
Surface Hardness ◽  
Grain Structure ◽  
Compression Technique ◽  
Cu Alloy ◽  
Cyclic Extrusion Compression

Severe plastic deformation is an effective method for improving the mechanical properties of metallic alloys through promoting the grain structure. In the present work, simple cyclic extrusion compression technique (SCEC) has been developed for producing a fine structure of cast Al-1 wt. % Cu alloy and consequently enhancing the mechanical properties of the studied alloy. It was found that the grain structure was significantly reduced from 1500 µm to 100 µm after two passes of cyclic extrusion. The ultimate tensile strength and elongation to failure of the as-cast alloy were 110 MPa and 12 %, respectively. However, the corresponding mechanical properties of the two pass CEC deformed alloy are 275 MPa and 35%, respectively. These findings ensure that a significant improvement in the grain structure has been achieved. Also, cyclic extrusion deformation increased the surface hardness of the alloy by 49 % after two passes. FE-simulation model was adopted to simulate the deformation behavior of the material during the cyclic extrusion process using DEFORMTM-3D Ver11.0. The FE-results revealed that SCEC technique was able to impose severe plastic strains with the number of passes. The model was able to predict the damage, punch load, back pressure, and deformation behavior.

TECHNOLOGIES FOR MANUFACTURING NANOSTRUCTURED SURFACES

2020 ◽  
Author(s):  
Андрей Дмитриевич Бухтеев ◽  
Виктория Буянтуевна Бальжиева ◽  
Анна Романовна Тарасова ◽  
Фидан Гасанова ◽  
Светлана Викторовна Агасиева
Keyword(s):  
Plastic Deformation ◽  
Surface Modification ◽  
Severe Plastic Deformation ◽  
Pressing Pressure ◽  
Pressure Treatment ◽  
Structured Surfaces ◽  
Nanostructured Surfaces ◽  
Angular Pressing ◽  
Multilayer Composites ◽  
Compaction Of Powders

В данной статье рассматривается применение и технологии получения наноструктурированных поверхностей. Рассмотрены такие методы как компактирование порошков (изостатическое прессование, метод Гляйтера), интенсивная пластическая деформация (угловое кручение, равноканальное угловое прессование, обработка давлением многослойных композитов) и модификация поверхности (лазерная обработка, ионная бомбардировка). This article discusses the application and technology for obtaining nano-structured surfaces. Methods such as compaction of powders (isostatic pressing, Gleiter method), severe plastic deformation (angular torsion, equal-channel angular pressing, pressure treatment of multilayer composites) and surface modification (laser treatment, ion bombardment) are considered.

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