Results 331 to 340 of about 246,867 (387)

Multiscale investigations of severe plastic deformation

Materials Science and Engineering: A, 2005
Abstract The present paper represents the results of an application of the multiscale approach to study severe plastic deformation (SPD). These investigations were used to reveal the features of material flow and crystallographic texture development in bulk Cu ingots subjected to SPD by equal-channel angular (ECA) pressing.
Jan T. Bonarski, Igor V. Alexandrov, A. V. Scherbakov, Marina V. Zhilina   +3 more
openaire   +2 more sources

The Role of Hydrostatic Pressure in Severe Plastic Deformation

Advanced Engineering Materials, 2003
AbstractThe contribution presents several experimental examples which show that the presence of an enhanced hydrostatic pressure—as compared to conventional large deformation modes—is one of the main features of severe plastic deformation (SPD). At the example of systematic high pressure torsion experiments with Cu at room temperature, strength ...
Michael J. Zehetbauer, H.P. Stüwe, Erhard Schafler, J. Kohout, A. Vorhauer   +4 more
openaire   +2 more sources

Effect of rapid quenching and severe plastic deformation on silver

International Journal of Materials Research, 2012
Abstract Pure silver has been rapidly quenched (RQ) in ribbon form by means of planar flow casting with different cooling rates, obtained with different velocities of the cooling wheel. Ingots of pure silver have been subjected to severe plastic deformation (SPD) using constrained groove pressing and equal-channel angular pressing.
LUSSANA, DANILO, CASTELLERO, Alberto, D. Ripamonti, G. Angella, M. Vedani, A. Zambon, BARICCO, Marcello   +6 more
openaire   +4 more sources

Equivalent Strains in Severe Plastic Deformation

Advanced Engineering Materials, 2003
AbstractThe concept of equivalent plastic strain is discussed. Definitions may be based on kinematic arguments (like change of geometry) or on equivalence of plastic work. Complications arise when strain is accumulated in increments with variable strain path.
openaire   +2 more sources

Natural Aging of Aluminum Alloy 2024 After Severe Plastic Deformation

Metallography Microstructure and Analysis, 2023
I. Volokitina, A. Bychkov, A. Volokitin, A. Kolesnikov   +3 more
semanticscholar   +1 more source

Metal processing by severe plastic deformation

Russian Metallurgy (Metally), 2006
The mechanics of severe plastic deformation (SPD) is considered. Unlike steady-state plastic flows with the continuous evolution of dislocation structures, the SPD-induced microlocalization strongly depends on the deformation mode. The quantitative characteristic of a deformation mode is determined by the distribution of strain rates over the principal
openaire   +2 more sources

Severe plastic deformation: A state of art

Materials Today: Proceedings, 2023
H. Kumar, K. Devade, Durgeshwar Pratap Singh, Jitendra Mohan Giri, Manish Kumar, V. Arun   +5 more
semanticscholar   +1 more source

Investigations and Applications of Severe Plastic Deformation

2000
Preface. Introduction. I: Innovations in Severe Plastic Deformation Processing and Process Modeling. Severe Plastic Deformation of Materials by Equal Channel Angular Extrusion (ECAE) R.E. Goforth, et al. Severe Plastic Deformation of Steels: Structure, Properties and Techniques S.V. Dobatkin.
Ruslan Z. Valiev, Terry C. Lowe
openaire   +2 more sources

Severe plastic deformation (SPD) processes for metals

CIRP Annals, 2008
Abstract Processes of severe plastic deformation (SPD) are defined as metal forming processes in which a very large plastic strain is imposed on a bulk process in order to make an ultra-fine grained metal. The objective of the SPD processes for creating ultra-fine grained metal is to produce lightweight parts by using high strength metal for the ...
MICARI, Fabrizio, Azushima, A, Kopp, R, Korhonen, A, Yang, DY, Lahoti, GD, Groche, P, Yanagimoto, J, Tsuji, N, Rosochowski, A, Yanagida, A.   +10 more
openaire   +3 more sources

Ultrafine-grain metals by severe plastic deformation

Materials Characterization, 2014
As a relatively simple top-down technique to produce nanomaterials in bulk, severe plastic deformation became a new way of transforming the microstructure of the material. When carried out at sufficiently low temperature, extreme large plastic deformations lead to ultrafine-grain or nearly nano-structured material.
Chengfan Gu, Chengfan Gu, Laszlo S. Toth
openaire   +3 more sources