The Role of Hydrostatic Pressure in Severe Plastic Deformation

2003 ◽  
Vol 5 (5) ◽  
pp. 330-337 ◽  
Author(s):  
M.J. Zehetbauer ◽  
H.P. Stüwe ◽  
A. Vorhauer ◽  
E. Schafler ◽  
J. Kohout
Keyword(s):  
Plastic Deformation ◽  
Hydrostatic Pressure ◽  
Severe Plastic Deformation

The Role of Hydrostatic Pressure in Severe Plastic Deformation

2005 ◽  
pp. 433-446 ◽  
Author(s):  
M. J. Zehetbauer ◽  
H. P. Stüwe ◽  
A. Vorhauer ◽  
E. Schafler ◽  
J. Kohout
Keyword(s):  
Plastic Deformation ◽  
Hydrostatic Pressure ◽  
Severe Plastic Deformation

The role of pyramidal 〈  +  〉 dislocations in the grain refinement mechanism in Ti-6Al-4V alloy processed by severe plastic deformation

2020 ◽  
Vol 200 ◽  
pp. 101-115
Author(s):  
Chenglin Wang ◽  
Dapeng Yu ◽  
Zhiqiang Niu ◽  
Wenlong Zhou ◽  
Guoqing Chen ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Grain Refinement ◽  
Refinement Mechanism

Role of severe plastic deformation on the formation of nanograins and nano-sized precipitates in Fe–Ni–Mn steel

2011 ◽  
Vol 32 (6) ◽  
pp. 3526-3531 ◽  
Author(s):  
M. Nili Ahmadabadi ◽  
H. Shirazi ◽  
H. Ghasemi-Nanesa ◽  
S. Hossein Nedjad ◽  
B. Poorganji ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Mn Steel

Role of severe plastic deformation on the cyclic reversibility of a Ti50.3Ni33.7Pd16 high temperature shape memory alloy

2010 ◽  
Vol 58 (19) ◽  
pp. 6411-6420 ◽  
Author(s):  
B. Kockar ◽  
K.C. Atli ◽  
J. Ma ◽  
M. Haouaoui ◽  
I. Karaman ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
High Temperature ◽  
Shape Memory Alloy ◽  
Severe Plastic Deformation ◽  
Shape Memory

Al-Mg-Si: Microstructural Analysis

2019 ◽  
Author(s):  
Marcello Cabibbo
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Microstructural Analysis ◽  
Strengthening Effect ◽  
Angular Pressing ◽  
Zr Addition ◽  
First Case ◽  
Specific Modeling

This article presents two case studies referring to the severe plastic deformation applied to Al-Mg-Si alloys. In a first case study, an Al-Mg-Si alloy in a T6 temper is subjected to equal-channel angular pressing (ECAP), and all the microstructure strengthening contributions to the alloy yield stress are determined through specific modeling and then validated. In a second case study, two Al-Mg-Si alloys, one with Zr addition and a second with Sc-Zr addition, are subjected to ECAP after a T6 temper in an overaged status. In the second case, the role of the Zr- and Sc-Zr-containing nanometer dispersoids is described, and the related strengthening effect is modeled according to the models presented in the first case study.

The Role of Grain Boundaries and other Defects on Phase Transformations Induced by Severe Plastic Deformation

2015 ◽  
Vol 5 ◽  
pp. 77-92 ◽  
Author(s):  
Xavier Sauvage ◽  
Yana Nasedkina
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Phase Transformations ◽  
Grain Boundaries ◽  
Mechanical Mixing ◽  
Ultrafine Grained ◽  
Ultrafine Grained Materials ◽  
Underlying Mechanisms ◽  
Scientific Questions

During the past two decades, processing of ultrafine grained materials using severe plastic deformation techniques has attracted great interest in the scientific community. Although the up-scaling of processes and the lack of ductility of ultrafine grained alloys are still some important challenges, these techniques look promising because they produce bulk materials free of porosities. More recently, some strategies to combine precipitation hardening and ultrafine grained structures have been proposed. It has also been shown that nanoscaled composite materials could be successfully processed. This experimental work rose however some very fundamental scientific questions about the influence of severe plastic deformation on the precipitation mechanisms or on the formation of supersaturated solid solution through mechanical mixing. The driving force and the thermodynamics of these phase transformations are of course affected by the high amount of energy stored in severely deformed alloys, especially as interfacial energy. But grain boundaries, with the help of dislocations and point defects, also play an important role in the kinetics. In this paper, it is proposed to shortly review these phenomena and the underlying mechanisms with a special emphasis on the contribution of grain boundaries.

scholarly journals Amorphous-Nanocrystalline Composites Prepared by High-Pressure Torsion

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 511 ◽  
Author(s):  
Inga Permyakova ◽  
Alex Glezer
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Hydrostatic Pressure ◽  
Severe Plastic Deformation ◽  
Amorphous Alloys ◽  
Preparation Method ◽  
High Pressure Torsion ◽  
Structure And Properties ◽  
Nanocrystalline Composites

This article presents systematic studies of the preparation method and the specific features of the changes in the structure and properties of amorphous-nanocrystalline composites formed from melt-quenched ribbons of iron- and cobalt-based amorphous alloys and the Cu-Nb crystalline nanolaminates by severe plastic deformation by torsion in the Bridgeman chamber at high quasi-hydrostatic pressure.

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