Influence of grain boundary state on electrical resistivity of ultrafine grained aluminium

2016 ◽  
Vol 96 (23) ◽  
pp. 2429-2444 ◽  
Author(s):  
T. S. Orlova ◽  
A. M. Mavlyutov ◽  
A. S. Bondarenko ◽  
I. A. Kasatkin ◽  
M. Yu. Murashkin ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Grain Boundary ◽  
Boundary State ◽  
Ultrafine Grained

Effect of Grain Boundary State on Diffusion and Diffusion-Controlled Processes in Ultrafine-Grained Materials Processed by Severe Plastic Deformation

2015 ◽  
Vol 5 ◽  
pp. 111-126
Author(s):  
Evgeny V. Naydenkin ◽  
Galina P. Grabovetskaya ◽  
I.P. Mishin
Keyword(s):  
Plastic Deformation ◽  
Grain Boundary ◽  
Severe Plastic Deformation ◽  
Grain Boundaries ◽  
Experimental Studies ◽  
Boundary State ◽  
Diffusion Controlled ◽  
Ultrafine Grained ◽  
Ultrafine Grained Materials ◽  
And Diffusion

Experimental studies on the grain boundary diffusion and processes controlled by it in the ultrafine-grained metallic materials produced by various methods of severe plastic deformation are reviewed. Correlation between the increased diffusion permeability of grain boundaries and features of recrystallization and deformation development in these materials possessing the non-equilibrium state of grain boundaries formed during severe plastic deformation in the temperature range of T < 0.35Tm is demonstrated and analyzed.

Light Effects on Grain Boundary Properties in Silicon

1981 ◽  
Vol 5 ◽  
Author(s):  
L. J. Cheng ◽  
C. M. Shyu
Keyword(s):  
Experimental Data ◽  
Grain Boundary ◽  
Minority Carrier ◽  
State Density ◽  
Boundary State ◽  
Carrier Recombination ◽  
Boundary Properties ◽  
Light Effects ◽  
Recombination Velocity ◽  
P Type

ABSTRACTWe have studied the photoconductivity of grain boundaries in p–type silicon. The result demonstrates the applicability of the technique for the measurement of minority carrier recombination velocity at the grain boundary. The experimental data are consistent with the thought that the recombination velocity increases with the boundary state density and light intensity.

The Effect of Grain Boundary State on Deformation Process Development in Nanostructured Metals Produced by the Methods of Severe Plastic Deformation

2011 ◽  
Vol 683 ◽  
pp. 69-79 ◽  
Author(s):  
Evgeny V. Naydenkin ◽  
Galina P. Grabovetskaya ◽  
Konstantin Ivanov
Keyword(s):  
Plastic Deformation ◽  
Grain Boundary ◽  
Severe Plastic Deformation ◽  
Deformation Process ◽  
Process Development ◽  
Grain Boundary Sliding ◽  
Total Deformation ◽  
Nanostructured Metals ◽  
Boundary State ◽  
Boundary Sliding

In this review the investigations of deformation process development are discussed which were carried out by tension and creep in the temperature range Т<0.4Tm (here Тm is the absolute melting point of material) for nanostructured metals produced by the methods of severe plastic deformation. The contribution of grain boundary sliding to the total deformation in the above temperature interval is also considered. An analysis is made of the effect of grain size and grain boundary state on the evolution of grain boundary sliding and cooperative grain boundary sliding in nanostructured metals.

Contribution of grain boundary related strain accommodation to deformation of ultrafine-grained palladium

2016 ◽  
Vol 668 ◽  
pp. 255-262 ◽  
Author(s):  
Yu. Ivanisenko ◽  
N.A. Enikeev ◽  
K. Yang ◽  
A. Smoliakov ◽  
V.P. Soloviev ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Related Strain ◽  
Ultrafine Grained

Thermal stability and grain boundary strengthening in ultrafine-grained CoCrFeNi high entropy alloy composite

2017 ◽  
Vol 134 ◽  
pp. 426-433 ◽  
Author(s):  
Praveen Sathiyamoorthi ◽  
Joysurya Basu ◽  
Sanjay Kashyap ◽  
K.G. Pradeep ◽  
Ravi Sankar Kottada
Keyword(s):  
Thermal Stability ◽  
Grain Boundary ◽  
High Entropy Alloy ◽  
Alloy Composite ◽  
High Entropy ◽  
Ultrafine Grained ◽  
Grain Boundary Strengthening

Mechanism of Stress-Driven Grain Boundary Migration in Nanotwinned Materials

2018 ◽  
Vol 55 (1) ◽  
pp. 21-25 ◽  
Author(s):  
N.V. Skiba
Keyword(s):  
Theoretical Model ◽  
Grain Boundary ◽  
Twin Boundary ◽  
Boundary Migration ◽  
Grain Boundary Migration ◽  
High Angle ◽  
Twin Boundaries ◽  
Critical Stresses ◽  
Ultrafine Grained ◽  
Ultrafine Grained Materials

Abstract Stress-driven grain boundary (GB) migration in ultrafine-grained materials with nanotwinned structure is theoretically described. In the framework of the theoretical model, the stress-driven high-angle GB migration is accompanied by migration of twin boundaries which adjoin this GB. Energetic characteristics and critical stresses of the GB migration accompanied by the twin boundary migration are calculated.

Structure Evolution and Deformation Mechanisms in Ultrafine-Grained Aluminum under Tension at Room Temperature

2010 ◽  
Vol 667-669 ◽  
pp. 915-920
Author(s):  
Konstantin Ivanov ◽  
Evgeny V. Naydenkin
Keyword(s):  
Grain Boundary ◽  
Room Temperature ◽  
Grain Boundary Sliding ◽  
Deformation Mechanisms ◽  
Structure Evolution ◽  
Dislocation Slip ◽  
Polished Surface ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Boundary Sliding

Deformation mechanisms occurring by tension of ultrafine-grained aluminum processed by equal-channel angular pressing at room temperature are investigated using comparative study of the microstructure before and after tensile testing as well as deformation relief on the pre-polished surface of the sample tested. Deformation behavior and structure evolution during tension suggest development of grain boundary sliding in addition to intragrain dislocation slip. Contribution grain boundary sliding to the overall deformation calculated using the magnitude of shift of grains relative to each other is found to be ~40%.

Sign in / Sign up

Export Citation Format

Share Document