Paper Title:
Diffusion under a Stress in Metals and Interstitial Alloys
  Abstract

Elastic fields, generating by precipitates, cracks, dislocations and other defects of the structure, influence the diffusion processes. It leads to the alteration of the phase transformation kinetic, segregation formation and changes of the alloy properties. However, understanding the effects of strain on diffusion in solids is now limited. One of the chief aims of our approach is to obtain the general equations for the diffusion fluxes under strain that give the possibility of using these equations at low temperatures, as in this case, the strain influence on the diffusion fluxes is manifested in maximal degree. Recently some important generalization of our approach was done and equations for the vacancy fluxes in cubic metals were obtained. Now we have made the next step in the development of approach: general equations for the fluxes in interstitial alloys are obtained for different kinds of jumps in bcc and fcc structures. We are going to discuss the main features of the theory of diffusion under stress, to compare the equations for the fluxes and to present results of theory applications that are obtained with the help of computer simulations.

  Info
Periodical
Solid State Phenomena (Volumes 172-174)
Edited by
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
Pages
1156-1163
DOI
10.4028/www.scientific.net/SSP.172-174.1156
Citation
A. V. Nazarov, A. Mikheev, I. Valikova, A. Zaluzhnyi, "Diffusion under a Stress in Metals and Interstitial Alloys", Solid State Phenomena, Vols. 172-174, pp. 1156-1163, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Liudmila V. Selezneva, Andrei V. Nazarov
Abstract:This work is devoted to simulation of interstitial atom diffusion in fcc metals with point defects. We used the molecular static and the...
1275
Authors: Irina Valikova, Andrei V. Nazarov, Alexandr A. Mikheev
Abstract:This work is devoted to the simulation of atom configurations in bcc metals near the point defect using the molecular static method. The...
55
Authors: Kwai S. Chan, Yi Ming Pan, Yi Der Lee
Abstract:First–principle computational methods have been utilized to compute the diffusion mobility of Mo, Cr, Fe, and W. A local density-based...
73
Authors: Liudmila V. Selezneva, Andrei V. Nazarov
Abstract:This work is devoted to simulation of potential barrier spectrum for hydrogen atom and vacancy jumps in fcc- and bcc- metals taking into...
133
Authors: Martin Leitner, Doris Vogtenhuber, Wolfgang Pfeiler, Wolfgang Püschl
Abstract:Kinetic Monte Carlo (KMC) simulation is a valuable tool to investigate configu-ration changes in intermetallic compounds. The elementary...
1022