Internal stress effect on grain-boundary diffusion in submicrocrystalline metals

2000 ◽  
Vol 80 (4) ◽  
pp. 221-227 ◽  
Author(s):  
A. A. Nazarov
Keyword(s):  
Grain Boundary ◽  
Internal Stress ◽  
Boundary Diffusion ◽  
Grain Boundary Diffusion ◽  
Stress Effect ◽  
Submicrocrystalline Metals

Atomistic Simulation of Stress-Induced Grain Boundary Diffusion: For Tin-Whisker Problem

2012 ◽  
Vol 706-709 ◽  
pp. 1545-1549 ◽  
Author(s):  
Yoshitaka Umeno ◽  
Jun Negami
Keyword(s):  
Grain Boundary ◽  
Atomistic Simulation ◽  
Boundary Diffusion ◽  
Interatomic Potential ◽  
Grain Boundary Diffusion ◽  
Boundary Structure ◽  
Stress Effect ◽  
Whisker Formation ◽  
Tin Whisker ◽  
Effect Of Impurities

The problem of whisker formation in tin (Sn) wiring in small electronic devices has become an important issue with the requirement of lead-free wiring, because doping of Pb to reduce whisker formation cannot be applied. It is therefore urged to better understand stress migration in tin, which is suspected to play a key role in whisker growth. We aim to study grain boundary diffusion in tin by atomistic simulation. After constructing an efficient interatomic potential suitable for diffusion of atoms using the genetic algorithm (GA), we perform molecular dynamics (MD) simulation of grain boundary diffusion in Sn under stress. We find that the magnitude of stress effect on diffusion depends on the boundary structure. Moreover, we examine the effect of impurities on vacancy migration by ab initio calculation to find atom doping that has potential to suppress diffusion.

GRAIN BOUNDARY DIFFUSION OF BULK INTERSTITIALS IN ALPHA-ZIRCONIUM

1990 ◽  
Vol 51 (C1) ◽  
pp. C1-691-C1-696 ◽  
Author(s):  
K. VIEREGGE ◽  
R. WILLECKE ◽  
Chr. HERZIG
Keyword(s):  
Grain Boundary ◽  
Boundary Diffusion ◽  
Grain Boundary Diffusion

Room-temperature grain boundary diffusion data measured from historical artifacts

2005 ◽  
Vol 96 (10) ◽  
pp. 1187-1192 ◽  
Author(s):  
Raymond J. Kremer ◽  
Mysore A. Dayananda ◽  
Alexander H. King
Keyword(s):  
Grain Boundary ◽  
Room Temperature ◽  
Boundary Diffusion ◽  
Grain Boundary Diffusion ◽  
Diffusion Data
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