scholarly journals The role of grain boundary chemistry and structure in the environmentally-assisted intergranular cracking of nickel-base alloys

1992 ◽  
Author(s):  
G.S. Was
Keyword(s):  
Grain Boundary ◽  
Intergranular Cracking ◽  
Nickel Base ◽  
Boundary Chemistry

A Comparison of Grain Boundary Monolayer Segregation Measurements Made Using Fegstem and Auger Spectroscopy

1996 ◽  
Vol 439 ◽  
Author(s):  
S. B. Fisher ◽  
P. Spellward ◽  
R. Scowen ◽  
B. Lee
Keyword(s):  
Grain Boundary ◽  
Boundary Data ◽  
Auger Spectroscopy ◽  
Theoretical Description ◽  
Electron Optics ◽  
Highly Active ◽  
Active Electron ◽  
Nickel Base ◽  
Boundary Chemistry ◽  
The Relationship

AbstractThe active electron optics suite at Magnox Electric's Berkeley Centre has a VG HB501 FEGSTEM and a FE-sourced Auger Microprobe (a Fisons Microlab-F) which are routinely used for grain boundary chemistry studies in a variety of highly active austenitic and ferritic steels and nickel base alloys.In a number of investigations sufficient grain boundary data have been obtained to allow a meaningful comparison between the two instruments to be made. It has been established that for the overwhelming majority of materials and conditions there exists a reasonable correlation between the two sets of compositional (on-boundary) data.This paper presents this correlation and gives a simple theoretical description justifying the relationship between the raw data from the instruments. Examples are given of materials and conditions for which the correlation cannot be established and this leads to a discussion of the usefulness of the availability of the correlation.

Atomic-scale Investigation of Liquid-Metal-Embrittlement Crack-path: Revealing Mechanism and Role of Grain Boundary Chemistry

2021 ◽  
Vol 204 ◽  
pp. 116519
Author(s):  
M.H. Razmpoosh ◽  
B. Langelier ◽  
E. Marzbanrad ◽  
H.S. Zurob ◽  
N. Zhou ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Grain Boundary ◽  
Crack Path ◽  
Liquid Metal Embrittlement ◽  
Atomic Scale ◽  
Boundary Chemistry
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