Effect of heat treatment on grain boundary chemistry and resistance to intergranular corrosion of alloys 600 and 690

1997 ◽  
Vol 32 (3) ◽  
pp. 185-192 ◽  
Author(s):  
C. M. YOUNES ◽  
F. H. MORRISSEY ◽  
G. C. ALLEN ◽  
P. McINTYRE
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Intergranular Corrosion ◽  
Boundary Chemistry

Grain-boundary chemistry and intergranular corrosion in alloy 825

2000 ◽  
Vol 31 (4) ◽  
pp. 1163-1173 ◽  
Author(s):  
Y. -M. Pan ◽  
D. S. Dunn ◽  
G. A. Cragnolino ◽  
N. Sridhar
Keyword(s):  
Grain Boundary ◽  
Intergranular Corrosion ◽  
Boundary Chemistry

scholarly journals The Influence of Stored Energy on Grain Boundary Chemistry and Intergranular Corrosion Development in AA2024-T3 Alloy

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2299 ◽  
Author(s):  
Xinxin Zhang ◽  
Xiaorong Zhou ◽  
Guangyi Cai ◽  
Yang Yu ◽  
Xueqin Lu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Dislocation Density ◽  
Grain Boundary ◽  
Energy Distribution ◽  
Intergranular Corrosion ◽  
Stored Energy ◽  
Transmission Electron ◽  
The Difference ◽  
Boundary Chemistry

Following our previous research, the correlation between the micro-chemistry of grain boundary and the distribution of stored energy in AA2024-T3 alloy is investigated, using the combination of transmission Kikuchi diffraction and transmission electron microscopy. It is found that the difference of dislocation density, namely stored energy, between two neighboring grains significantly affects the micro-chemistry of the grain boundary. Further, it is revealed that intergranular corrosion development in the AA2024-T3 alloy is mainly attributed to the combined effect of grain boundary chemistry and stored energy distribution.

Enhancing the Localized Corrosion Resistance of High Strength 7010 Al-Alloy

2010 ◽  
Vol 138 ◽  
pp. 1-6 ◽  
Author(s):  
M. Bobby Kannan ◽  
V.S. Raja
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Grain Boundary ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Intergranular Corrosion ◽  
High Strength ◽  
Localized Corrosion ◽  
Al Alloy

This paper brings out the developments on heat-treatment and alloying to improve the stress corrosion cracking (SCC) behavior of 7010 Al-alloy. The role of microstructures including the grain boundary precipitates and recystallized grains and the relation of intergranular corrosion (IGC) on the SCC behavior of 7010 Al-alloy have been discussed.

Strain-induced martensite effects on transgranular carbide precipitation in type 304 stainless steels

1991 ◽  
Vol 49 ◽  
pp. 604-605
Author(s):  
A.H. Advani ◽  
L.E. Murr ◽  
D. Matlock
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Stress Corrosion Cracking ◽  
Stainless Steels ◽  
Deformation Twin ◽  
Austenitic Stainless Steels ◽  
Carbide Precipitation ◽  
Strain Induced Martensite ◽  
Type 304

Thermomechanically induced strain is a key variable producing accelerated carbide precipitation, sensitization and stress corrosion cracking in austenitic stainless steels (SS). Recent work has indicated that higher levels of strain (above 20%) also produce transgranular (TG) carbide precipitation and corrosion simultaneous with the grain boundary phenomenon in 316 SS. Transgranular precipitates were noted to form primarily on deformation twin-fault planes and their intersections in 316 SS.Briant has indicated that TG precipitation in 316 SS is significantly different from 304 SS due to the formation of strain-induced martensite on 304 SS, though an understanding of the role of martensite on the process has not been developed. This study is concerned with evaluating the effects of strain and strain-induced martensite on TG carbide precipitation in 304 SS. The study was performed on samples of a 0.051%C-304 SS deformed to 33% followed by heat treatment at 670°C for 1 h.

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