SEM Observations of Room Temperature Stress Corrosion Cracking of Austenitic Clad Metals / Rasterelektronenmikroskopische Untersuchungen zur Spannungsrißkorrosion austenitischer Auftragsschweißungen bei Raumtemperatur

1990 ◽  
Vol 27 (11) ◽  
pp. 570-576
Author(s):  
Kannurupatti Narayanan Krishnan ◽  
Kalvala Prasad Rao
Keyword(s):  
Stress Corrosion ◽  
Temperature Stress ◽  
Stress Corrosion Cracking ◽  
Room Temperature ◽  
Corrosion Cracking ◽  
Clad Metals

Stress Corrosion Cracking Behavior of 90/10 Cu-Ni Alloy in Sodium Sulfide Solutions

CORROSION ◽  
1991 ◽  
Vol 47 (4) ◽  
pp. 260-268 ◽  
Author(s):  
M. Islam ◽  
W. T. Riad ◽  
S. Al-Kharraz ◽  
S. Abo-Namous
Keyword(s):  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Room Temperature ◽  
Copper Matrix ◽  
Selective Dissolution ◽  
Corrosion Cracking ◽  
Cracking Behavior ◽  
Epma Analysis ◽  
Ni Alloy ◽  
Film Interface

Abstract The stress corrosion cracking (SCC) of 90/10 Cu-Ni alloy in sulfide solutions is not reported in the literature. The SCC behavior of the alloy was studied in dilute and concentrated Na2S solutions at room temperature. The alloy was found to be susceptible to SCC under slow strain rate conditions in the concentrated (0.1 to 1 M) sulfide solutions, but not in the dilute (0.002 to 0.03 M) solutions. On the basis of electrochemical data and EPMA analysis of the metal/film interface of the cracked samples, the mechanism of cracking can possibly be attributed to a dealloying (selective dissolution) phenomenon where the copper matrix but not the solute Ni is selectively removed.

Sign in / Sign up

Export Citation Format

Share Document