Effects of prior cold work and sensitization heat treatment on chloride stress corrosion cracking in type 304 stainless steels

2001 ◽  
Vol 43 (8) ◽  
pp. 1519-1539 ◽  
Author(s):  
C Garcı́a ◽  
F Martı́n ◽  
P.De Tiedra ◽  
J.A Heredero ◽  
M.L Aparicio
CORROSION ◽  
1958 ◽  
Vol 14 (12) ◽  
pp. 60-64 ◽  
Author(s):  
L. R. SCHARFSTEIN ◽  
W. F. BRINDLEY

Abstract Overstressed U-bends of Types 304 and 347 stainless steels were exposed to water containing chloride ions to determine the susceptibility of these steels to stress corrosion cracking between the temperatures of 165 F and 200 F. The pH was controlled at 6.5 to 7.5 and 10.6 to 11.2 for the tests. At the high pH, cracks appeared at the edges with little evidence of pitting. At the neutral pH, cracks were found at the edges and associated with pits. Sensitized Type 304 had longer and deeper cracks than annealed Types 304 and 347 in the same exposure time. Conclusion is made that chloride stress corrosion cracking of these steels in the temperature range of 165 F to 200 F is less severe than that experienced at 500 F and that specific conditions are required for corrosion cracking to occur at all. 3.2.2


CORROSION ◽  
1974 ◽  
Vol 30 (4) ◽  
pp. 139-149 ◽  
Author(s):  
I. L. WILSON ◽  
F. W. PEMENT ◽  
R. G. ASPDEN

Abstract Caustic stress corrosion cracking (SCC) experiments have been conducted on Type 304, 304L, 316, 316L, and USS 18-18-2 stainless steels. The environments used were deoxygenated 50% NaOH solution at 316 and 371 C (600 and 700 F), deoxygenated 10% NaOH solution at 316 C and atmospheric boiling [~149 C (300 F)] 50% NaOH. The effect of grain size, cold work, and sensitization has been studied. Metallurgical structures were examined with light microscopy and the accelerated Strauss test. Exposed specimens were studied with the light microscope and the fracture surfaces were studied with the scanning electron microscope (SEM). Variations in crack morphology were observed with caustic concentration and alloy content. Certain sensitization treatments were the only conditions identified in Type 304 as beneficial in increasing the high temperature caustic stress corrosion resistance.


1985 ◽  
Vol 16 (2) ◽  
pp. 285-289 ◽  
Author(s):  
P. Muraleedharan ◽  
H. S. Khatak ◽  
J. B. Gnanamoorthy ◽  
P. Rodriguez

Author(s):  
Masato Koshiishi ◽  
Hitoshi Seto ◽  
Shigeaki Tanaka ◽  
Ryoji Obata

Abstract The Hashimoto-Koshiishi model is the predictive mechanistic model for crack growth rates (CGRs) of stress corrosion cracking (SCC). The simplified formula of the Hashimoto-Koshiishi model was developed for the calculation of CGRs of irradiated Type 316L stainless steels (SSs). This study evaluated the applicability of the developed formula to various types of stainless steels by analyzing experimental data of CGRs. The developed formula was determined to be applicable for Type 304L SSs and 316NG SSs as well as Type 316L SSs. On the other hand, the formula was unsuitable for irradiated Type 304 SSs because the mechanical properties and the Cr concentrations at the grain boundaries of Type 304 SSs were different from these quantities for Type 316L SSs.


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