Room-Temperature Stress Corrosion Cracking Resistance of Post-Weld Heat-Treated Austenitic Weld Metals

CORROSION ◽  
1990 ◽  
Vol 46 (9) ◽  
pp. 734-742 ◽  
Author(s):  
K. N. Krishnan ◽  
K. P. Rao
Keyword(s):  
Stress Corrosion ◽  
Temperature Stress ◽  
Stress Corrosion Cracking ◽  
Room Temperature ◽  
Corrosion Cracking ◽  
Cracking Resistance ◽  
Weld Metals ◽  
Heat Treated ◽  
Weld Heat

The Effect of Ferrite Content on Stress Corrosion Cracking in Duplex Stainless Steel Weld Metals at Room Temperature

CORROSION ◽  
1979 ◽  
Vol 35 (2) ◽  
pp. 45-54 ◽  
Author(s):  
W. A. BAESLACK ◽  
D. J. DUQUETTE ◽  
W. F. SAVAGE
Keyword(s):  
Stainless Steel ◽  
Weld Metal ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Room Temperature ◽  
Corrosion Cracking ◽  
Steel Weld ◽  
Weld Metals ◽  
Stainless Steel Weld ◽  
Type 304

Abstract Constant extension rate tests have been conducted on Type 304 stainless steel base metal specimens and on stainless steel weld metal specimens with ferrite contents of Ferrite Number 1, 3, 6, 11, 16, and 24, at room temperature in deaerated, 1 N HCI. Stress corrosion cracking in wholly austenitic Type 304 base metal occurs transgranularly, while cracking in duplex weld metal occurs either by the combined action of stress assisted ferrite dissolution and stress corrosion cracking (SCC) in the austenite or entirely by stress assisted dissolution of the ferrite. Ferrite content and distribution are important in determining both the stress corrosion susceptibility and crack morphology of duplex weld metals. The most susceptible duplex weld metals are those which exhibit a continuous or nearly continuous vermicular ferrite structure.

Stress Corrosion Cracking (SCC) of Nickel-Base Weld Metals in PWR Primary Water

2013 ◽  
Vol 747-748 ◽  
pp. 723-732 ◽  
Author(s):  
Ru Xiong ◽  
Ying Jie Qiao ◽  
Gui Liang Liu
Keyword(s):  
Residual Stresses ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Surface Condition ◽  
Cold Work ◽  
Corrosion Cracking ◽  
Pressurized Water ◽  
Weld Metals ◽  
Surface Residual Stresses ◽  
Primary Water

This discussion reviewed the occurrence of stress corrosion cracking (SCC) of alloys 182 and 82 weld metals in primary water (PWSCC) of pressurized water reactors (PWR) from both operating plants and laboratory experiments. Results from in-service experience showed that more than 340 Alloy 182/82 welds have sustained PWSCC. Most of these cases have been attributed to the presence of high residual stresses produced during the manufacture aside from the inherent tendency for Alloy 182/82 to sustain SCC. The affected welds were not subjected to a stress relief heat treatment with adjacent low alloy steel components. Results from laboratory studies indicated that time-to-cracking of Alloy 82 was a factor of 4 to 10 longer than that for Alloy 182. PWSCC depended strongly on the surface condition, surface residual stresses and surface cold work, which were consistent with the results of in-service failures. Improvements in the resistance of advanced weld metals, Alloys 152 and 52, to PWSCC were discussed.

Sign in / Sign up

Export Citation Format

Share Document