Effect of cold work on low-temperature sensitization behaviour of austenitic stainless steels

Kain, Vivekanand; Chandra, K.; Adhe, K.N.; De, P.K.

doi:10.1016/j.jnucmat.2004.05.008

Cited by 125 publications

(60 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies further demonstrated that no deformation-induced martensite appeared at higher Md temperatures. 24,25) The martensite measurement results, Fig. 7, substantiate that no martensite phase transformation occurred during the fatigue crack growth tests in air at 300 C. No crack closure effect due to phase transformation was observed.…”

Section: Metallographic Featuressupporting

confidence: 57%

Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel in a Simulated BWR Coolant Environment

2009

View full text Add to dashboard Cite

Fatigue crack growth tests were performed to evaluate the effect of cold work on the fatigue behavior of 304L stainless steel in the ambient air at room temperature and 300 C and in a simulated BWR coolant environment, respectively. The fatigue crack growth rates (FCGRs) for the as-received (AR) and cold-rolled specimens at room temperature were in the same range and the FCGRs obtained at 300 C in air were higher than those at room temperature. In addition, the FCGRs for the AR specimens were higher at 300 C in air compared with those for the coldrolled. The specimens tested in the water environment at 300 C showed higher corrosion fatigue crack growth rates (CFCGRs) relative to those measured in air at room temperature and 300 C. Local quasi-cleavages could account for the observation that the FCGRs in air at 300 C were faster than at room temperature. The dominant fracture features of quasi-cleavages, along with corrosion products, were observed with all the 304L specimens tested in the simulated BWR water environment, which could be related to the higher crack growth rates in the corrosive environment.

show abstract

Section: Metallographic Featuressupporting

confidence: 57%

Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel in a Simulated BWR Coolant Environment

2009

View full text Add to dashboard Cite

show abstract

“…That fact that sensitization occurs in high-energy-rate forgings has been pointed out in earlier studies (12)(13)(14) and it may appear occasionally in reservoir microstructures. Furthermore, since cold work and nitrogen increase the kinetics of sensitization in Types 304L and 304LN stainless steels (15)(16), these factors will increase the potential for sensitization in Type 21-6-9 stainless steel, too. The reservoir manufacturing community should be diligent in ensuring that any potential for sensitization be minimized because of its detrimental effect on fracture toughness.…”

Section: Discussionmentioning

confidence: 99%

Tritium Aging Effects on the Fracture Toughness Properties of Forged Stainless Steel

Morgan

2008

Ceramic Transactions Series

View full text Add to dashboard Cite

“…The fracture toughness reduction over time is an aging effect and a form of hydrogen embrittlement that is made worse by the effects of decay helium on the deformation properties of the material [1][2][3]. There is widespread interest in the effects of hydrogen, tritium, decay helium, and irradiation on the structural properties of these materials [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Hydrogen, Tritium, and Heat Treatment on the Deformation and Fracture Toughness Properties of Stainless Steel

Morgan¹,

Tosten²,

Chapman³

2014

International Hydrogen Conference (IHC 2012)

View full text Add to dashboard Cite

The deformation and fracture toughness properties of forged stainless steels pre-charged with tritium were compared to the deformation and fracture toughness properties of the same steels heat treated at 773 K or 873 K and precharged with hydrogen. Forged stainless steels pre-charged with tritium exhibit an aging effect: Fracture toughness values decrease with aging time after precharging because of the increase in concentration of helium from tritium decay. This study shows that forged stainless steels given a prior heat treatment and then pre-charged with hydrogen also exhibit an aging effect: Fracture toughness values decrease with increasing time at temperature. A microstructural analysis showed that the fracture toughness reduction in the heat-treated steels was due to patches of recrystallized grains that form within the forged matrix during the heat treatment. The combination of hydrogen and the patches of recrystallized grains resulted in more deformation twinning. Heavy deformation twinning on multiple slip planes was typical for the hydrogen-charged samples; whereas, in the non-charged samples, less twinning was observed and was generally limited to one slip plane. Similar effects occur in tritium pre-charged steels, but the deformation twinning is brought on by the hardening associated with decay helium bubbles in the microstructure.

show abstract

Effect of cold work on low-temperature sensitization behaviour of austenitic stainless steels

Cited by 125 publications

References 31 publications

Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel in a Simulated BWR Coolant Environment

Corrosion Fatigue Behavior of Cold-Worked 304L Stainless Steel in a Simulated BWR Coolant Environment

Tritium Aging Effects on the Fracture Toughness Properties of Forged Stainless Steel

The Effects of Hydrogen, Tritium, and Heat Treatment on the Deformation and Fracture Toughness Properties of Stainless Steel

Contact Info

Product

Resources

About