Fatigue short crack behaviour in metastable austenitic stainless steels with different grain sizes

2001 ◽  
Vol 319-321 ◽  
pp. 521-526 ◽  
Author(s):  
Jacques Stolarz ◽  
Natacha Baffie ◽  
Thierry Magnin
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Short Crack ◽  
Grain Sizes

Influence of Grain Size on Recrystallisation During hot Working of Austenitic Stainless Steels

1999 ◽  
Vol 578 ◽  
Author(s):  
J. A. Whiteman ◽  
Y. Choi ◽  
C.M. Sellars
Keyword(s):  
Grain Size ◽  
Stainless Steels ◽  
Experimental Studies ◽  
Austenitic Stainless Steels ◽  
Hot Working ◽  
Nucleation Density ◽  
Empirical Relationships ◽  
Physically Based Model ◽  
Grain Sizes ◽  
Physically Based

AbstractDuring the hot rolling of austenitic stainless steels, complete static recrystallisation is expected between passes unless finishing temperatures are low. Typically progressive refinement takes place to grain sizes in the range 20–50μm. However, most experimental studies of the effect of strain, strain rate, temperature and initial grain size on recrystallisation kinetics and recrystallised grain size under hot working conditions have been carried out on initial grain sizes greater than 50μm. Empirical relationships from these data and from more limited results of CMn steels have been extrapolated to smaller grain sizes for use in models of microstructural evolution during rolling.Recent development of a physically based model for the effects of initial grain size, assuming that site saturated nucleation occurs at grain corners, grain edges, grain faces and at intragranular sites leads to interdependence of the effects of strain and grain sizeon nucleation density and hence on recrystallised grain size and recrystallisation rate. Experimental evidence available in the literature and some new results on finer grained Type 316 stainless steel are reviewed and compared with the expectations from the model.

scholarly journals A Compendium of Mechanical Testing of Austenitic Stainless Steels in Hydrogen

2018 ◽  
Author(s):  
Poh-Sang Lam ◽  
Andrew J. Duncan ◽  
Michael J. Morgan ◽  
Robert L. Sindelar ◽  
Thad M. Adams
Keyword(s):  
High Pressure ◽  
Test Data ◽  
Stainless Steels ◽  
Tensile Ductility ◽  
Nickel Content ◽  
Austenitic Stainless Steels ◽  
Hydrogen Gas ◽  
Savannah River ◽  
Grain Sizes ◽  
Pressure Hydrogen

Archival materials test data on austenitic stainless steels for service in high pressure hydrogen gas has been reviewed. The bulk of the data were from tests conducted prior to 1983 at the Savannah River Laboratory, the predecessor to the Savannah River National Laboratory, for pressures up to 69 MPa (10,000 psi) and at temperatures within the range from 78 to 400 K (−195 to 127 °C). The data showed several prominent effects and correlations with test conditions: • There was a significant reduction in tensile ductility as measured by reduction of area or by the total elongation with hydrogen. Hydrogen effects were observed when the specimens were tested in the hydrogen environment, or the specimens were precharged in high pressure hydrogen and tested in air or helium. • There was a significant reduction in fracture toughness with hydrogen (and sometimes in tearing modulus which is proportional to the slope of the crack resistance curve). • The effects of hydrogen on ductility can be correlated to the nickel content of the iron-chromium-nickel steels. The optimal nickel content to retain the high tensile ductility in these alloys was 10 to at least 20 wt. %. • The effects of hydrogen can be correlated to the grain size. Large grain sizes exhibited a greater loss of ductility compared to small grain sizes. The Savannah River Laboratory test data, especially those not readily available in the open literature, along with the sources of the data, are documented in this paper.

Results From Environmentally-Assisted Short Crack Fatigue Testing on Austenitic Stainless Steels

2021 ◽  
Author(s):  
Ben Coult ◽  
Adam Griffiths ◽  
Jack Beswick ◽  
Peter Gill ◽  
Norman Platts ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Fatigue Testing ◽  
Austenitic Stainless Steels ◽  
Short Crack

Negative-R Fatigue Short Crack Growth Rate Testing on Austenitic Stainless Steels

2021 ◽  
Author(s):  
Adam Griffiths ◽  
Ben Coult ◽  
Peter Gill ◽  
Norman Platts ◽  
Jonathan Mann
Keyword(s):  
Growth Rate ◽  
Crack Growth Rate ◽  
Crack Growth ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Short Crack ◽  
Rate Testing

Cavitation wear behaviour of austenitic stainless steels with different grain sizes

Wear ◽  
2005 ◽  
Vol 258 (1-4) ◽  
pp. 503-510 ◽  
Author(s):  
G. Bregliozzi ◽  
A. Di Schino ◽  
S.I.-U. Ahmed ◽  
J.M. Kenny ◽  
H. Haefke
Keyword(s):  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Wear Behaviour ◽  
Grain Sizes ◽  
Cavitation Wear

Radiation Damage Studies with the HVEM

1972 ◽  
Vol 30 ◽  
pp. 680-681
Author(s):  
J. J. Laidler ◽  
B. Mastel
Keyword(s):  
Radiation Damage ◽  
Stainless Steels ◽  
Volume Expansion ◽  
Austenitic Stainless Steels ◽  
Test Facility ◽  
Fast Breeder Reactors ◽  
Breeder Reactors ◽  
Under Construction ◽  
Development Laboratory ◽  
Insight Into

One of the major materials problems encountered in the development of fast breeder reactors for commercial power generation is the phenomenon of swelling in core structural components and fuel cladding. This volume expansion, which is due to the retention of lattice vacancies by agglomeration into large polyhedral clusters (voids), may amount to ten percent or greater at goal fluences in some austenitic stainless steels. From a design standpoint, this is an undesirable situation, and it is necessary to obtain experimental confirmation that such excessive volume expansion will not occur in materials selected for core applications in the Fast Flux Test Facility, the prototypic LMFBR now under construction at the Hanford Engineering Development Laboratory (HEDL). The HEDL JEM-1000 1 MeV electron microscope is being used to provide an insight into trends of radiation damage accumulation in stainless steels, since it is possible to produce atom displacements at an accelerated rate with 1 MeV electrons, while the specimen is under continuous observation.

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.

Oxidation behavior of 26Cr-16Ni and AISI 309 austenitic stainless steels in air flow at 1,173 K

2015 ◽  
Vol 57 (7-8) ◽  
pp. 597-601 ◽  
Author(s):  
Peeraya Pipatnukun ◽  
Panyawat Wangyao ◽  
Gobboon Lothongkum
Keyword(s):  
Stainless Steels ◽  
Oxidation Behavior ◽  
Air Flow ◽  
Austenitic Stainless Steels

EPRI P87

Alloy Digest ◽  
2011 ◽  
Vol 60 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Properties ◽  
Stainless Steels ◽  
Austenitic Stainless Steels

Abstract EPRI P87 is a MMA electrode designed for dissimilation joints between austenitic stainless steels (i.e. 304H) and a creep resisting CrMo alloy (i.e. P91). This datasheet provides information on composition and tensile properties as well as fracture toughness. It also includes information on joining. Filing Code: Ni-685. Producer or source: Metrode Products Ltd.

CARPENTER STAINLESS 304+B

Alloy Digest ◽  
1961 ◽  
Vol 10 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Cross Section ◽  
Stainless Steels ◽  
Austenitic Stainless Steels ◽  
Heat Treating ◽  
Neutron Absorption ◽  
Absorption Cross ◽  
Type 304 ◽  
Conventional Type ◽  
Neutron Absorption Cross Section

Abstract Carpenter Stainless 304+B is similar to conventional Type 304 with the addition of boron to give it a much higher thermal neutron absorption cross-section than other austenitic stainless steels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-121. Producer or source: Carpenter.

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