The dependence of irradiation creep in austenitic alloys on displacement rate and helium to dpa ratio
- Pacific Northwest National Lab., Richland, WA (United States)
- Washington State Univ., WA (United States)
- Oak Ridge National Lab., TN (United States)
Before the parametric dependencies of irradiation creep can be confidently determined, analysis of creep data requires that the various creep and non-creep strains be separated, as well as separating the transient, steady-state, and swelling-driven components of creep. When such separation is attained, it appears that the steady-state creep compliance, B{sub o}, is not a function of displacement rate, as has been previously assumed. It also appears that the formation and growth of helium bubbles under high helium generation conditions can lead to a significant enhancement of the irradiation creep coefficient. This is a transient influence that disappears as void swelling begins to dominate the total strain, but this transient can increase the apparent creep compliance by 100--200% at relatively low ({le}20) dpa levels.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 335396
- Report Number(s):
- DOE/ER--0313/23; ON: DE98004697
- Country of Publication:
- United States
- Language:
- English
Similar Records
The independence of irradiation creep in austenitic alloys of displacement rate and helium to dpa ratio
Irradiation creep and density changes observed in MA957 pressurized tubes irradiated to doses of 40-110 dpa at 400-750°C in FFTF
Extreme embrittlement of austenitic stainless steel irradiated to 75--81 dpa at 335--360 C
Technical Report
·
Mon Mar 31 23:00:00 EST 1997
·
OSTI ID:543296
Irradiation creep and density changes observed in MA957 pressurized tubes irradiated to doses of 40-110 dpa at 400-750°C in FFTF
Journal Article
·
Sat Dec 29 23:00:00 EST 2012
· Journal of Nuclear Materials, 428(1-3):170-175
·
OSTI ID:1227605
Extreme embrittlement of austenitic stainless steel irradiated to 75--81 dpa at 335--360 C
Technical Report
·
Sat Feb 28 23:00:00 EST 1998
·
OSTI ID:335397