Irradiation induced creep in nanocrystalline high entropy alloys
Journal Article
·
· Acta Materialia
- Univ. of Illinois at Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Irradiation induced creep (IIC) compliance in NiCoFeCrMn high entropy alloys is measured as a function of grain size (30 < x < 80 nm) and temperature (23–500 °C). For 2.6 MeV Ag3+ irradiation at a dose rate of 1.5×10–3 dpa–1s–1 the transition from the recombination to sink limited regimes occurs at ~ 100 °C. In the sink-limited regime, the IIC compliance scales inversely with grain size, consistent with a recently proposed model for grain boundary IIC. The thermal creep rate is also measured; it does not become comparable to the IIC rate, however, until ~ 650 °C. Here, the results are discussed in context of defect kinetics in irradiated HEA systems.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of Illinois at Urbana-Champaign, IL (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Contributing Organization:
- Sandia National Laboratories
- Grant/Contract Number:
- AC04-94AL85000; NA0003525; SC0019875; FG02-05ER46217; FWP-15013170; NA-0003525; DE-SC0019875
- OSTI ID:
- 1650165
- Alternate ID(s):
- OSTI ID: 1607542; OSTI ID: 1774580
- Report Number(s):
- SAND-2020-8400J; 689923
- Journal Information:
- Acta Materialia, Vol. 182; ISSN 1359-6454
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 26 works
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