Biaxial thermal creep of two heats of V4Cr4Ti at 700 and 800 oC in a liquid lithium environment
Creators
- 1. Materials Science and Technology Division, Oak Ridge National Laboratory, P.O. Box 2008, MS 6138, Oak Ridge, TN 37831 (United States)
- 2. National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292 (Japan)
- 3. Nuclear Engineering Department, University of Tennessee, Knoxville, TN 37996 (United States)
- 4. NPESE, University of Fukui, Bunkyo, Fukui 910-8507 (Japan)
- 5. Institute for Materials Research, Tohoku University, Katahira, Sendai 980-8577 (Japan)
- 6. International Research Center for Nuclear Materials Science, Institute for Materials Research, Tohoku University, Oarai, Ibaraki 311-1313 (Japan)
Description
This paper presents biaxial thermal creep results for the vanadium alloy V4Cr4Ti in liquid lithium using US Heat 832665 and two batches of tubing made from NIFS-Heat-2. The tests were performed at 700 and 800 oC over a stress range of 30-120 MPa using pressurized tube specimens. Lithium environments changed C, N and O concentrations in V4Cr4Ti. Oxygen removal from the alloy to lithium was small when there was a significant pickup of nitrogen during exposures. The creep response of V4Cr4Ti was characterized by an inverted primary creep followed by a secondary creep or an accelerating creep up to creep rupture. A normal primary creep was also observed in US Heat 832665 when tested at 700 oC and 120 MPa. Improved creep rupture properties were observed in the JP-NIFS-Heat-2 specimens compared to the US-NIFS-Heat-2 specimens. Creep response of V4Cr4Ti is apparently dependent on the heat, tubing production, and stress and temperature conditions
Additional details
Identifiers
- DOI
- 10.1016/j.jnucmat.2007.03.081;
- PII
- S0022-3115(07)00470-9;
Publishing Information
- Journal Title
- Journal of Nuclear Materials
- Journal Volume
- 367-370
- Journal Page Range
- p. 788-793
- ISSN
- 0022-3115
- CODEN
- JNUMAM
Conference
- Title
- 12. international conference on fusion reactor materials
- Acronym
- ICFRM-12
- Dates
- 7-12 Dec 2005
- Place
- Santa Barbara, CA (United States)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39010271
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CHROMIUM ALLOYS; CREEP; HEAT; LITHIUM; NITROGEN; OXYGEN; RUPTURES; STRESSES; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; TITANIUM ALLOYS; VANADIUM ALLOYS
- Descriptors DEC
- ALKALI METALS; ALLOYS; ELEMENTS; ENERGY; FAILURES; MECHANICAL PROPERTIES; METALS; NONMETALS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.