Dynamic strength of uranium at high temperatures

E. Zaretsky, B. Herrmann, D. Shvarts

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Unalloyed uranium (PU) and uranium-0.78 wt% Ti alloy (UT) were studied in VISAR-monitored planar impact experiments with initial sample temperatures ranged from 27°C to 860°C. The recorded waveforms was used for obtaining the stress-strain σ(ε) and deviator stress-strain s(ε) diagrams, the conventional elastic limit Y0.2, and the spall strength of the alloys at different testing temperatures. The strengths Y0.2 of both the materials stay almost constant up to the temperature of α - β transformation, increase strongly in the β-phase domain, and abruptly drop above the temperature of β- γ transformation. The temperature dependences of the spall strength of alloys differ from those of the compressive strengths indicating the prevailing role of the void nucleation (over the void growth) in the spallation process. The most striking finding of the work is the existence of β-uranium at pressures some 3 GPa higher than that permitted thermodynamicully. The life time and the borders of existence of this non-equilibrium phase are unknown and should be determined in future.

Original languageEnglish
Title of host publicationProceedings - 8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading, EURODYMAT 2006
Pages971-976
Number of pages6
DOIs
StatePublished - 1 Aug 2006
Event8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading - Dijon, France
Duration: 11 Sep 200615 Sep 2006

Publication series

NameJournal De Physique. IV : JP
Volume134
ISSN (Print)1155-4339
ISSN (Electronic)1764-7177

Conference

Conference8th International Conference on Mechanical and Physical Behaviour of Materials under Dyanmic Loading
Country/TerritoryFrance
CityDijon
Period11/09/0615/09/06

ASJC Scopus subject areas

  • General Physics and Astronomy

Fingerprint

Dive into the research topics of 'Dynamic strength of uranium at high temperatures'. Together they form a unique fingerprint.

Cite this