Abstract
We report ongoing experimental work on fracture and brittle-ductile transitions in vanadium, iron and iron-9% chromium single crystals and polycrystals. Tests were carried out by four-point bending of pre-cracked specimens in the temperature range 77-300 K, at a variety of strain rates. For a given material, variation of the brittle-ductile transition temperature with strain rate allows us to estimate an activation energy for the controlling process; for vanadium this was found to be ∼0.37 eV, for iron ∼0.21 eV and for iron-9% chromium ∼0.11 eV.
Original language | English |
---|---|
Pages (from-to) | 637-643 |
Number of pages | 7 |
Journal | Journal of Nuclear Materials |
Volume | 367-370 A |
Issue number | SPEC. ISS. |
DOIs | |
Publication status | Published - Aug 1 2007 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering