Published August 2003 | Version v1
Journal article Metadata-only

Theoretical study of hydride fissuring kinetics in Zr alloys

Creators

  • 1. FGUP VNIINM im. akad. A.A. Bochvara, Moscow (Russian Federation)
  • 2. MIFI, Moscow (Russian Federation)

Description

A diffusion model is developed to calculate the velocity of delayed hydride cracking (DHC) in unirradiated zirconium base alloys. The velocity of DHC is predicted for fuel cans in WWER and RBMK reactors as well as for pressure tubes in CANDU reactors. It is shown that in a temperature range of 150-330 deg C, other factors being the same, the velocity of DHC in Zr - 2.5% Nb alloy is far greater than in alloy Eh110. It is believed that the tendency of CANDU pressure tubes to fracture by a DHC mechanism is mainly determined by their high strength properties

Abstract (Russian)

Разработана диффузионная модель расчета скорости замедленного гидридного растрескивания (ЗГР) в необлученных сплавах на основе циркония. Прогнозируется скорость ЗГР в твэльных оболочках реакторов ВВЭР и РБМК, а также в трубах давления реакторов CANDU. Показано, что в температурном интервале 150-330 град С при прочих равных условиях скорость ЗГР в сплаве Zr - 2.5% Nb значительно выше, чем в сплаве Э110. Можно предположить, что склонность труб давления CANDU к разрушению по механизму ЗГР определяется, главным образом, их высокими прочностными характеристиками

Additional details

Additional titles

Original title (Russian)
Теоретическое исследование кинетики гидридного растрескивания в сплавах циркония

Publishing Information

Journal Title
Metallovedenie i Termicheskaya Obrabotka Metallov
Journal Issue
no.8
Journal Page Range
p. 35-40
ISSN
0026-0819
CODEN
MTOMAX

Conference

Title
Russian conference. Nuclear technique materials (MAYaT-1)
Original Conference Title
Rossijskaya konferentsiya. Materialy yadernoj tekhniki (MAYaT-1)
Dates
23-27 Sep 2002
Place
Agoj (Russian Federation)

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
35081182
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CANDU TYPE REACTORS; CRACK PROPAGATION; DIFFUSION; FRACTURE MECHANICS; FUEL CANS; HYDRIDATION; HYDROGEN; LWGR TYPE REACTORS; MATHEMATICAL MODELS; PRESSURE TUBES; SOLUBILITY; TEMPERATURE RANGE 0400-1000 K; WWER TYPE REACTORS; ZIRCONIUM BASE ALLOYS
Descriptors DEC
ALLOYS; CHEMICAL REACTIONS; ELEMENTS; ENRICHED URANIUM REACTORS; GRAPHITE MODERATED REACTORS; HEAVY WATER MODERATED REACTORS; MECHANICS; NONMETALS; POWER REACTORS; PRESSURE TUBE REACTORS; PWR TYPE REACTORS; REACTORS; TEMPERATURE RANGE; THERMAL REACTORS; TRANSITION ELEMENT ALLOYS; TUBES; WATER COOLED REACTORS; WATER MODERATED REACTORS; ZIRCONIUM ALLOYS

Optional Information

Notes
20 refs., 5 figs.