Published July 1987 | Version v1
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Investigations on crack growth in heat exchanging components with working temperatures above 800degC - a contribution to a HTR safety concept (SR 343)

Creators

Description

Experiments on the transferability of fracture mechanics data to thick walled tubes have been performed with the materials X10NiCrAlTi 32 20 (Alloy 800 H) and NiCr 22 Co 12 Mo (Inconel 617). The fatigue crack growth is well described by the linear elastic concept up to the highest testing temperatures (900degC). For the description of the creep crack propagation in tubes the parameter 'energy rate integral' seems to be suitable. (orig./HP)

Abstract (German)

Es wurden Versuche zur Uebertragbarkeit bruchmechanischer Kennwerte auf dickwandige Rohre durchgefuehrt. Die untersuchten Werkstoffe waren X10NiCrAlTi 32 20 (Alloy 800 H) und NiCr 22 Co 12 Mo (Inconel 617). Der linear-elastische Ansatz ist gut geeignet zur Beschreibung des Ermuedungsrisswachstums bis zu den hoechsten Versuchstemperaturen von 900degC. Fuer die Beschreibung des Kriechrisswachstums in Rohrgeometrien scheint der Parameter 'Energieratenintegral' geeignet zu sein. (orig./HP)

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Additional details

Additional titles

Subtitle (English)
Final report
Original title (German)
Untersuchung fehlerbehafteter primaerkreisumschliessender waermetauschender Komponenten mit Arbeitstemperaturen oberhalb 800degC als Beitrag zum HTR-Sicherheitskonzept (SR 343)
Original subtitle (German)
Abschlussbericht zur Forschungsaufgabe.

Publishing Information

Imprint Pagination
192 p.
Report number
Juel-Spez--408

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
19039834
Subject category
S36: MATERIALS SCIENCE; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
Descriptors DEI
ALLOY-FE44NI33CR21; ALLOY-NI54CR22CO13MO9; CRACK PROPAGATION; CREEP; FRACTURE MECHANICS; HEAT EXCHANGERS; HTGR TYPE REACTORS; PEBBLE BED REACTORS; PRIMARY COOLANT CIRCUITS; REACTOR SAFETY; TUBES; VERY HIGH TEMPERATURE
Descriptors DEC
ALLOYS; ALUMINIUM ADDITIONS; CHROMIUM ALLOYS; COBALT ALLOYS; COOLING SYSTEMS; CORROSION RESISTANT ALLOYS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; HEAT RESISTING ALLOYS; HOMOGENEOUS REACTORS; INCOLOY ALLOYS; INCONEL ALLOYS; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; MECHANICS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NICKEL BASE ALLOYS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; SAFETY; SOLID HOMOGENEOUS REACTORS; TITANIUM ADDITIONS