Application of Hastelloy X in gas-cooled reactor systems

Technical Report · Fri Oct 01 00:00:00 EDT 1976

DOI:https://doi.org/10.2172/7347624· OSTI ID:7347624

Brinkman, C. R.; Rittenhouse, P. L.; Corwin, W. R.; Strizak, J. P.; Lystrup, A.; DiStefano, J. R.

Hastelloy X, an Ni--Cr--Fe--Mo alloy, may be an important structural alloy for components of gas-cooled reactor systems. Expected applications of this alloy in the High-Temperature Gas-Cooled Reactor (HTGR) are discussed, and the development of interim mechanical properties and supporting data are reported. Properties of concern include tensile, creep, creep-rupture, fatigue, creep-fatigue interaction, subcritical crack growth, thermal stability, and the influence of helium environments with controlled amounts of impurities on these properties. In order to develop these properties in helium environments that are expected to be prototypic of HTGR operating conditions, it was necessary to construct special environmental test systems. Details of construction and operating parameters are described. Interim results from tests designed to determine the above properties are presented. To date a fairly extensive amount of information has been generated on this material at Oak Ridge National Laboratory and elsewhere concerning behavior in air, which is reviewed. However, only limited data are available from tests conducted in helium. Comparisons of the fatigue and subcritical growth behavior in air between Hastelloy X and a number of other structural alloys are given.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7347624
• Report Number(s): ORNL/TM-5405; TRN: 77-000221
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HASTELLOY X
CORROSION RESISTANCE
MECHANICAL PROPERTIES
HTGR TYPE REACTORS
REACTOR MATERIALS
TEST FACILITIES
DESIGN
AIR
CRACKS
FATIGUE
HELIUM
TESTING
USES
ALLOYS
CHROMIUM ALLOYS
COBALT ALLOYS
CRYOGENIC FLUIDS
ELEMENTS
FLUIDS
GAS COOLED REACTORS
GASES
GRAPHITE MODERATED REACTORS
HASTELLOYS
HEAT RESISTING ALLOYS
IRON ALLOYS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
RARE GASES
REACTORS
TUNGSTEN ALLOYS
360103* - Metals & Alloys- Mechanical Properties
360105 - Metals & Alloys- Corrosion & Erosion