Elevated-temperature fatigue characterization of transition joint weld metal and composite material in support of LMFBR steam generator development

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7218933

Brinkman, C R; Strizak, J P; King, J F

Piping systems in Liquid Metal Fast Breeder Reactor (LMFBR) plants will require transition joint weldments between austenitic and ferritic materials. Specifically, annealed 2 /sup 1///sub 4/ Cr-1 Mo steel will be welded with ERNiCr-3 by the hot wire automatic gas tungsten-arc process. These weldments will see elevated-temperature service for periods of up to 30 years and, accordingly, prototypic weldments will require extensive mechanical property characterization. The objective of this effort was to define the strain-controlled low-cycle fatigue behavior of as-deposited and stress-relieved ERNiCr-3 weld metal and to develop test methods for establishing the cyclic behavior of heat-affected zone (HAZ) material. Low cycle fatigue and the cyclic stress-strain response for ERNiCr-3 were established over the temperature range from 295 to 866 K. A number of low-cycle fatigue tests of hourglass-shaped specimens demonstrated that the low-cycle fatigue behavior of HAZ material adjacent to the fusion line could be characterized.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7218933
• Report Number(s): CONF-770524-3
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
ARC WELDING
BREEDER REACTORS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
EPITHERMAL REACTORS
FABRICATION
FAST REACTORS
FATIGUE
FBR TYPE REACTORS
GAS TUNGSTEN-ARC WELDING
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
NICKEL ALLOYS
NICKEL STEELS
NICKEL-CHROMIUM STEELS
NIOBIUM ALLOYS
REACTORS
STEELS
TANTALUM ALLOYS
WELDED JOINTS
WELDING