SYMPOSIA PAPER Published: 01 January 1978
STP33397S

Elevated Temperature Fatigue Characterization of Transition Joint Weld Metal and Heat Affected Zone in Support of Breeder Steam Generator Development

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Piping systems in breeder reactor plants will require transition joint weldments between austenitic and ferritic materials. Specifically, annealed 2¼Cr-1Mo steel will be welded with ERNiCr-3 using the hot wire automatic gas tungsten-arc process. These weldments may see elevated temperature service for periods of up to 30 years, and, accordingly, prototypic weldments will require extensive mechanical property characterization. It was the objective of this effort 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 cyclic stress-strain response for ERNiCr-3 were established over the temperature range of 295 to 866 K. A number of low cycle fatigue test results are reported for hourglass-shaped specimens that demonstrated that the low cycle fatigue behavior of HAZ material adjacent to the fusion line could be characterized.

Author Information

Brinkman, CR
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tenn
Strizak, JP
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tenn
King, JF
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tenn
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Details
Developed by Committee: E08
Pages: 218–234
DOI: 10.1520/STP33397S
ISBN-EB: 978-0-8031-4719-5
ISBN-13: 978-0-8031-0348-1