SYMPOSIA PAPER Published: 01 January 2000

Interaction of Void-Induced Phase Instability and Subsequent Void Growth in AISI 304 Stainless Steel


There are two types of radiation-induced phase instabilities that AISI 304 is prone to develop at temperatures in the 400–550°C range at dpa rates typical of fast reactors, and there is some concern that these instabilities may shift to lower temperatures (≥400°C) at lower dpa rates typical of pressurized water reactors.

One of these instabilities, the void-induced γ→α transformation, is investigated in this study at dpa rates typical of both types of reactors. The mode of nickel segregation shifts somewhat at PWR-relevant conditions, but the γ→α transformation has not yet been observed in the range 380–400°C for swelling levels less than 2%.

Author Information

Porter, DL
Argonne National Laboratory-West, Idaho Falls, ID, USA
Garner, FA
Pacific Northwest National Laboratory, Richland, WA, USA
Bond, GM
New Mexico Institute of Mining and Technology, Socorro, NM, USA
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Developed by Committee: E10
Pages: 884–893
DOI: 10.1520/STP12439S
ISBN-EB: 978-0-8031-5419-3
ISBN-13: 978-0-8031-2852-1