SYMPOSIA PAPER Published: 01 January 2001

Post-Irradiation Deformation Microstructures in Fe-9Cr


The deformed microstructures of both irradiated and unirradiated Fe-9Cr uniaxial tensile specimens have been examined to identify controlling mechanisms. Deformation following irradiation is found to occur in poorly defined channels, causing formation of discrete steps at surfaces and delineated by nonuniformly distributed highly elongated voids. Deformation is by motion of a2<111> dislocations, which interact with and decompose irradiation-induced a<100> loops. The structure formed after extensive deformation consists of highly complex cell walls and moderate densities of individual slip dislocations.

Author Information

Gelles, DS
PNNL Materials Research Department, Richland, WA
Hamilton, ML
PNNL Materials Research Department, Richland, WA
Schäublin, R
EPFL-CRPP Fusion Technology, Villigen PSI, Switzerland
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Developed by Committee: E10
Pages: 523–534
DOI: 10.1520/STP10554S
ISBN-EB: 978-0-8031-5454-4
ISBN-13: 978-0-8031-2878-1