Positron Annihilation Studies in Search of Fine Precipitates in Fe-9Cr alloys

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3606332· OSTI ID:21608134

Babu, S Hari; Rajaraman, R; Govindaraj, R; Amarendra, G; Sundar, C S ^[1]

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1. Materials Physics Division, Indira Gandhi Center for Atomic Research, Kalpakkam-603 102 (India)

Positron annihilation lifetime studies were carried out on cold worked pure Fe and Fe-9Cr alloy subjected to isochronal annealing in the temperature range from 300 to 1323 K. The measured lifetimes of Fe-9Cr alloy showed three distinct annealing stages as compared to pure Fe viz., initial annealing of defects, a plateau between 623 K and 873 K and noticeable increase beyond 1123 K. The second annealing stage is likely due to the formation of chromium rich nanoclusters. Third annealing stage beyond 1123 K is attributed to highly defected martensitic phase formation during cooling from y-phase.

• OSTI ID: 21608134
• Journal Information: AIP Conference Proceedings, Vol. 1349, Issue 1; Conference: 55. DAE solid state physics symposium 2010, Manipal (India), 26-30 Dec 2010; Other Information: DOI: 10.1063/1.3606332; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
ANNIHILATION
CHROMIUM
CRYSTAL DEFECTS
DEFORMATION
INTERMETALLIC COMPOUNDS
IRON
LIFETIME
MARTENSITIC STEELS
NANOSTRUCTURES
PHASE TRANSFORMATIONS
POSITRONS
PRECIPITATION
TEMPERATURE DEPENDENCE
ALLOYS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CARBON ADDITIONS
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
HEAT TREATMENTS
INTERACTIONS
IRON ALLOYS
IRON BASE ALLOYS
LEPTONS
MATTER
METALS
PARTICLE INTERACTIONS
SEPARATION PROCESSES
STEELS
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENTS