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

Abstract

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.

Authors:
; ; ; ;  [1]
  1. Materials Physics Division, Indira Gandhi Center for Atomic Research, Kalpakkam-603 102 (India)
Publication Date:
OSTI Identifier:
21608134
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1349; Journal 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); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Babu, S Hari, Rajaraman, R, Govindaraj, R, Amarendra, G, and Sundar, C S. Positron Annihilation Studies in Search of Fine Precipitates in Fe-9Cr alloys. United States: N. p., 2011. Web. doi:10.1063/1.3606332.
Babu, S Hari, Rajaraman, R, Govindaraj, R, Amarendra, G, & Sundar, C S. Positron Annihilation Studies in Search of Fine Precipitates in Fe-9Cr alloys. United States. https://doi.org/10.1063/1.3606332
Babu, S Hari, Rajaraman, R, Govindaraj, R, Amarendra, G, and Sundar, C S. 2011. "Positron Annihilation Studies in Search of Fine Precipitates in Fe-9Cr alloys". United States. https://doi.org/10.1063/1.3606332.
@article{osti_21608134,
title = {Positron Annihilation Studies in Search of Fine Precipitates in Fe-9Cr alloys},
author = {Babu, S Hari and Rajaraman, R and Govindaraj, R and Amarendra, G and Sundar, C S},
abstractNote = {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.},
doi = {10.1063/1.3606332},
url = {https://www.osti.gov/biblio/21608134}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1349,
place = {United States},
year = {Fri Jul 15 00:00:00 EDT 2011},
month = {Fri Jul 15 00:00:00 EDT 2011}
}