Positron annihilation lifetime measurement of electron irradiated Fe-Cr-Ni-P alloy

Hideo Watanabe, Eiichi Kuramoto, Naoaki Yoshida

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Fe-16%Cr-17%Ni-0.1%P alloy specimens were irradiated with 28 MeV electrons to a dose of 6.0×1022 e/m2 at 77 K, and positron annihilation lifetime measurements were carried out to obtain the isochronal annealing behavior of radiation-induced defects above room temperature. A three-component analysis of lifetime spectra showed that a decrease in the second-component intensity I2 occurred at about 373 K and 550 K, which is considered to be due to the disappearance of monovacancies by two different processes, namely, recombination with migrating self-interstitial atoms (373 K) and long-range migration of monovacancies to sinks (550 K). This latter stage is about 80K higher than the corresponding stage in Fe-13%Cr-14%Ni alloy specimen, which must be due to a vacancy-phosphorus interaction. The third component (microvoid component) intensity has a peak at about 373 K and disappears below 500 K.

Original languageEnglish
Pages (from-to)769-773
Number of pages5
JournalTransactions of the Japan Institute of Metals
Volume29
Issue number10
DOIs
Publication statusPublished - Jan 1 1988

Fingerprint

Positron annihilation
positron annihilation
life (durability)
Electrons
Phosphorus
Vacancies
electrons
Annealing
Radiation
Atoms
Defects
sinks
phosphorus
interstitials
dosage
Temperature
annealing
defects
room temperature
radiation

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Positron annihilation lifetime measurement of electron irradiated Fe-Cr-Ni-P alloy. / Watanabe, Hideo; Kuramoto, Eiichi; Yoshida, Naoaki.

In: Transactions of the Japan Institute of Metals, Vol. 29, No. 10, 01.01.1988, p. 769-773.

Research output: Contribution to journalArticle

@article{7290918d4fd547dd9ede6291fceac703,
title = "Positron annihilation lifetime measurement of electron irradiated Fe-Cr-Ni-P alloy",
abstract = "Fe-16{\%}Cr-17{\%}Ni-0.1{\%}P alloy specimens were irradiated with 28 MeV electrons to a dose of 6.0×1022 e/m2 at 77 K, and positron annihilation lifetime measurements were carried out to obtain the isochronal annealing behavior of radiation-induced defects above room temperature. A three-component analysis of lifetime spectra showed that a decrease in the second-component intensity I2 occurred at about 373 K and 550 K, which is considered to be due to the disappearance of monovacancies by two different processes, namely, recombination with migrating self-interstitial atoms (373 K) and long-range migration of monovacancies to sinks (550 K). This latter stage is about 80K higher than the corresponding stage in Fe-13{\%}Cr-14{\%}Ni alloy specimen, which must be due to a vacancy-phosphorus interaction. The third component (microvoid component) intensity has a peak at about 373 K and disappears below 500 K.",
author = "Hideo Watanabe and Eiichi Kuramoto and Naoaki Yoshida",
year = "1988",
month = "1",
day = "1",
doi = "10.2320/matertrans1960.29.769",
language = "English",
volume = "29",
pages = "769--773",
journal = "Materials Transactions",
issn = "0916-1821",
publisher = "The Japan Institute of Metals and Materials",
number = "10",

}

TY - JOUR

T1 - Positron annihilation lifetime measurement of electron irradiated Fe-Cr-Ni-P alloy

AU - Watanabe, Hideo

AU - Kuramoto, Eiichi

AU - Yoshida, Naoaki

PY - 1988/1/1

Y1 - 1988/1/1

N2 - Fe-16%Cr-17%Ni-0.1%P alloy specimens were irradiated with 28 MeV electrons to a dose of 6.0×1022 e/m2 at 77 K, and positron annihilation lifetime measurements were carried out to obtain the isochronal annealing behavior of radiation-induced defects above room temperature. A three-component analysis of lifetime spectra showed that a decrease in the second-component intensity I2 occurred at about 373 K and 550 K, which is considered to be due to the disappearance of monovacancies by two different processes, namely, recombination with migrating self-interstitial atoms (373 K) and long-range migration of monovacancies to sinks (550 K). This latter stage is about 80K higher than the corresponding stage in Fe-13%Cr-14%Ni alloy specimen, which must be due to a vacancy-phosphorus interaction. The third component (microvoid component) intensity has a peak at about 373 K and disappears below 500 K.

AB - Fe-16%Cr-17%Ni-0.1%P alloy specimens were irradiated with 28 MeV electrons to a dose of 6.0×1022 e/m2 at 77 K, and positron annihilation lifetime measurements were carried out to obtain the isochronal annealing behavior of radiation-induced defects above room temperature. A three-component analysis of lifetime spectra showed that a decrease in the second-component intensity I2 occurred at about 373 K and 550 K, which is considered to be due to the disappearance of monovacancies by two different processes, namely, recombination with migrating self-interstitial atoms (373 K) and long-range migration of monovacancies to sinks (550 K). This latter stage is about 80K higher than the corresponding stage in Fe-13%Cr-14%Ni alloy specimen, which must be due to a vacancy-phosphorus interaction. The third component (microvoid component) intensity has a peak at about 373 K and disappears below 500 K.

UR - http://www.scopus.com/inward/record.url?scp=0024090890&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024090890&partnerID=8YFLogxK

U2 - 10.2320/matertrans1960.29.769

DO - 10.2320/matertrans1960.29.769

M3 - Article

AN - SCOPUS:0024090890

VL - 29

SP - 769

EP - 773

JO - Materials Transactions

JF - Materials Transactions

SN - 0916-1821

IS - 10

ER -