Formation of precipitates in an ordering alloy and their dissolution under irradiation

Syo Matsumura, Y. Tanaka, S. Müller, C. Abromeit

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The formation process of precipitates in an ordering alloy and their dissolution under irradiation have been studied by solving coupled kinetic equations for local composition X(r, t) and local degree of order S(r, t) in a two-dimensional continuous medium. Spherical precipitates of an ordered (or disordered) phase are formed in a disordered (or ordered) matrix during isothermal annealing of a quenched homogeneous state. Two-dimensional snap-shots of the processes clearly demonstrate that heterogeneous fluctuations of S induce compositional modulation, leading to nucleation of the precipitates. Irradiation with energetic particles makes the precipitates unstable and dissolves them into the matrix. It is suggested that the life time of precipitates under irradiation would be elongated with increase of volume fraction of the ordered phase. The coupling of local fluctuations in X and S plays an important role also in the dissolution process under irradiation.

Original languageEnglish
Pages (from-to)42-49
Number of pages8
JournalJournal of Nuclear Materials
Volume239
Issue number1-3
DOIs
Publication statusPublished - Dec 1 1996

Fingerprint

Precipitates
precipitates
dissolving
Dissolution
Irradiation
irradiation
Isothermal annealing
energetic particles
matrices
kinetic equations
shot
Volume fraction
Nucleation
Modulation
nucleation
modulation
life (durability)
Kinetics
annealing
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Materials Science(all)

Cite this

Formation of precipitates in an ordering alloy and their dissolution under irradiation. / Matsumura, Syo; Tanaka, Y.; Müller, S.; Abromeit, C.

In: Journal of Nuclear Materials, Vol. 239, No. 1-3, 01.12.1996, p. 42-49.

Research output: Contribution to journalArticle

Matsumura, Syo ; Tanaka, Y. ; Müller, S. ; Abromeit, C. / Formation of precipitates in an ordering alloy and their dissolution under irradiation. In: Journal of Nuclear Materials. 1996 ; Vol. 239, No. 1-3. pp. 42-49.
@article{86844217ee8e4eb2a4204ab173b69eb8,
title = "Formation of precipitates in an ordering alloy and their dissolution under irradiation",
abstract = "The formation process of precipitates in an ordering alloy and their dissolution under irradiation have been studied by solving coupled kinetic equations for local composition X(r, t) and local degree of order S(r, t) in a two-dimensional continuous medium. Spherical precipitates of an ordered (or disordered) phase are formed in a disordered (or ordered) matrix during isothermal annealing of a quenched homogeneous state. Two-dimensional snap-shots of the processes clearly demonstrate that heterogeneous fluctuations of S induce compositional modulation, leading to nucleation of the precipitates. Irradiation with energetic particles makes the precipitates unstable and dissolves them into the matrix. It is suggested that the life time of precipitates under irradiation would be elongated with increase of volume fraction of the ordered phase. The coupling of local fluctuations in X and S plays an important role also in the dissolution process under irradiation.",
author = "Syo Matsumura and Y. Tanaka and S. M{\"u}ller and C. Abromeit",
year = "1996",
month = "12",
day = "1",
doi = "10.1016/S0022-3115(96)00431-X",
language = "English",
volume = "239",
pages = "42--49",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - Formation of precipitates in an ordering alloy and their dissolution under irradiation

AU - Matsumura, Syo

AU - Tanaka, Y.

AU - Müller, S.

AU - Abromeit, C.

PY - 1996/12/1

Y1 - 1996/12/1

N2 - The formation process of precipitates in an ordering alloy and their dissolution under irradiation have been studied by solving coupled kinetic equations for local composition X(r, t) and local degree of order S(r, t) in a two-dimensional continuous medium. Spherical precipitates of an ordered (or disordered) phase are formed in a disordered (or ordered) matrix during isothermal annealing of a quenched homogeneous state. Two-dimensional snap-shots of the processes clearly demonstrate that heterogeneous fluctuations of S induce compositional modulation, leading to nucleation of the precipitates. Irradiation with energetic particles makes the precipitates unstable and dissolves them into the matrix. It is suggested that the life time of precipitates under irradiation would be elongated with increase of volume fraction of the ordered phase. The coupling of local fluctuations in X and S plays an important role also in the dissolution process under irradiation.

AB - The formation process of precipitates in an ordering alloy and their dissolution under irradiation have been studied by solving coupled kinetic equations for local composition X(r, t) and local degree of order S(r, t) in a two-dimensional continuous medium. Spherical precipitates of an ordered (or disordered) phase are formed in a disordered (or ordered) matrix during isothermal annealing of a quenched homogeneous state. Two-dimensional snap-shots of the processes clearly demonstrate that heterogeneous fluctuations of S induce compositional modulation, leading to nucleation of the precipitates. Irradiation with energetic particles makes the precipitates unstable and dissolves them into the matrix. It is suggested that the life time of precipitates under irradiation would be elongated with increase of volume fraction of the ordered phase. The coupling of local fluctuations in X and S plays an important role also in the dissolution process under irradiation.

UR - http://www.scopus.com/inward/record.url?scp=0030412387&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030412387&partnerID=8YFLogxK

U2 - 10.1016/S0022-3115(96)00431-X

DO - 10.1016/S0022-3115(96)00431-X

M3 - Article

VL - 239

SP - 42

EP - 49

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

SN - 0022-3115

IS - 1-3

ER -