Phase decomposition in a mechanically alloyed Cu-44.5 at% Ni-22.5 at% Fe alloy during isothermal aging

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A supersaturated solid solution of Cu-44.5 at%Ni-22.5 at%Fe alloy was produced by ball milling of a pure chemical elemental mixture for 1080ks. An fee supersaturated solid solution with a grain size of about 20 nm was obtained after milling. This alloy was subsequently aged at 803, 898 and 1003 K for different times. The growth kinetics of the modulation wavelength was determined from the X-ray diffraction results and followed the Lifshitz-Slyozov-Wagner theory for a diffusion-controlled coarsening in the MA alloy after aging. The growth kinetics of composition modulation wavelength for the MA alloy was faster at 803 and 898 K than that for the same alloy composition obtained by a conventional processing and then aged at the same temperatures. The activation energy for the decomposed phase coarsening process in the MA alloy was lower man that corresponding to me conventionally-processed alloy. © 2006 The Japan Institute of Metals.
Original languageAmerican English
Pages (from-to)1317-1321
Number of pages5
JournalMaterials Transactions
DOIs
StatePublished - 1 May 2006
Externally publishedYes

Fingerprint

Aging of materials
Decomposition
decomposition
Growth kinetics
Coarsening
Solid solutions
solid solutions
Modulation
modulation
Wavelength
kinetics
Ball milling
Chemical analysis
wavelengths
balls
Japan
Activation energy
grain size
Metals
activation energy

Cite this

@article{52f49105604244c89d4b485b5c7e5e2c,
title = "Phase decomposition in a mechanically alloyed Cu-44.5 at{\%} Ni-22.5 at{\%} Fe alloy during isothermal aging",
abstract = "A supersaturated solid solution of Cu-44.5 at{\%}Ni-22.5 at{\%}Fe alloy was produced by ball milling of a pure chemical elemental mixture for 1080ks. An fee supersaturated solid solution with a grain size of about 20 nm was obtained after milling. This alloy was subsequently aged at 803, 898 and 1003 K for different times. The growth kinetics of the modulation wavelength was determined from the X-ray diffraction results and followed the Lifshitz-Slyozov-Wagner theory for a diffusion-controlled coarsening in the MA alloy after aging. The growth kinetics of composition modulation wavelength for the MA alloy was faster at 803 and 898 K than that for the same alloy composition obtained by a conventional processing and then aged at the same temperatures. The activation energy for the decomposed phase coarsening process in the MA alloy was lower man that corresponding to me conventionally-processed alloy. {\circledC} 2006 The Japan Institute of Metals.",
author = "Lopez-Hirata, {Victor M.} and Saucedo-Mu{\~n}oz, {Maribel L.} and Diaz-Barriga-Arceo, {Lucia G.}",
year = "2006",
month = "5",
day = "1",
doi = "10.2320/matertrans.47.1317",
language = "American English",
pages = "1317--1321",
journal = "Materials Transactions",
issn = "1345-9678",
publisher = "Japan Institute of Metals (JIM)",

}

TY - JOUR

T1 - Phase decomposition in a mechanically alloyed Cu-44.5 at% Ni-22.5 at% Fe alloy during isothermal aging

AU - Lopez-Hirata, Victor M.

AU - Saucedo-Muñoz, Maribel L.

AU - Diaz-Barriga-Arceo, Lucia G.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - A supersaturated solid solution of Cu-44.5 at%Ni-22.5 at%Fe alloy was produced by ball milling of a pure chemical elemental mixture for 1080ks. An fee supersaturated solid solution with a grain size of about 20 nm was obtained after milling. This alloy was subsequently aged at 803, 898 and 1003 K for different times. The growth kinetics of the modulation wavelength was determined from the X-ray diffraction results and followed the Lifshitz-Slyozov-Wagner theory for a diffusion-controlled coarsening in the MA alloy after aging. The growth kinetics of composition modulation wavelength for the MA alloy was faster at 803 and 898 K than that for the same alloy composition obtained by a conventional processing and then aged at the same temperatures. The activation energy for the decomposed phase coarsening process in the MA alloy was lower man that corresponding to me conventionally-processed alloy. © 2006 The Japan Institute of Metals.

AB - A supersaturated solid solution of Cu-44.5 at%Ni-22.5 at%Fe alloy was produced by ball milling of a pure chemical elemental mixture for 1080ks. An fee supersaturated solid solution with a grain size of about 20 nm was obtained after milling. This alloy was subsequently aged at 803, 898 and 1003 K for different times. The growth kinetics of the modulation wavelength was determined from the X-ray diffraction results and followed the Lifshitz-Slyozov-Wagner theory for a diffusion-controlled coarsening in the MA alloy after aging. The growth kinetics of composition modulation wavelength for the MA alloy was faster at 803 and 898 K than that for the same alloy composition obtained by a conventional processing and then aged at the same temperatures. The activation energy for the decomposed phase coarsening process in the MA alloy was lower man that corresponding to me conventionally-processed alloy. © 2006 The Japan Institute of Metals.

U2 - 10.2320/matertrans.47.1317

DO - 10.2320/matertrans.47.1317

M3 - Article

SP - 1317

EP - 1321

JO - Materials Transactions

JF - Materials Transactions

SN - 1345-9678

ER -