Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy

Zenji Horita; David J. Smith; Minoru Nemoto; Ruslan Z. Valiev; Terence G. Langdon

doi:10.1557/JMR.1998.0057

Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy

Zenji Horita, David J. Smith, Minoru Nemoto, Ruslan Z. Valiev, Terence G. Langdon

Materials Processing

Research output: Contribution to journal › Article › peer-review

154 Citations (Scopus)

Abstract

Submicrometer-grained (SMG) structures were produced in Cu and Ni using an intense plastic straining technique, and the grain boundaries and their vicinities were observed by high-resolution electron microscopy. The grain boundaries exhibited zigzag configurations with irregular arrangements of facets and steps, and thus they were found to be in a high-energy nonequilibrium state. A similar conclusion was reached earlier for SMG Al-Mg solid solution alloys which have much lower melting points than Cu and Ni, suggesting that nonequilibrium grain boundaries are a typical feature of metals processed by intense plastic straining.

Original language	English
Pages (from-to)	446-450
Number of pages	5
Journal	Journal of Materials Research
Volume	13
Issue number	2
DOIs	https://doi.org/10.1557/JMR.1998.0057
Publication status	Published - Feb 1998

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{7848306e67964dfc9a54f4115c0bee4a,

title = "Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy",

abstract = "Submicrometer-grained (SMG) structures were produced in Cu and Ni using an intense plastic straining technique, and the grain boundaries and their vicinities were observed by high-resolution electron microscopy. The grain boundaries exhibited zigzag configurations with irregular arrangements of facets and steps, and thus they were found to be in a high-energy nonequilibrium state. A similar conclusion was reached earlier for SMG Al-Mg solid solution alloys which have much lower melting points than Cu and Ni, suggesting that nonequilibrium grain boundaries are a typical feature of metals processed by intense plastic straining.",

author = "Zenji Horita and Smith, {David J.} and Minoru Nemoto and Valiev, {Ruslan Z.} and Langdon, {Terence G.}",

note = "Funding Information: This work was supported by the Light Metal Educational Foundation of Japan, a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan, the Russian Foundation for Basic Research, the National Science Foundation of the United States under Grants No. INT-9602919 and No. DMR-9625969, and by the United States Army Research Office under Grant No. N68171-96-6-9006. The Center for High Resolution Electron Microscopy at Arizona State University is supported by the National Science Foundation under Grant No. DMR-9314326.",

year = "1998",

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doi = "10.1557/JMR.1998.0057",

language = "English",

volume = "13",

pages = "446--450",

journal = "Journal of Materials Research",

issn = "0884-2914",

publisher = "Materials Research Society",

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T1 - Observations of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy

AU - Horita, Zenji

AU - Smith, David J.

AU - Nemoto, Minoru

AU - Valiev, Ruslan Z.

AU - Langdon, Terence G.

N1 - Funding Information: This work was supported by the Light Metal Educational Foundation of Japan, a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture of Japan, the Russian Foundation for Basic Research, the National Science Foundation of the United States under Grants No. INT-9602919 and No. DMR-9625969, and by the United States Army Research Office under Grant No. N68171-96-6-9006. The Center for High Resolution Electron Microscopy at Arizona State University is supported by the National Science Foundation under Grant No. DMR-9314326.

PY - 1998/2

Y1 - 1998/2

N2 - Submicrometer-grained (SMG) structures were produced in Cu and Ni using an intense plastic straining technique, and the grain boundaries and their vicinities were observed by high-resolution electron microscopy. The grain boundaries exhibited zigzag configurations with irregular arrangements of facets and steps, and thus they were found to be in a high-energy nonequilibrium state. A similar conclusion was reached earlier for SMG Al-Mg solid solution alloys which have much lower melting points than Cu and Ni, suggesting that nonequilibrium grain boundaries are a typical feature of metals processed by intense plastic straining.

AB - Submicrometer-grained (SMG) structures were produced in Cu and Ni using an intense plastic straining technique, and the grain boundaries and their vicinities were observed by high-resolution electron microscopy. The grain boundaries exhibited zigzag configurations with irregular arrangements of facets and steps, and thus they were found to be in a high-energy nonequilibrium state. A similar conclusion was reached earlier for SMG Al-Mg solid solution alloys which have much lower melting points than Cu and Ni, suggesting that nonequilibrium grain boundaries are a typical feature of metals processed by intense plastic straining.

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