Vacancy clusters in ultrafine grained Al by severe plastic deformation

X. L. Wu; B. Li; E. Ma

doi:10.1063/1.2794416

Vacancy clusters in ultrafine grained Al by severe plastic deformation

X. L. Wu
, B. Li
, E. Ma

CAS - Institute of Mechanics
Johns Hopkins University

科研成果: 期刊稿件 › 文章 › 同行评审

43 引用（Scopus）

摘要

Bulk nanostructured metals are often formed via severe plastic deformation (SPD). The dislocations generated during SPD evolve into boundaries to decompose the grains. Vacancies are also produced in large numbers during SPD, but have received much less attention. Using transmission electron microscopy, here we demonstrate a high density of unusually large vacancy Frank loops in SPD-processed Al. They are shown to impede moving dislocations and should be a contributor to strength.

源语言	英语
文章编号	141908
期刊	Applied Physics Letters
卷	91
期	14
DOI	https://doi.org/10.1063/1.2794416
出版状态	已出版 - 2007
已对外发布	是

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AB - Bulk nanostructured metals are often formed via severe plastic deformation (SPD). The dislocations generated during SPD evolve into boundaries to decompose the grains. Vacancies are also produced in large numbers during SPD, but have received much less attention. Using transmission electron microscopy, here we demonstrate a high density of unusually large vacancy Frank loops in SPD-processed Al. They are shown to impede moving dislocations and should be a contributor to strength.

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Vacancy clusters in ultrafine grained Al by severe plastic deformation

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