Strain hardening and large tensile elongation in ultrahigh-strength nano-twinned copper

E. Ma; Y. M. Wang; Q. H. Lu; M. L. Sui; L. Lu; K. Lu

doi:10.1063/1.1814431

Strain hardening and large tensile elongation in ultrahigh-strength nano-twinned copper

E. Ma
, Y. M. Wang
, Q. H. Lu
, M. L. Sui
, L. Lu
, K. Lu

Johns Hopkins University
Chem./Materials Science Directorate
CAS - Institute of Metal Research

科研成果: 期刊稿件 › 文章 › 同行评审

342 引用（Scopus）

摘要

A high density of growth twins in pure Cu imparts high yield strength while preserving the capacity for efficient dislocation storage, leading to high strain hardening rates at high flow stresses, especially at 77 K. Uniform tensile deformation is stabilized to large plastic strains, resulting in an ultrahigh tensile strength of ~1 GPa together with an elongation to failure of ~30%.

源语言	英语
页（从-至）	4932-4934
页数	3
期刊	Applied Physics Letters
卷	85
期	21
DOI	https://doi.org/10.1063/1.1814431
出版状态	已出版 - 11月 2004
已对外发布	是

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abstract = "A high density of growth twins in pure Cu imparts high yield strength while preserving the capacity for efficient dislocation storage, leading to high strain hardening rates at high flow stresses, especially at 77 K. Uniform tensile deformation is stabilized to large plastic strains, resulting in an ultrahigh tensile strength of \textasciitilde{}1 GPa together with an elongation to failure of \textasciitilde{}30\%.",

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AU - Lu, L.

AU - Lu, K.

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AB - A high density of growth twins in pure Cu imparts high yield strength while preserving the capacity for efficient dislocation storage, leading to high strain hardening rates at high flow stresses, especially at 77 K. Uniform tensile deformation is stabilized to large plastic strains, resulting in an ultrahigh tensile strength of ~1 GPa together with an elongation to failure of ~30%.

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Strain hardening and large tensile elongation in ultrahigh-strength nano-twinned copper

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