High-strength and thermally stable bulk nanolayered composites due to twin-induced interfaces

Shijian Zheng, Irene J. Beyerlein, John S. Carpenter, Keon Wook Kang, Jian Wang, Weizhong Han, Nathan A. Mara

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

Bulk nanostructured metals can attribute both exceptional strength and poor thermal stability to high interfacial content, making it a challenge to utilize them in high-temperature environments. Here we report that a bulk two-phase bimetal nanocomposite synthesised via severe plastic deformation uniquely possesses simultaneous high-strength and high thermal stability. For a bimetal spacing of 10 nm, this composite achieves an order of magnitude increase in hardness of 4.13 GPa over its constituents and maintains it (4.07 GPa), even after annealing at 500C for 1 h. It owes this extraordinary property to an atomically well-ordered bimaterial interface that results from twin-induced crystal reorientation, persists after extreme strains and prevails over the entire bulk. This discovery proves that interfaces can be designed within bulk nanostructured composites to radically outperform previously prepared bulk nanocrystalline materials, with respect to both mechanical and thermal stability.

Original languageEnglish
Article number1696
JournalNature communications
Volume4
DOIs
Publication statusPublished - 2013 May 20

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high strength
bimetals
Bimetals
Thermodynamic stability
thermal stability
Hot Temperature
composite materials
Composite materials
high temperature environments
Nanocrystalline materials
Nanocomposites
Mechanical stability
Hardness
Nanoparticles
Plastics
plastic deformation
retraining
Plastic deformation
nanocomposites
nanocrystals

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

Cite this

Zheng, Shijian ; Beyerlein, Irene J. ; Carpenter, John S. ; Kang, Keon Wook ; Wang, Jian ; Han, Weizhong ; Mara, Nathan A. / High-strength and thermally stable bulk nanolayered composites due to twin-induced interfaces. In: Nature communications. 2013 ; Vol. 4.
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High-strength and thermally stable bulk nanolayered composites due to twin-induced interfaces. / Zheng, Shijian; Beyerlein, Irene J.; Carpenter, John S.; Kang, Keon Wook; Wang, Jian; Han, Weizhong; Mara, Nathan A.

In: Nature communications, Vol. 4, 1696, 20.05.2013.

Research output: Contribution to journalArticle

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AU - Zheng, Shijian

AU - Beyerlein, Irene J.

AU - Carpenter, John S.

AU - Kang, Keon Wook

AU - Wang, Jian

AU - Han, Weizhong

AU - Mara, Nathan A.

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AB - Bulk nanostructured metals can attribute both exceptional strength and poor thermal stability to high interfacial content, making it a challenge to utilize them in high-temperature environments. Here we report that a bulk two-phase bimetal nanocomposite synthesised via severe plastic deformation uniquely possesses simultaneous high-strength and high thermal stability. For a bimetal spacing of 10 nm, this composite achieves an order of magnitude increase in hardness of 4.13 GPa over its constituents and maintains it (4.07 GPa), even after annealing at 500C for 1 h. It owes this extraordinary property to an atomically well-ordered bimaterial interface that results from twin-induced crystal reorientation, persists after extreme strains and prevails over the entire bulk. This discovery proves that interfaces can be designed within bulk nanostructured composites to radically outperform previously prepared bulk nanocrystalline materials, with respect to both mechanical and thermal stability.

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