Strong and ductile nanostructured Cu-carbon nanotube composite

Hongqi Li; Amit Misra; Zenji Horita; Carl C. Koch; Nathan A. Mara; Patricia O. Dickerson; Yuntian Zhu

doi:10.1063/1.3211921

Strong and ductile nanostructured Cu-carbon nanotube composite

Hongqi Li, Amit Misra, Zenji Horita, Carl C. Koch, Nathan A. Mara, Patricia O. Dickerson, Yuntian Zhu

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

81 Citations (Scopus)

Abstract

Nanocrystalline carbon nanotube (CNT)-reinforced Cu composite (grain size <25 nm) with high strength and good ductility was developed. Pillar testing reveals that its strength and plastic strain could be as large as 1700 MPa and 29%, respectively. Compared with its counterpart made under the same condition, an addition of 1 wt % CNTs leads to a dramatic increase in strength, stiffness and toughness without a sacrifice in ductility. Microstructural analysis discloses that in the Cu matrix, CNTs could be distributed either at grain boundaries or inside grains and could inhibit dislocation nucleation and motion, resulting in an increase in the strength.

Original language	English
Article number	071907
Journal	Applied Physics Letters
Volume	95
Issue number	7
DOIs	https://doi.org/10.1063/1.3211921
Publication status	Published - 2009

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3211921

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title = "Strong and ductile nanostructured Cu-carbon nanotube composite",

abstract = "Nanocrystalline carbon nanotube (CNT)-reinforced Cu composite (grain size <25 nm) with high strength and good ductility was developed. Pillar testing reveals that its strength and plastic strain could be as large as 1700 MPa and 29%, respectively. Compared with its counterpart made under the same condition, an addition of 1 wt % CNTs leads to a dramatic increase in strength, stiffness and toughness without a sacrifice in ductility. Microstructural analysis discloses that in the Cu matrix, CNTs could be distributed either at grain boundaries or inside grains and could inhibit dislocation nucleation and motion, resulting in an increase in the strength.",

author = "Hongqi Li and Amit Misra and Zenji Horita and Koch, {Carl C.} and Mara, {Nathan A.} and Dickerson, {Patricia O.} and Yuntian Zhu",

note = "Funding Information: This study was supported by the DOE, Office of Science, Office of Basic Energy Sciences. ZH appreciates the support of Kyushu University P&P program. The authors gratefully acknowledge John Kennison for his assistance in performing powder compaction.",

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doi = "10.1063/1.3211921",

language = "English",

volume = "95",

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T1 - Strong and ductile nanostructured Cu-carbon nanotube composite

AU - Li, Hongqi

AU - Misra, Amit

AU - Horita, Zenji

AU - Koch, Carl C.

AU - Mara, Nathan A.

AU - Dickerson, Patricia O.

AU - Zhu, Yuntian

N1 - Funding Information: This study was supported by the DOE, Office of Science, Office of Basic Energy Sciences. ZH appreciates the support of Kyushu University P&P program. The authors gratefully acknowledge John Kennison for his assistance in performing powder compaction.

PY - 2009

Y1 - 2009

N2 - Nanocrystalline carbon nanotube (CNT)-reinforced Cu composite (grain size <25 nm) with high strength and good ductility was developed. Pillar testing reveals that its strength and plastic strain could be as large as 1700 MPa and 29%, respectively. Compared with its counterpart made under the same condition, an addition of 1 wt % CNTs leads to a dramatic increase in strength, stiffness and toughness without a sacrifice in ductility. Microstructural analysis discloses that in the Cu matrix, CNTs could be distributed either at grain boundaries or inside grains and could inhibit dislocation nucleation and motion, resulting in an increase in the strength.

AB - Nanocrystalline carbon nanotube (CNT)-reinforced Cu composite (grain size <25 nm) with high strength and good ductility was developed. Pillar testing reveals that its strength and plastic strain could be as large as 1700 MPa and 29%, respectively. Compared with its counterpart made under the same condition, an addition of 1 wt % CNTs leads to a dramatic increase in strength, stiffness and toughness without a sacrifice in ductility. Microstructural analysis discloses that in the Cu matrix, CNTs could be distributed either at grain boundaries or inside grains and could inhibit dislocation nucleation and motion, resulting in an increase in the strength.

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Strong and ductile nanostructured Cu-carbon nanotube composite

Abstract

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