Influence of slip and twinning on the crystallographic stability of bimetal interfaces in nanocomposites under deformation

I. J. Beyerlein; J. R. Mayeur; R. J. McCabe; S. J. Zheng; J. S. Carpenter; N. A. Mara

doi:10.1016/j.actamat.2014.03.041

Influence of slip and twinning on the crystallographic stability of bimetal interfaces in nanocomposites under deformation

I. J. Beyerlein, J. R. Mayeur, R. J. McCabe, S. J. Zheng, J. S. Carpenter, N. A. Mara

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

42 Scopus citations

Abstract

In this work, we examine the microstructural development of a bimetal multilayered composite over a broad range of individual layer thicknesses h from microns to nanometers during deformation. We observe two microstructural transitions, one at the submicron scale and another at the nanoscale. Remarkably, each transition is associated with the development of a preferred interface character. We show that the characteristics of these prevailing interfaces are strongly influenced by whether the adjoining crystals are deforming by slip only or by slip and twinning. We present a generalized theory that suggests that, in spite of their different origins, the crystallographic stability of their interface character with respect to deformation depends on the same few basic variables.

Original language	English
Pages (from-to)	137-147
Number of pages	11
Journal	Acta Materialia
Volume	72
DOIs	https://doi.org/10.1016/j.actamat.2014.03.041
State	Published - Jun 15 2014
Externally published	Yes

Funding

The authors gratefully acknowledge support by the Center for Materials at Irradiation and Mechanical Extremes , an Energy Frontier Research Center funded by the US Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number 2008LANL1026. R.J.M. and J.S.C. acknowledge support by a Laboratory Directed Research and Development (LDRD) program 20140348ER.

Funders	Funder number
Office of Basic Energy Sciences	2008LANL1026
US Department of Energy
Office of Science
Laboratory Directed Research and Development	20140348ER

Keywords

Crystal plasticity
Interfaces
Nanocomposites
Severe plastic deformation
Twinning

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10.1016/j.actamat.2014.03.041

Cite this

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abstract = "In this work, we examine the microstructural development of a bimetal multilayered composite over a broad range of individual layer thicknesses h from microns to nanometers during deformation. We observe two microstructural transitions, one at the submicron scale and another at the nanoscale. Remarkably, each transition is associated with the development of a preferred interface character. We show that the characteristics of these prevailing interfaces are strongly influenced by whether the adjoining crystals are deforming by slip only or by slip and twinning. We present a generalized theory that suggests that, in spite of their different origins, the crystallographic stability of their interface character with respect to deformation depends on the same few basic variables.",

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AU - Beyerlein, I. J.

AU - Mayeur, J. R.

AU - McCabe, R. J.

AU - Zheng, S. J.

AU - Carpenter, J. S.

AU - Mara, N. A.

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AB - In this work, we examine the microstructural development of a bimetal multilayered composite over a broad range of individual layer thicknesses h from microns to nanometers during deformation. We observe two microstructural transitions, one at the submicron scale and another at the nanoscale. Remarkably, each transition is associated with the development of a preferred interface character. We show that the characteristics of these prevailing interfaces are strongly influenced by whether the adjoining crystals are deforming by slip only or by slip and twinning. We present a generalized theory that suggests that, in spite of their different origins, the crystallographic stability of their interface character with respect to deformation depends on the same few basic variables.

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KW - Interfaces

KW - Nanocomposites

KW - Severe plastic deformation

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Influence of slip and twinning on the crystallographic stability of bimetal interfaces in nanocomposites under deformation

Abstract

Funding

Keywords

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