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Title: Distinct driven steady states emerge from diverse initial textures in rolled nanocomposites

Abstract

Severe plastic deformation is a known method of making high-performance metallic materials. Single-phase polycrystalline metals undergoing severe plastic deformation develop steady-state textures that are characteristic of the mode of deformation. By contrast, we show that two-phase, Cu-Nb nano-laminate composites reach a variety of different steady-state textures under a single mode of deformation. Using molecular statics simulations and a novel algorithm for crystal rotation analysis, we observe that the final, steady state texture and interface character in these materials depends on the initial texture of the composite. This result suggests that the range of bulk Cu-Nb nano-composite textures that may be made by severe plastic deformation is larger than previously demonstrated, with multiple plastically-driven steady states accessible, depending on initial texture. We propose a modification of accumulative roll bonding with highly textured seed layers as a means of accessing different driven steady states in layered composites.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2]
  1. Carnegie Mellon Univ., Pittsburgh, PA (United States)
  2. Texas A & M Univ., College Station, TX (United States)
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
OSTI Identifier:
1630908
Alternate Identifier(s):
OSTI ID: 1577876
Grant/Contract Number:  
NA0003857; GFRP-1252522; DMR-1710186
Resource Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 183; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Nanocomposites; Interfaces; Severe plastic deformation; Rolling; Molecular dynamics

Citation Formats

Chesser, Ian, Holm, Elizabeth A., and Demkowicz, Michael J. Distinct driven steady states emerge from diverse initial textures in rolled nanocomposites. United States: N. p., 2019. Web. doi:10.1016/j.actamat.2019.10.058.
Chesser, Ian, Holm, Elizabeth A., & Demkowicz, Michael J. Distinct driven steady states emerge from diverse initial textures in rolled nanocomposites. United States. https://doi.org/10.1016/j.actamat.2019.10.058
Chesser, Ian, Holm, Elizabeth A., and Demkowicz, Michael J. Mon . "Distinct driven steady states emerge from diverse initial textures in rolled nanocomposites". United States. https://doi.org/10.1016/j.actamat.2019.10.058. https://www.osti.gov/servlets/purl/1630908.
@article{osti_1630908,
title = {Distinct driven steady states emerge from diverse initial textures in rolled nanocomposites},
author = {Chesser, Ian and Holm, Elizabeth A. and Demkowicz, Michael J.},
abstractNote = {Severe plastic deformation is a known method of making high-performance metallic materials. Single-phase polycrystalline metals undergoing severe plastic deformation develop steady-state textures that are characteristic of the mode of deformation. By contrast, we show that two-phase, Cu-Nb nano-laminate composites reach a variety of different steady-state textures under a single mode of deformation. Using molecular statics simulations and a novel algorithm for crystal rotation analysis, we observe that the final, steady state texture and interface character in these materials depends on the initial texture of the composite. This result suggests that the range of bulk Cu-Nb nano-composite textures that may be made by severe plastic deformation is larger than previously demonstrated, with multiple plastically-driven steady states accessible, depending on initial texture. We propose a modification of accumulative roll bonding with highly textured seed layers as a means of accessing different driven steady states in layered composites.},
doi = {10.1016/j.actamat.2019.10.058},
journal = {Acta Materialia},
number = C,
volume = 183,
place = {United States},
year = {Mon Nov 11 00:00:00 EST 2019},
month = {Mon Nov 11 00:00:00 EST 2019}
}

Journal Article:

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Cited by: 3 works
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