Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy

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Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy. / Balbus, Glenn H.; Kappacher, Johann; Sprouster, David J. et al.
In: Acta Materialia, Vol. 215.2021, No. 15 August, 116973, 15.08.2021.

Research output: Contribution to journalArticleResearchpeer-review

Harvard

Balbus, GH, Kappacher, J, Sprouster, DJ, Wang, F, Shin, J, Eggeler, YM, Rupert, TJ, Trelewicz, JR, Kiener, D, Maier-Kiener, V & Gianola, DS 2021, 'Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy', Acta Materialia, vol. 215.2021, no. 15 August, 116973. https://doi.org/10.1016/j.actamat.2021.116973

APA

Balbus, G. H., Kappacher, J., Sprouster, D. J., Wang, F., Shin, J., Eggeler, Y. M., Rupert, T. J., Trelewicz, J. R., Kiener, D., Maier-Kiener, V., & Gianola, D. S. (2021). Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy. Acta Materialia, 215.2021(15 August), Article 116973. https://doi.org/10.1016/j.actamat.2021.116973

Vancouver

Balbus GH, Kappacher J, Sprouster DJ, Wang F, Shin J, Eggeler YM et al. Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy. Acta Materialia. 2021 Aug 15;215.2021(15 August):116973. Epub 2021 May 8. doi: 10.1016/j.actamat.2021.116973

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@article{b0627fb81f5b4f0299aea5a745f0c5af,
title = "Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy",
abstract = "Lightweighting of structural materials has proven indispensable in the energy economy, predicated on alloy design with high strength-to-weight ratios. Modern aluminum alloys have made great strides in ambient temperature performance and are amenable to advanced manufacturing routes such as additive manufacturing, but lack elevated temperature robustness where gains in efficiency can be obtained. Here, we demonstrate the intentional design of disorder at interfaces, a notion generally associated with thermal runaway in traditional materials, in a segregation-engineered ternary nanocrystalline Al–Ni–Ce alloy that exhibits exceptional thermal stability and elevated temperature strength. In-situ transmission electron microscopy in concert with ultrafast calorimetry and X-ray total scattering point to synergistic co-segregation of Ce and Ni driving the evolution of amorphous intergranular films separating sub- 10 nm Al-rich grains, which gives rise to emergent thermal stability. We ascribe this intriguing behavior to near-equilibrium interface conditions followed by kinetically sluggish intermetallic precipitation in the confined disordered region. The resulting outstanding mechanical performance at high homologous temperatures lends credence to the efficacy of promoting disorder in alloy design and discovery.",
author = "Balbus, {Glenn H.} and Johann Kappacher and Sprouster, {David J.} and Fulin Wang and Jungho Shin and Eggeler, {Yolita M.} and Rupert, {Timothy J.} and Trelewicz, {Jason R.} and Daniel Kiener and Verena Maier-Kiener and Gianola, {Daniel S.}",
note = "Publisher Copyright: {\textcopyright} 2021 Acta Materialia Inc.",
year = "2021",
month = aug,
day = "15",
doi = "10.1016/j.actamat.2021.116973",
language = "English",
volume = "215.2021",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier",
number = "15 August",

}

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TY - JOUR

T1 - Disordered interfaces enable high temperature thermal stability and strength in a nanocrystalline aluminum alloy

AU - Balbus, Glenn H.

AU - Kappacher, Johann

AU - Sprouster, David J.

AU - Wang, Fulin

AU - Shin, Jungho

AU - Eggeler, Yolita M.

AU - Rupert, Timothy J.

AU - Trelewicz, Jason R.

AU - Kiener, Daniel

AU - Maier-Kiener, Verena

AU - Gianola, Daniel S.

N1 - Publisher Copyright: © 2021 Acta Materialia Inc.

PY - 2021/8/15

Y1 - 2021/8/15

N2 - Lightweighting of structural materials has proven indispensable in the energy economy, predicated on alloy design with high strength-to-weight ratios. Modern aluminum alloys have made great strides in ambient temperature performance and are amenable to advanced manufacturing routes such as additive manufacturing, but lack elevated temperature robustness where gains in efficiency can be obtained. Here, we demonstrate the intentional design of disorder at interfaces, a notion generally associated with thermal runaway in traditional materials, in a segregation-engineered ternary nanocrystalline Al–Ni–Ce alloy that exhibits exceptional thermal stability and elevated temperature strength. In-situ transmission electron microscopy in concert with ultrafast calorimetry and X-ray total scattering point to synergistic co-segregation of Ce and Ni driving the evolution of amorphous intergranular films separating sub- 10 nm Al-rich grains, which gives rise to emergent thermal stability. We ascribe this intriguing behavior to near-equilibrium interface conditions followed by kinetically sluggish intermetallic precipitation in the confined disordered region. The resulting outstanding mechanical performance at high homologous temperatures lends credence to the efficacy of promoting disorder in alloy design and discovery.

AB - Lightweighting of structural materials has proven indispensable in the energy economy, predicated on alloy design with high strength-to-weight ratios. Modern aluminum alloys have made great strides in ambient temperature performance and are amenable to advanced manufacturing routes such as additive manufacturing, but lack elevated temperature robustness where gains in efficiency can be obtained. Here, we demonstrate the intentional design of disorder at interfaces, a notion generally associated with thermal runaway in traditional materials, in a segregation-engineered ternary nanocrystalline Al–Ni–Ce alloy that exhibits exceptional thermal stability and elevated temperature strength. In-situ transmission electron microscopy in concert with ultrafast calorimetry and X-ray total scattering point to synergistic co-segregation of Ce and Ni driving the evolution of amorphous intergranular films separating sub- 10 nm Al-rich grains, which gives rise to emergent thermal stability. We ascribe this intriguing behavior to near-equilibrium interface conditions followed by kinetically sluggish intermetallic precipitation in the confined disordered region. The resulting outstanding mechanical performance at high homologous temperatures lends credence to the efficacy of promoting disorder in alloy design and discovery.

U2 - 10.1016/j.actamat.2021.116973

DO - 10.1016/j.actamat.2021.116973

M3 - Article

VL - 215.2021

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

IS - 15 August

M1 - 116973

ER -