Hybrid nanostructured aluminum alloy with super-high strength

Zhi Wang; Rui T. Qu; Sergio Scudino; Bao A. Sun; Konda G. Prashanth; Dmitri V. Louzguine-Luzgin; Ming W. Chen; Zhe F. Zhang; J'rgen Eckert

doi:10.1038/am.2015.129

Hybrid nanostructured aluminum alloy with super-high strength

Zhi Wang, Rui T. Qu, Sergio Scudino, Bao A. Sun, Konda G. Prashanth, Dmitri V. Louzguine-Luzgin, Ming W. Chen, Zhe F. Zhang, J'rgen Eckert

Advanced Institute for Materials Research (AIMR)

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

88 Citations (Scopus)

Abstract

Methods to strengthen aluminum alloys have been employed since the discovery of the age-hardening phenomenon in 1901. The upper strength limit of bulk Al alloys is - 0.7 GPa by conventional precipitation strengthening and increases to > GPa through grain refinement and amorphization. Here we report a bulk hybrid nanostructured Al alloy with high strength at both room temperature and elevated temperatures. In addition, based on high-resolution transmission electron microscopic observations and theoretical analysis, we attribute the strengthening mechanism to the composite effect of the high-strength nanocrystalline fcc-Al and nano-sized intermetallics as well as to the confinement effect between these nano phases. We also report the plastic deformation of nano-sized intermetallics and the occurrence of a high density of stacking faults and twins in fcc-Al after low-strain-rate deformation at room and high temperatures. Our findings may be beneficial for designing highstrength materials for advanced structural applications.

Original language	English
Article number	e229
Journal	NPG Asia Materials
Volume	7
Issue number	12
DOIs	https://doi.org/10.1038/am.2015.129
Publication status	Published - 2015 Dec 18

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10.1038/am.2015.129

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title = "Hybrid nanostructured aluminum alloy with super-high strength",

abstract = "Methods to strengthen aluminum alloys have been employed since the discovery of the age-hardening phenomenon in 1901. The upper strength limit of bulk Al alloys is - 0.7 GPa by conventional precipitation strengthening and increases to > GPa through grain refinement and amorphization. Here we report a bulk hybrid nanostructured Al alloy with high strength at both room temperature and elevated temperatures. In addition, based on high-resolution transmission electron microscopic observations and theoretical analysis, we attribute the strengthening mechanism to the composite effect of the high-strength nanocrystalline fcc-Al and nano-sized intermetallics as well as to the confinement effect between these nano phases. We also report the plastic deformation of nano-sized intermetallics and the occurrence of a high density of stacking faults and twins in fcc-Al after low-strain-rate deformation at room and high temperatures. Our findings may be beneficial for designing highstrength materials for advanced structural applications.",

author = "Zhi Wang and Qu, {Rui T.} and Sergio Scudino and Sun, {Bao A.} and Prashanth, {Konda G.} and Louzguine-Luzgin, {Dmitri V.} and Chen, {Ming W.} and Zhang, {Zhe F.} and J'rgen Eckert",

note = "Funding Information: We thank WH Wang, KB Surreddi, P Liu, P Zhang, ZQ Liu, WW Zhang, T Gemming and MS Khoshkhoo for help with experiments and analysis. JE acknowledges financial support by the German Science Foundation under the Leibniz Program (grant EC 111/26-1) and the ERC Advanced Grant INTELHYB (grant ERC-2013-ADG-340025). RTQ and ZFZ acknowledge financial support from the National Natural Science Foundation of China under grant nos. 51331007 and 51301174. This work was also partly supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan.",

year = "2015",

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day = "18",

doi = "10.1038/am.2015.129",

language = "English",

volume = "7",

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T1 - Hybrid nanostructured aluminum alloy with super-high strength

AU - Wang, Zhi

AU - Qu, Rui T.

AU - Scudino, Sergio

AU - Sun, Bao A.

AU - Prashanth, Konda G.

AU - Louzguine-Luzgin, Dmitri V.

AU - Chen, Ming W.

AU - Zhang, Zhe F.

AU - Eckert, J'rgen

N1 - Funding Information: We thank WH Wang, KB Surreddi, P Liu, P Zhang, ZQ Liu, WW Zhang, T Gemming and MS Khoshkhoo for help with experiments and analysis. JE acknowledges financial support by the German Science Foundation under the Leibniz Program (grant EC 111/26-1) and the ERC Advanced Grant INTELHYB (grant ERC-2013-ADG-340025). RTQ and ZFZ acknowledge financial support from the National Natural Science Foundation of China under grant nos. 51331007 and 51301174. This work was also partly supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan.

PY - 2015/12/18

Y1 - 2015/12/18

N2 - Methods to strengthen aluminum alloys have been employed since the discovery of the age-hardening phenomenon in 1901. The upper strength limit of bulk Al alloys is - 0.7 GPa by conventional precipitation strengthening and increases to > GPa through grain refinement and amorphization. Here we report a bulk hybrid nanostructured Al alloy with high strength at both room temperature and elevated temperatures. In addition, based on high-resolution transmission electron microscopic observations and theoretical analysis, we attribute the strengthening mechanism to the composite effect of the high-strength nanocrystalline fcc-Al and nano-sized intermetallics as well as to the confinement effect between these nano phases. We also report the plastic deformation of nano-sized intermetallics and the occurrence of a high density of stacking faults and twins in fcc-Al after low-strain-rate deformation at room and high temperatures. Our findings may be beneficial for designing highstrength materials for advanced structural applications.

AB - Methods to strengthen aluminum alloys have been employed since the discovery of the age-hardening phenomenon in 1901. The upper strength limit of bulk Al alloys is - 0.7 GPa by conventional precipitation strengthening and increases to > GPa through grain refinement and amorphization. Here we report a bulk hybrid nanostructured Al alloy with high strength at both room temperature and elevated temperatures. In addition, based on high-resolution transmission electron microscopic observations and theoretical analysis, we attribute the strengthening mechanism to the composite effect of the high-strength nanocrystalline fcc-Al and nano-sized intermetallics as well as to the confinement effect between these nano phases. We also report the plastic deformation of nano-sized intermetallics and the occurrence of a high density of stacking faults and twins in fcc-Al after low-strain-rate deformation at room and high temperatures. Our findings may be beneficial for designing highstrength materials for advanced structural applications.

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Hybrid nanostructured aluminum alloy with super-high strength

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