Recovering compressive plasticity of bulk metallic glasses by high-temperature creep

Y. Tong; W. Dmowski; Y. Yokoyama; G. Wang; P. K. Liaw; T. Egami

doi:10.1016/j.scriptamat.2013.06.020

Recovering compressive plasticity of bulk metallic glasses by high-temperature creep

Y. Tong, W. Dmowski, Y. Yokoyama, G. Wang, P. K. Liaw, T. Egami

Institute for Materials Research (IMR)

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

39 Citations (Scopus)

Abstract

Most bulk metallic glasses fail mechanically in a brittle manner, without much plasticity. Annealing at a temperature below the glass transition temperature typically results in structural relaxation and even more enhanced brittleness. However, we report here that significant plasticity can be recovered if the sample is subjected to stress during annealing, resulting in thermomechanical creep. The structural analysis indicates that the high-temperature creep alleviates the effect of the structural relaxation and thus leads to structural rejuvenation and improved plasticity.

Original language	English
Pages (from-to)	570-573
Number of pages	4
Journal	Scripta Materialia
Volume	69
Issue number	8
DOIs	https://doi.org/10.1016/j.scriptamat.2013.06.020
Publication status	Published - 2013 Oct

Keywords

Bulk metallic glasses
Creep
Plasticity
X-ray diffraction

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2013.06.020

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abstract = "Most bulk metallic glasses fail mechanically in a brittle manner, without much plasticity. Annealing at a temperature below the glass transition temperature typically results in structural relaxation and even more enhanced brittleness. However, we report here that significant plasticity can be recovered if the sample is subjected to stress during annealing, resulting in thermomechanical creep. The structural analysis indicates that the high-temperature creep alleviates the effect of the structural relaxation and thus leads to structural rejuvenation and improved plasticity.",

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author = "Y. Tong and W. Dmowski and Y. Yokoyama and G. Wang and Liaw, {P. K.} and T. Egami",

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AU - Tong, Y.

AU - Dmowski, W.

AU - Yokoyama, Y.

AU - Wang, G.

AU - Liaw, P. K.

AU - Egami, T.

PY - 2013/10

Y1 - 2013/10

N2 - Most bulk metallic glasses fail mechanically in a brittle manner, without much plasticity. Annealing at a temperature below the glass transition temperature typically results in structural relaxation and even more enhanced brittleness. However, we report here that significant plasticity can be recovered if the sample is subjected to stress during annealing, resulting in thermomechanical creep. The structural analysis indicates that the high-temperature creep alleviates the effect of the structural relaxation and thus leads to structural rejuvenation and improved plasticity.

AB - Most bulk metallic glasses fail mechanically in a brittle manner, without much plasticity. Annealing at a temperature below the glass transition temperature typically results in structural relaxation and even more enhanced brittleness. However, we report here that significant plasticity can be recovered if the sample is subjected to stress during annealing, resulting in thermomechanical creep. The structural analysis indicates that the high-temperature creep alleviates the effect of the structural relaxation and thus leads to structural rejuvenation and improved plasticity.

KW - Bulk metallic glasses

KW - Creep

KW - Plasticity

KW - X-ray diffraction

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EP - 573

JO - Scripta Materialia

JF - Scripta Materialia

IS - 8

ER -

Recovering compressive plasticity of bulk metallic glasses by high-temperature creep

Abstract

Keywords

ASJC Scopus subject areas

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