Annealing-induced shape recovery in thin film metallic glass

Alemu Tesfaye Negussie; Wahyu Diyatmika; J. P. Chu; Y. L. Shen; J. S.C. Jang; C. H. Hsueh

doi:10.1016/j.jallcom.2014.06.048

Annealing-induced shape recovery in thin film metallic glass

Alemu Tesfaye Negussie, Wahyu Diyatmika, J. P. Chu, Y. L. Shen, J. S.C. Jang, C. H. Hsueh

材料科學與工程研究所

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

8 引文斯高帕斯（Scopus）

摘要

The shape recovery property of a sputtered Zr_50.3Cu _28.1Al₁₄Ni_7.6 (in at.%) thin film metallic glass upon heating is examined. Due to the surface tension-driven viscous flow, the shape of indentation appears to recover to different extents at various temperatures and holding times. It is found that a maximum of 59.8% indentation depth recovery is achieved after annealing within the supercooled liquid region (SCLR). The amount of free volume in the film is found to play a role in the recovery. Atomic force microscopy results reveal a decrease in film roughness to a minimum value within SCLR. To elucidate the experimentally observed shape recovery, a numerical modeling has been employed. It is evident that the depressed region caused by indentation is elevated after annealing.

原文	???core.languages.en_GB???
頁（從 - 到）	157-163
頁數	7
期刊	Journal of Alloys and Compounds
卷	613
DOIs	https://doi.org/10.1016/j.jallcom.2014.06.048
出版狀態	已出版 - 15 11月 2014

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10.1016/j.jallcom.2014.06.048

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title = "Annealing-induced shape recovery in thin film metallic glass",

abstract = "The shape recovery property of a sputtered Zr50.3Cu 28.1Al14Ni7.6 (in at.%) thin film metallic glass upon heating is examined. Due to the surface tension-driven viscous flow, the shape of indentation appears to recover to different extents at various temperatures and holding times. It is found that a maximum of 59.8% indentation depth recovery is achieved after annealing within the supercooled liquid region (SCLR). The amount of free volume in the film is found to play a role in the recovery. Atomic force microscopy results reveal a decrease in film roughness to a minimum value within SCLR. To elucidate the experimentally observed shape recovery, a numerical modeling has been employed. It is evident that the depressed region caused by indentation is elevated after annealing.",

keywords = "Annealing, Indentation depth recovery, Roughness, Thin film metallic glass",

author = "Negussie, {Alemu Tesfaye} and Wahyu Diyatmika and Chu, {J. P.} and Shen, {Y. L.} and Jang, {J. S.C.} and Hsueh, {C. H.}",

note = "Funding Information: This work is supported by Ministry of Science and Technology ( MOST ) of Republic of China, Taiwan under NSC 101-2221-E-011-048-MY3 . Authors gratefully acknowledge Mr. C.L. Li and Mr. C.H. Chang for their kind assistance in nanoindentation and XRD work.",

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AU - Negussie, Alemu Tesfaye

AU - Diyatmika, Wahyu

AU - Chu, J. P.

AU - Shen, Y. L.

AU - Jang, J. S.C.

AU - Hsueh, C. H.

N1 - Funding Information: This work is supported by Ministry of Science and Technology ( MOST ) of Republic of China, Taiwan under NSC 101-2221-E-011-048-MY3 . Authors gratefully acknowledge Mr. C.L. Li and Mr. C.H. Chang for their kind assistance in nanoindentation and XRD work.

PY - 2014/11/15

Y1 - 2014/11/15

N2 - The shape recovery property of a sputtered Zr50.3Cu 28.1Al14Ni7.6 (in at.%) thin film metallic glass upon heating is examined. Due to the surface tension-driven viscous flow, the shape of indentation appears to recover to different extents at various temperatures and holding times. It is found that a maximum of 59.8% indentation depth recovery is achieved after annealing within the supercooled liquid region (SCLR). The amount of free volume in the film is found to play a role in the recovery. Atomic force microscopy results reveal a decrease in film roughness to a minimum value within SCLR. To elucidate the experimentally observed shape recovery, a numerical modeling has been employed. It is evident that the depressed region caused by indentation is elevated after annealing.

AB - The shape recovery property of a sputtered Zr50.3Cu 28.1Al14Ni7.6 (in at.%) thin film metallic glass upon heating is examined. Due to the surface tension-driven viscous flow, the shape of indentation appears to recover to different extents at various temperatures and holding times. It is found that a maximum of 59.8% indentation depth recovery is achieved after annealing within the supercooled liquid region (SCLR). The amount of free volume in the film is found to play a role in the recovery. Atomic force microscopy results reveal a decrease in film roughness to a minimum value within SCLR. To elucidate the experimentally observed shape recovery, a numerical modeling has been employed. It is evident that the depressed region caused by indentation is elevated after annealing.

KW - Annealing

KW - Indentation depth recovery

KW - Roughness

KW - Thin film metallic glass

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VL - 613

SP - 157

EP - 163

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Annealing-induced shape recovery in thin film metallic glass

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