Precipitation of Zr2Cu stable crystalline phase from Zr 70Cu27.5Rh2.5 amorphous alloy

David Cushman; Junji Saida; Chunfei Li

doi:10.1557/proc-979-0979-hh11-28

Precipitation of Zr₂Cu stable crystalline phase from Zr ₇₀Cu_27.5Rh_2.5 amorphous alloy

David Cushman, Junji Saida, Chunfei Li

FRIS - Planning Office

Portland State University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The crystallization process of Zr₇₀Cu_27.5Rh _2.5 metallic glass was studied with Transmission Electron Microscopy (TEM). In contrast to previous studies where the precipitation of metastable icosahedral quasicrystalline (IQC) particles is of the interest, we designed the present work to focus on the nucleation process of the stable Zr₂Cu crystalline phase. It has been found that the alloy consists of IQC particles distributed in amorphous matrix prior to the precipitation of the Zr ₂Cu stable crystalline phase and Zr₂Cu nucleates from the amorphous matrix. The encounter of the IQC phase with Zr₂Cu transforms the former into the latter so quickly that no interface between them was found in the present experiment. These insights provide the basis for a discussion of the stability of metallic glasses and the IQC particles.

Original language	English
Title of host publication	Thermodynamics and Kinetics of Phase Transformations in Inorganic Materials
Publisher	Materials Research Society
Pages	104-109
Number of pages	6
ISBN (Print)	9781604234282
DOIs	https://doi.org/10.1557/proc-979-0979-hh11-28
Publication status	Published - 2006
Event	2006 MRS Fall Meeting - Boston, MA, United States Duration: 2006 Nov 27 → 2006 Dec 1

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	979
ISSN (Print)	0272-9172

Conference

Conference	2006 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	06/11/27 → 06/12/1

Access to Document

10.1557/proc-979-0979-hh11-28

Cite this

@inproceedings{5bd217905cdd4de2a69b3353a13ef2e7,

title = "Precipitation of Zr2Cu stable crystalline phase from Zr 70Cu27.5Rh2.5 amorphous alloy",

abstract = "The crystallization process of Zr70Cu27.5Rh 2.5 metallic glass was studied with Transmission Electron Microscopy (TEM). In contrast to previous studies where the precipitation of metastable icosahedral quasicrystalline (IQC) particles is of the interest, we designed the present work to focus on the nucleation process of the stable Zr2Cu crystalline phase. It has been found that the alloy consists of IQC particles distributed in amorphous matrix prior to the precipitation of the Zr 2Cu stable crystalline phase and Zr2Cu nucleates from the amorphous matrix. The encounter of the IQC phase with Zr2Cu transforms the former into the latter so quickly that no interface between them was found in the present experiment. These insights provide the basis for a discussion of the stability of metallic glasses and the IQC particles.",

author = "David Cushman and Junji Saida and Chunfei Li",

year = "2006",

doi = "10.1557/proc-979-0979-hh11-28",

language = "English",

isbn = "9781604234282",

series = "Materials Research Society Symposium Proceedings",

publisher = "Materials Research Society",

pages = "104--109",

booktitle = "Thermodynamics and Kinetics of Phase Transformations in Inorganic Materials",

note = "2006 MRS Fall Meeting ; Conference date: 27-11-2006 Through 01-12-2006",

}

Cushman, D, Saida, J & Li, C 2006, Precipitation of Zr₂Cu stable crystalline phase from Zr ₇₀Cu_27.5Rh_2.5 amorphous alloy. in Thermodynamics and Kinetics of Phase Transformations in Inorganic Materials. Materials Research Society Symposium Proceedings, vol. 979, Materials Research Society, pp. 104-109, 2006 MRS Fall Meeting, Boston, MA, United States, 06/11/27. https://doi.org/10.1557/proc-979-0979-hh11-28

Precipitation of Zr₂Cu stable crystalline phase from Zr ₇₀Cu_27.5Rh_2.5 amorphous alloy. / Cushman, David; Saida, Junji; Li, Chunfei.
Thermodynamics and Kinetics of Phase Transformations in Inorganic Materials. Materials Research Society, 2006. p. 104-109 (Materials Research Society Symposium Proceedings; Vol. 979).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Cushman, David

AU - Saida, Junji

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N2 - The crystallization process of Zr70Cu27.5Rh 2.5 metallic glass was studied with Transmission Electron Microscopy (TEM). In contrast to previous studies where the precipitation of metastable icosahedral quasicrystalline (IQC) particles is of the interest, we designed the present work to focus on the nucleation process of the stable Zr2Cu crystalline phase. It has been found that the alloy consists of IQC particles distributed in amorphous matrix prior to the precipitation of the Zr 2Cu stable crystalline phase and Zr2Cu nucleates from the amorphous matrix. The encounter of the IQC phase with Zr2Cu transforms the former into the latter so quickly that no interface between them was found in the present experiment. These insights provide the basis for a discussion of the stability of metallic glasses and the IQC particles.

AB - The crystallization process of Zr70Cu27.5Rh 2.5 metallic glass was studied with Transmission Electron Microscopy (TEM). In contrast to previous studies where the precipitation of metastable icosahedral quasicrystalline (IQC) particles is of the interest, we designed the present work to focus on the nucleation process of the stable Zr2Cu crystalline phase. It has been found that the alloy consists of IQC particles distributed in amorphous matrix prior to the precipitation of the Zr 2Cu stable crystalline phase and Zr2Cu nucleates from the amorphous matrix. The encounter of the IQC phase with Zr2Cu transforms the former into the latter so quickly that no interface between them was found in the present experiment. These insights provide the basis for a discussion of the stability of metallic glasses and the IQC particles.

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