Structure and mechanical properties of cast quasicrystal-reinforced Mg-Zn-Al-Y base alloys

Guangyin Yuan; Kenji Amiya; Hidemi Kato; Akihisa Inoue

doi:10.1557/JMR.2004.0205

Structure and mechanical properties of cast quasicrystal-reinforced Mg-Zn-Al-Y base alloys

Guangyin Yuan, Kenji Amiya, Hidemi Kato, Akihisa Inoue

Materials Development Division

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

19 Citations (Scopus)

Abstract

The structure and mechanical properties of Mg-Zn-Al-Y base cast alloys containing an icosahedral quasicrystal phase (i-phase) as a main strengthening phase were investigated. Mg-8Zn-4Al-xY base bulk alloys containing the i-phase were prepared by casting into a copper mold at moderate cooling rates. The Y addition was effective for decreasing the size of the i-phase and the increasing the homogeneity of its dispersed state. The mechanical properties examined by compression tests at room temperature were much superior to those of a conventional AZ91 Mg alloy. The creep tests at elevated temperatures indicated a promising high temperature creep resistance of the quasicrystal-reinforced Mg-Zn-Al-Y cast alloy. The strengthening mechanism was also discussed.

Original language	English
Pages (from-to)	1531-1538
Number of pages	8
Journal	Journal of Materials Research
Volume	19
Issue number	5
DOIs	https://doi.org/10.1557/JMR.2004.0205
Publication status	Published - 2004 May

ASJC Scopus subject areas

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

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title = "Structure and mechanical properties of cast quasicrystal-reinforced Mg-Zn-Al-Y base alloys",

abstract = "The structure and mechanical properties of Mg-Zn-Al-Y base cast alloys containing an icosahedral quasicrystal phase (i-phase) as a main strengthening phase were investigated. Mg-8Zn-4Al-xY base bulk alloys containing the i-phase were prepared by casting into a copper mold at moderate cooling rates. The Y addition was effective for decreasing the size of the i-phase and the increasing the homogeneity of its dispersed state. The mechanical properties examined by compression tests at room temperature were much superior to those of a conventional AZ91 Mg alloy. The creep tests at elevated temperatures indicated a promising high temperature creep resistance of the quasicrystal-reinforced Mg-Zn-Al-Y cast alloy. The strengthening mechanism was also discussed.",

author = "Guangyin Yuan and Kenji Amiya and Hidemi Kato and Akihisa Inoue",

note = "Funding Information: One of the authors (Guangyin Yuan) gratefully acknowledges the Japanese Society for the Promotion of Science (JSPS) for providing financial support to carry out the present work. The authors also acknowledge the contributions to the high-temperature Vickers hardness test by Mr. K. Sasamori.",

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AU - Yuan, Guangyin

AU - Amiya, Kenji

AU - Kato, Hidemi

AU - Inoue, Akihisa

N1 - Funding Information: One of the authors (Guangyin Yuan) gratefully acknowledges the Japanese Society for the Promotion of Science (JSPS) for providing financial support to carry out the present work. The authors also acknowledge the contributions to the high-temperature Vickers hardness test by Mr. K. Sasamori.

PY - 2004/5

Y1 - 2004/5

N2 - The structure and mechanical properties of Mg-Zn-Al-Y base cast alloys containing an icosahedral quasicrystal phase (i-phase) as a main strengthening phase were investigated. Mg-8Zn-4Al-xY base bulk alloys containing the i-phase were prepared by casting into a copper mold at moderate cooling rates. The Y addition was effective for decreasing the size of the i-phase and the increasing the homogeneity of its dispersed state. The mechanical properties examined by compression tests at room temperature were much superior to those of a conventional AZ91 Mg alloy. The creep tests at elevated temperatures indicated a promising high temperature creep resistance of the quasicrystal-reinforced Mg-Zn-Al-Y cast alloy. The strengthening mechanism was also discussed.

AB - The structure and mechanical properties of Mg-Zn-Al-Y base cast alloys containing an icosahedral quasicrystal phase (i-phase) as a main strengthening phase were investigated. Mg-8Zn-4Al-xY base bulk alloys containing the i-phase were prepared by casting into a copper mold at moderate cooling rates. The Y addition was effective for decreasing the size of the i-phase and the increasing the homogeneity of its dispersed state. The mechanical properties examined by compression tests at room temperature were much superior to those of a conventional AZ91 Mg alloy. The creep tests at elevated temperatures indicated a promising high temperature creep resistance of the quasicrystal-reinforced Mg-Zn-Al-Y cast alloy. The strengthening mechanism was also discussed.

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Structure and mechanical properties of cast quasicrystal-reinforced Mg-Zn-Al-Y base alloys

Abstract

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