Title

Formation, Structure, and Crystallization Behavior of Cu-Based Bulk Glass-Forming Alloys

Authors

Authors

D. V. Louzguine-Luzgin; G. Xie; Q. Zhang; C. Suryanarayana;A. Inoue

Comments

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Abbreviated Journal Title

Metall. Mater. Trans. A-Phys. Metall. Mater. Sci.

Keywords

METALLIC-GLASS; THERMAL-STABILITY; AMORPHOUS-ALLOYS; MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; ZR; ABILITY; STRENGTH; AG; DEVITRIFICATION; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering

Abstract

We studied Cu-Zr-based alloys having exceptionally high glass-forming ability (GFA) and investigated the influence of Ag and Al addition on their structure and crystallization behavior. Most of the bulk glassy alloys (BGAs) do not contain any crystals, while some samples studied by high-resolution transmission electron microscopy (HRTEM) were found to contain well-developed medium-range order zones and nanoparticles in a bulk form. The crystallization kinetics of Cu(55)Zr(45), Cu(50)Zr(50), Cu(55-x) Zr(45)Ag (x) (x = 0, 10, 20), Cu(45)Zr(45)Al(5)Ag(5), Cu(44)Ag(15)Zr(36)Ti(5), and Cu(36)Zr(48)Al(8)Ag(8) glassy alloys was analyzed. An influence of the cooling rate on the formation of glassy phase and thermal stability of the Cu-based glassy alloys on heating was also studied. The crystallization kinetics and phase composition of the ribbon-shape and bulk glassy samples of Cu(36)Zr(48)Al(8)Ag(8) alloys were also analyzed. The results also indicate that the best glass-forming compositions are possibly located at slightly off-eutectic area, owing to the shift of the eutectic point due to the nonequilibrium processing conditions.

Journal Title

Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science

Volume

41A

Issue/Number

7

Publication Date

1-1-2010

Document Type

Article; Proceedings Paper

Language

English

First Page

1664

Last Page

1669

WOS Identifier

WOS:000277958700011

ISSN

1073-5623

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