Composition optimization of the Cu-based Cu-Zr-Al alloys

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Q. Wang
  • Y. M. Wang
  • J. B. Qiang
  • X. F. Zhang
  • C. Dong

Detail(s)

Original languageEnglish
Pages (from-to)1229-1232
Journal / PublicationIntermetallics
Volume12
Issue number10-11 SPEC. ISS.
Publication statusPublished - Oct 2004

Abstract

The present paper is concerned with the formation of the Cu-based Cu-Zr-Al bulk metallic glasses (BMGs). Composition optimization for BMG formation was realized by using an 'e/a-variant criterion' that had been successfully applied in the Zr-Al-Ni and Zr-Al-Co systems, This criterion was incorporated into the ternary phase diagram by constructing a composition line (Cu 61.8Zr38.2)1-xAlx, which was defined by linking the optimum binary composition (Cu61.8Zr38.2, a deep eutectic in this case) and the third element. BMGs were obtained within an e/a span from 1.24 to 1.3 along this composition line. Thermal analysis results indicate that these BMGs manifest increased thermal stability and glass forming ability (GFA) with increasing e/a ratios. The maximum appears in Cu 58.1Zr35.9Al6 with the e/a value of 1.3 which is the highest among our samples. The characteristic thermal parameters of this BMG are Tg=760 K, Tg/T1=0.648, which are all superior to those reported for the known Cu55Zr40Al 5 BMG. © 2004 Elsevier Ltd. All rights reserved.

Research Area(s)

  • B. Alloy design, C. Casting

Citation Format(s)

Composition optimization of the Cu-based Cu-Zr-Al alloys. / Wang, Q.; Wang, Y. M.; Qiang, J. B.; Zhang, X. F.; Shek, C. H.; Dong, C.

In: Intermetallics, Vol. 12, No. 10-11 SPEC. ISS., 10.2004, p. 1229-1232.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review