Significant TRIP-effect improvement by manipulating ZrCu-B2 distribution in ZrCuAlCo-based bulk metallic glass composites via inoculating Ta particles

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

View graph of relations

Author(s)

  • Y.C. Liao
  • S.M. Song
  • T.H. Li
  • Y.L. Chiang
  • P.H. Tsai
  • V.T. Nguyen
  • S.Y. Li
  • J.S.C. Jang

Detail(s)

Original languageEnglish
Pages (from-to)547-555
Journal / PublicationJournal of Alloys and Compounds
Volume774
Early online date9 Oct 2018
Publication statusPublished - 5 Feb 2019

Abstract

The ZrCu-B2 phase can effectively increase the plasticity for some specified Zr based metallic glasses composite (BMGC) by transformation induced plasticity (TRIP) mechanism. However, large and non-uniformly distributed ZrCu-B2 phases usually precipitate in the Zr-based BMGC samples by conventional copper mold casting. Therefore, the concept of inoculation in conventional solidification process was applied to modify the size and distribution of ZrCu-B2 phase in this study. Ta particles (size of 5–30 μm) with 0–4.0 vol% were added into the Zr48Cu47·5Al4Co0.5 BMG matrix as the inoculant. Ta particles can act as nucleation seeds for precipitating a homogeneously distributed ZrCu-B2 phase in the matrix. Moreover, the ZrCu-B2 precipitate size can be further controlled by different solidification cooling rates. It is clearly to see that the ZrCu-B2 phase embedded in the amorphous matrix for the Zr48Cu47·5Al4Co0.5 cast rods added with 0–0.75 vol% Ta particle cast by a copper mold at −30 °C (243 K, or a cooling rate of 650 K/s). In addition, the ZrCu-B2 phase exhibits a round shape and relatively homogeneous distribution. The optimum processes BMGC can exhibit significantly improved mechanical properties (1890 MPa fracture stress and 14% plastic strain) in comparison with the base BMGC (1560 MPa fracture strength and 7.5% plastic strain).

Research Area(s)

  • Composite, Mechanical properties, Solidification, Zr-based amorphous alloy

Citation Format(s)

Significant TRIP-effect improvement by manipulating ZrCu-B2 distribution in ZrCuAlCo-based bulk metallic glass composites via inoculating Ta particles. / Liao, Y.C.; Song, S.M.; Li, T.H.; Chiang, Y.L.; Tsai, P.H.; Nguyen, V.T.; Li, S.Y.; Jang, J.S.C.; Huang, J.C.

In: Journal of Alloys and Compounds, Vol. 774, 05.02.2019, p. 547-555.

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