High-strength bulk nanocrystalline alloys in a Zr-based system containing compound and glassy phases

Akihisa Inoue, Cang Fan, Akira Takeuchi

Research output: Contribution to journalConference articlepeer-review

20 Citations (Scopus)

Abstract

Polycrystalline alloys with tensile strength (σf) in Zr-Al-Cu-Pd and Zr-Al-Cu-Pd-Fe systems were formed by partial crystallization of cast glassy alloys. The alloys consist of nanometer scale Zr2(Cu,Pd) surrounded by a glassy phase. The particle size and interparticle spacing of the compound are less than 10 and 2 nm, respectively. The crystallization of a ternary Zr60Al10Cu30 amorphous alloy occurs by the simultaneous precipitation of Zr2Al and Zr2Cu with particle size of 200 nm and hence the addition of Pd is essential for formation of the nanostructure (NS). The NS cylindrical alloys of 2-3 mm in diameter keep good ductility in the volume fraction (Vf) range of the compound below 40%. The σf and Young's modulus (E) increase from 1760 MPa and 81.5 GPa, respectively, at Vf = 0% to 1880 MPa and 89.5 GPa respectively, at Vf = 40% for the Zr60Al10Cu20Pd10 alloy. The formation of the NS alloys with high σf in coexistence with the compound is presumably because the remaining glassy phase contains free volumes by quenching from the supercooled liquid. The synthesis of the high-strength bulk NS alloys is important for future development of new high-strength materials.

Original languageEnglish
Pages (from-to)724-728
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume250-252 (II)
DOIs
Publication statusPublished - 1999 Aug 1
EventProceedings of the 1998 10th International Conference on Liquid and Amorphous Metals (LAM-10) - Dortmund, Ger
Duration: 1998 Aug 301998 Sep 4

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'High-strength bulk nanocrystalline alloys in a Zr-based system containing compound and glassy phases'. Together they form a unique fingerprint.

Cite this