Consolidation of amorphous Ni-Zr-Ti-Si powders by vacuum hot-pressing method

Pee Y. Lee, Shih Sheng Hung, Jei T. Hsieh, Yu L. Lin, Chung Kwei Lin

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

In the current study, we investigated the feasibility of fabricating amorphous Ni57Zr20Ti20Si3 powders by mechanical alloying, and consolidating them into bulk metallic glasses by a vacuum hot pressing technique. The as-milled and hot-pressed samples were examined by X-ray diffraction, scanning electron microscope, and differential thermal analysis. According to the results, amorphous Ni57Zr20Ti20Si3 powders were prepared after milling elemental powder mixtures for 5 h. The amorphous powders were found to exhibit a wide supercooled liquid region of 88 K before crystallization. Bulk metallic glasses were prepared successfully by consolidating the as-milled Ni57Zr20Ti20Si3 amorphous powders using vacuum hot pressing in the supercooled liquid region. Vickers microhardnesses of the as-pressed samples are in the range of 788-830 kg/mm2.

Original languageEnglish
Pages (from-to)1277-1282
Number of pages6
JournalIntermetallics
Volume10
Issue number11-12
DOIs
Publication statusPublished - Nov 2002
Externally publishedYes

    Fingerprint

Keywords

  • C. Mechanical alloying and milling

ASJC Scopus subject areas

  • Metals and Alloys

Cite this