Weldability of Zr50Cu30Al10Ni10 bulk glassy alloy by small-scale resistance spot welding

Kana Fujiwara, Shinji Fukumoto, Yoshihiko Yokoyama, Masahiko Nishijima, Atsushi Yamamoto

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A Zr-based metal glassy alloy was successfully welded by small-scale resistance spot welding (RSW). Transmission electron microscopy as well as X-ray diffractometry indicated that no crystallization occurred in both the weld nugget and the heat-affected zone. Moreover, no structural relaxation occurred, resulting in good joint quality, that is, high strength and good ductility. The morphology of the weld metal expulsion was different from that of other conventional metals, and it appears to have formed in the supercooled liquid state. The approximate cooling rate and the maximum temperature at the electrode/sheet and the faying interfaces were estimated. A sufficiently high cooling rate required for glass formation was obtained by small-scale RSW.

Original languageEnglish
Pages (from-to)302-307
Number of pages6
JournalMaterials Science and Engineering A
Volume498
Issue number1-2
DOIs
Publication statusPublished - 2008 Dec 20

Keywords

  • Cooling rate
  • Metal glassy alloys
  • Small-scale resistance spot welding
  • Supercooled liquid
  • Temperature hysteresis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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