Effects of Au/Cu ratio and gallium content on the low-temperature age-hardening in Au-Cu-Ga alloys

R. Ouchida, T. Shiraishi, M. Nakagawa, M. Ohta

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The effects of Au/Cu ratio and gallium content on the low-temperature age-hardening were examined in Au-Cu binary and Au-Cu-Ga ternary alloys by hardness testing, X-ray diffraction and differential thermal analysis. In alloys in which the Au/Cu ratios greatly deviated from the equiatomic one, age-hardenability at 37 °C significantly decreased. Gallium addition lowered the liquidus temperature and increased the age-hardening rate. It is considered that the diffusion rate of the constituents increased with lowering of the liquidus temperature, and that consequently, gallium addition improved the age-hardenability.

Original languageEnglish
Pages (from-to)3863-3866
Number of pages4
JournalJournal of Materials Science
Volume30
Issue number15
DOIs
Publication statusPublished - Aug 1 1995

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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