Composition dependence of the rubber-like behavior in ζ2′-martensite of AuCd alloys

K. Otsuka, X. Ren, Y. Murakami, T. Kawano, T. Ishii, T. Ohba

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


The effect of aging on the rubber-like behavior of martensite in a Au-50.5 at.% Cd alloy was studied, and compared with stoichiometric Au-50% at.% Cd and a Au-49.5 at.% Cd alloy. It is found that for all these alloys the critical stress for domain reversion increases with aging, and gradually saturates at long aging time, following a Chipman function. The magnitude and the rate of the aging effect are strongly dependent on composition. The magnitude decreases monotonically with increasing Cd content, but the aging rate reaches a minimum at the stoichiometric composition. These results suggest that point defects (anti-structure defects and vacancies) play a central role in the martensite aging effect, and anti-structure defects contribute much more to the magnitude of the aging effect than vacancies do.

Original languageEnglish
Pages (from-to)558-563
Number of pages6
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Publication statusPublished - Dec 15 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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