Effect of microstructure on tensile properties and static fracture toughness of dental gold alloy

Mitsuo Niinomi, Junji Takeda, Toshikazu Akahori, Hisao Fukui, Masashi Touyama, Hiroyuki Toda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Tensile tests and static fracture toughness tests were conducted on dental type 4 gold alloys subjected to various heat treatments. The effects of microstructures on tensile characteristics and static fracture toughness are discussed. The tensile strength of dental type 4 gold alloy increases with the solutionizing temperature. Moreover, the tensile strength of dental type 4 gold alloy increases with aging time at a solutionizing temperature of 1023 K. On the other hand, dental type 4 gold alloy exhibits reduced elongation with an increase in the solutionizing temperature. Static fracture toughness of dental type 4 gold alloy increases with an increase in the solutionizing temperature. Static fracture toughness of dental type 4 gold alloy aged for 0.3 ks is the highest, and is the lowest when it is aged for 1.8 ks, with the solutionizing temperature at 1023 K.

Original languageEnglish
Pages (from-to)1540-1544
Number of pages5
JournalMaterials Transactions
Volume46
Issue number7
DOIs
Publication statusPublished - 2005 Jul

Keywords

  • Dental gold alloy
  • Microstructure
  • Static fracture characteristic
  • Tensile characteristic

ASJC Scopus subject areas

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

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