Deformation and microstructure of Ti-14Mo alloy in over aged state

Yoshito Takemoto, M. Hida, A. Sakakibara

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Deformation and microstructure were investigated on Ti-14 mass%Mo alloy in over aged state using the duplex aging method. In the over aged state only hardness decreased in spite of no change in both size and composition of ω phase. Though the ω phase aged at 623 K for 1 × 106 s had the maximum hardness and resulted in the brittle fracture through ω→β″ transformation, they became soft by over aging and transformed to α phase within the deformation band. The α particles in the band were sheared by {1011}α twinning which direction was perpendicular to the band product. The twinning of α particles was regarded as a complementary deformation with volume change in the ω→α transformation. It was suggested that the occurrence of the band product consisted of β+α phases would not be directly connected with brittle fracture.

Original languageEnglish
Pages (from-to)1067-1071
Number of pages5
JournalMaterials Transactions
Volume38
Issue number12
Publication statusPublished - Dec 1997

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Twinning
Brittle fracture
microstructure
Microstructure
twinning
Aging of materials
Hardness
hardness
products
occurrences
Chemical analysis
Direction compound

Keywords

  • α phase
  • ω phase
  • Deformation
  • Duplex age
  • Microstructure
  • Over age
  • Titanium-molybdenum alloy
  • Transformation
  • Twin

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Deformation and microstructure of Ti-14Mo alloy in over aged state. / Takemoto, Yoshito; Hida, M.; Sakakibara, A.

In: Materials Transactions, Vol. 38, No. 12, 12.1997, p. 1067-1071.

Research output: Contribution to journalArticle

Takemoto, Y, Hida, M & Sakakibara, A 1997, 'Deformation and microstructure of Ti-14Mo alloy in over aged state', Materials Transactions, vol. 38, no. 12, pp. 1067-1071.
Takemoto, Yoshito ; Hida, M. ; Sakakibara, A. / Deformation and microstructure of Ti-14Mo alloy in over aged state. In: Materials Transactions. 1997 ; Vol. 38, No. 12. pp. 1067-1071.
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