Internal defects of B19' martensite via R-phase in Ti-Ni-Fe and thermally cycled Ti-Ni alloys

Tomohiro Nishiura, Minoru Nishida

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Crystallography and morphology of B19' martensite via R phase transformation in Ti-Ni-Fe alloy have been investigated by X-ray diffraction and transmission electron microscopy. The microstructure aspects of the B19' martensite in the solution treated Ti-Ni-Fe alloy was the same as those in the solution treated binary Ti-Ni alloy. In the thermal cycled Ti-Ni-Fe alloy, the (001)b19' compound twins frequently observed were the same as those in the thermal cycled binary Ti-Ni alloy. It is considered that the (001) b19' compound twin was a kind of deformation twin to reduce the internal stress due to dislocations introduced during the thermal cycle, rather than a lattice invariant shear of the R to B19' transformation.

Original languageEnglish
Pages (from-to)1219-1224
Number of pages6
JournalMaterials Transactions
Volume50
Issue number5
DOIs
Publication statusPublished - May 1 2009

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martensite
Martensite
Defects
defects
Crystallography
crystallography
residual stress
phase transformations
Residual stresses
Phase transitions
titanium nickelide
shear
Transmission electron microscopy
X ray diffraction
transmission electron microscopy
microstructure
Microstructure
cycles
diffraction
Hot Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Internal defects of B19' martensite via R-phase in Ti-Ni-Fe and thermally cycled Ti-Ni alloys. / Nishiura, Tomohiro; Nishida, Minoru.

In: Materials Transactions, Vol. 50, No. 5, 01.05.2009, p. 1219-1224.

Research output: Contribution to journalArticle

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