Microscopic deformation behavior and microstructural evolution in Ti-Nb-Ta-M (M=In, Ag, or Cr) β alloys

W. Xu, M. Calin, K. B. Kim, J. Das, K. Xia, J. Eckert

Research output: Contribution to conferencePaper

Abstract

The microstructural evolution upon compressive loading was identified for metastable Ti-Nb-Ta-M (M=In, Ag, or Cr)β alloys with different phase stability against β→α" martensitic transformation. With increasing degree of deformation, martensitic transformation and deformation twinning are initially operative followed by slip of dislocations for the less stabilized In- and Ag-containing alloys, whereas slip is initially operative followed by fine deformation twinning for the relatively more stable Cr-containing alloy. As a result of the cumulative interactions between slip dislocations, α" martensite and deformation twins, a pronounced grain refinement of the β grains to the nanoscale (50~100 nm) occurs in the In- and Ag-containing alloys with low stacking fault energy. A plausible mechanism is proposed for the easy deformation-induced nanostructuring.
Original languageEnglish
Pages111-120
Number of pages10
Publication statusPublished - 2010
Externally publishedYes
EventWorld Premier International Research Center Advanced Institute for Materials Research Annual Workshop - Miyagi Prefecture, Japan
Duration: 1 Mar 20096 Mar 2009

Workshop

WorkshopWorld Premier International Research Center Advanced Institute for Materials Research Annual Workshop
CityMiyagi Prefecture, Japan
Period1/03/096/03/09

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