Nanocrystalline (NC) Ti49.4Ni50.6 alloy with the grain size of 20-100 nm has been successfully produced using high pressure torsion (HPT) and annealing. The ultra fine grained (UFG) structure with the grain size of 300 nm in Ti49.4Ni50.6 alloy has been produced using equal channel angular pressing (ECAP). The mechanisms of deformation behavior of the NC and UFG TiNi have been determined. The features of microstructure, martensitic transformation and deformation behavior of the NC and UFG alloy at room and elevated temperatures have been studied in details. The NC TiNi exhibits unusual enhanced strength. The UFG TiNi exhibits unusual enhanced ductility and high strength. The effects of the grain size on mechanical properties of the alloy are discussed.

Original languageEnglish
Title of host publicationMETAL 2012 - Conference Proceedings, 21st International Conference on Metallurgy and Materials
PublisherTANGER, Ltd.
Pages1335-1341
Number of pages7
ISBN (Electronic)9788087294314
StatePublished - 1 Jan 2012
Event21st International Conference on Metallurgy and Materials, METAL 2012 - Brno, Czech Republic
Duration: 23 May 2012 → 25 May 2012

Publication series

NameMETAL 2012 - Conference Proceedings, 21st International Conference on Metallurgy and Materials

Conference

Conference21st International Conference on Metallurgy and Materials, METAL 2012
Country/TerritoryCzech Republic
CityBrno
Period23/05/12 → 25/05/12

    Research areas

  • Deformation mechanisms, Martencite transformation, Nano - and ultrafine structures

    Scopus subject areas

  • Surfaces, Coatings and Films
  • Mechanics of Materials
  • Metals and Alloys

ID: 40879070