Microstructure and mechanical properties of α′ martensite type Ti-V-Al alloy after cold- or hot working process

Hiroaki Matsumoto, Hiroshi Yoneda, Kazuhisa Sato, Toyohiko J. Konno, Shingo Kurosu, Damien Fabregue, Eric Maire, Akihiko Chiba

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Ti alloys are widely utilized for industrial applications due to their excellent mechanical properties combined with low density. In general, Ti alloys are classified as a, α+β and β alloys, with further subdivision into near α and metastable β alloys. Quite recently, we have presented new type structural α′ martensite (H.C.P.) Ti alloys with low Young's modulus, high strength and excellent ductility at room temperature. In this work, we examined the microstructure and mechanical properties of α′ martensite type Ti-V-Al alloy after cold- or hot working process. Then, we found that deformation behavior of α′ initial microstructure as compared with (α+β) initial microstructure was different based on the results of stress-strain curves and Processing Maps under the hot working process. Further, cold rolled α′ martensite microstructure exhibited the refined equiaxed dislocation cell structure, thereby resulting in high strength. This result suggests the new type deformation processing (for both cold- and hot work processing) utilizing α′ martensite in industrial Ti alloys.

Original languageEnglish
Title of host publicationCost-Affordable Titanium III
PublisherTrans Tech Publications Ltd
Pages171-177
Number of pages7
ISBN (Print)0878492763, 9780878492763
DOIs
Publication statusPublished - 2010 Jan 1
EventTMS 2010 Spring Symposium on Cost-Affordable Titanium III - Seattle, WA, United States
Duration: 2010 Feb 142010 Feb 18

Publication series

NameKey Engineering Materials
Volume436
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

OtherTMS 2010 Spring Symposium on Cost-Affordable Titanium III
CountryUnited States
CitySeattle, WA
Period10/2/1410/2/18

Keywords

  • Arufa prime martensite
  • Cold working
  • Hot working
  • Ti-V-Al alloy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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