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

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルCost-Affordable Titanium III
出版社Trans Tech Publications Ltd
ページ171-177
ページ数7
ISBN(印刷版)0878492763, 9780878492763
DOI
出版ステータスPublished - 2010
イベントTMS 2010 Spring Symposium on Cost-Affordable Titanium III - Seattle, WA, United States
継続期間: 2010 2月 142010 2月 18

出版物シリーズ

名前Key Engineering Materials
436
ISSN(印刷版)1013-9826
ISSN(電子版)1662-9795

Other

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

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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