Development of low-cost high-strength beta-type titanium alloys using a metal injection molding

Ken Cho, Mitsuo Niinomi, Masaaki Nakai, Pedro F. Santos, Yoshinori Itoh, Masahiko Ikeda

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

Abstract

Ti-13Mn was fabricated using a metal injection molding method to develop a new low-cost high-strength β-type titanium alloy. The Vickers hardness, ultimate tensile strength (UTS), and elongation of the as-sintered and solutionized Ti-13Mn are 284 Hv and 279 Hv, 840 MPa and 880 MPa, and 0.9% and 1.2%, respectively. Although the elongation of the as-sintered and solutionized Ti-13Mn is lower than that of aged Ti-6A1-4V (Ti64) ELI, its UTS is the same as that of aged Ti64 ELI. Moreover, after Ti-13Mn being subjected to 90% cold rolling, its Vickers hardness and UTS significantly increased to 460 Hv and 1852 MPa, respectively. The UTS of cold-rolled Ti-13Mn can be considered extremely high among those of β-type titanium alloys, including Ti-15V-3Al-3Sn-3Cr. The increase in the dislocation density, the formation of a deformation-induced ω phase, and the decrease in porosity result in the strengthening of the solutionized Ti-13Mn.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1551-1558
Number of pages8
ISBN (Electronic)9781634397230
Publication statusPublished - 2014 Jan 1
EventMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014 - Pittsburgh, United States
Duration: 2014 Oct 122014 Oct 16

Publication series

NameMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014
Volume3

Other

OtherMaterials Science and Technology Conference and Exhibition 2014, MS and T 2014
CountryUnited States
CityPittsburgh
Period14/10/1214/10/16

Keywords

  • High-strength Ti alloy
  • Low-cost Ti alloy
  • Metal injection molding
  • β-type Ti alloy

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Materials Science(all)

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  • Cite this

    Cho, K., Niinomi, M., Nakai, M., Santos, P. F., Itoh, Y., & Ikeda, M. (2014). Development of low-cost high-strength beta-type titanium alloys using a metal injection molding. In Materials Science and Technology Conference and Exhibition 2014, MS and T 2014 (pp. 1551-1558). (Materials Science and Technology Conference and Exhibition 2014, MS and T 2014; Vol. 3). Association for Iron and Steel Technology, AISTECH.