Fatigue characteristics and microstructures of laserand non-laser welded low-cost Ti-4.5Al-2.5Cr-1.2Fe-0.1C for use in next generation aircrafts

Mitsuo Niinomi, Masaaki Nakai, Junko Hieda, Ken Cho, Yoshio Itsumi, Shogo Murakami, Hideto Oyama, Wataru Abe

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

Abstract

Ti-4.5Al-2.5Cr-1.2Fe-0.1C referred to as KS Ti-531C is a newly developed low cost titanium alloy for use in next-generation aircrafts by adding inexpensive elements such as C, Fe, Al and Cr. There is a possibility for the formation of TiCr and/or TiCr2 after a long heat treatment or welding. Therefore, relationships between the microstructures and fatigue properties of KS Ti-531C subjected to several heat treatments as well as laser welding were investigated systematically. The results showed that the fatigue strength of laser-welded KS Ti-53IC was lower than that of non-laser welded KS Ti-531C.

Original languageEnglish
Title of host publicationTMS 2014 - 143rd Annual Meeting and Exhibition, Supplemental Proceedings
PublisherMinerals, Metals and Materials Society
Pages49-56
Number of pages8
ISBN (Print)9781118889725
Publication statusPublished - 2014 Jan 1
Event143rd Annual Meeting and Exhibition, TMS 2014 - San Diego, CA, United States
Duration: 2014 Feb 162014 Feb 20

Other

Other143rd Annual Meeting and Exhibition, TMS 2014
CountryUnited States
CitySan Diego, CA
Period14/2/1614/2/20

Keywords

  • Aircraft applications
  • Fatigue
  • KS-531C
  • Laser welding
  • Low-cost titanium alloy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Fingerprint Dive into the research topics of 'Fatigue characteristics and microstructures of laserand non-laser welded low-cost Ti-4.5Al-2.5Cr-1.2Fe-0.1C for use in next generation aircrafts'. Together they form a unique fingerprint.

Cite this