Fabrication of reinforced α+β titanium alloys by infiltration of Al into porous Ti-V compacts

Sumin Kim, Hwaebong Jung, Hyun Jun Rim, Hyun Sook Lee, Wooyoung Lee

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We present an efficient process to fabricate reinforced titanium α + β alloys. Porous Ti compacts containing vanadium were prepared by a metal injection molding process. Infiltration of molten Al and subsequent heat treatments were performed to synthesize a variety of Ti-V-Al alloys. The V-added specimens showed better mechanical properties than those of V-free Ti-Al intermetallic compounds. Microstructural observation of the fracture surface revealed that the lamellar structure in the Ti-V-Al alloys plays an important role in improving their mechanical properties by postponing the propagation of cracks. Notably, the lamellar structures in the Ti-V-Al alloys disappeared and the mechanical properties deteriorated as the Al infiltration duration time increased. Therefore, Al infiltration time is a crucial factor for successful growth of well-defined lamellar structured α + β phases in Ti-V-Al alloys.

Original languageEnglish
Pages (from-to)775-781
Number of pages7
JournalJournal of Alloys and Compounds
Volume768
DOIs
Publication statusPublished - 2018 Nov 5

Bibliographical note

Funding Information:
This work was supported by the Priority Research Centers Program ( 2009-0093823 ) through the National Research Foundation of Korea (NRF).

Publisher Copyright:
© 2018 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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