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 journalArticle

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

Fingerprint

Titanium alloys
Infiltration
Fabrication
Lamellar structures
Mechanical properties
Metal molding
Vanadium
Injection molding
Intermetallics
Molten materials
Crack propagation
Intercellular Signaling Peptides and Proteins
Heat treatment
Cracks

All Science Journal Classification (ASJC) codes

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

Cite this

Kim, Sumin ; Jung, Hwaebong ; Rim, Hyun Jun ; Lee, Hyun Sook ; Lee, Wooyoung. / Fabrication of reinforced α+β titanium alloys by infiltration of Al into porous Ti-V compacts. In: Journal of Alloys and Compounds. 2018 ; Vol. 768. pp. 775-781.
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Fabrication of reinforced α+β titanium alloys by infiltration of Al into porous Ti-V compacts. / Kim, Sumin; Jung, Hwaebong; Rim, Hyun Jun; Lee, Hyun Sook; Lee, Wooyoung.

In: Journal of Alloys and Compounds, Vol. 768, 05.11.2018, p. 775-781.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fabrication of reinforced α+β titanium alloys by infiltration of Al into porous Ti-V compacts

AU - Kim, Sumin

AU - Jung, Hwaebong

AU - Rim, Hyun Jun

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AU - Lee, Wooyoung

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AB - 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.

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