Fabrication of TiAl alloy by centrifugal casting and its microstructure (원심주조법에 의한 TiAl 합금의 제조 및 미세구조 분석)

Jeong-ho Ryu (류정호); LeeHoJun (이호준); Hyun Su Cho (조현수); Jong Min Paeng (팽종민); Jong Bum Park (박종범); Jung-Il Lee (이정일)

doi:10.6111/JKCGCT.2017.27.5.229

Fabrication of TiAl alloy by centrifugal casting and its microstructure

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2017, 27(5), pp.229-234
DOI : 10.6111/JKCGCT.2017.27.5.229
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Published : October 31, 2017

Jeong-ho Ryu ¹, LeeHoJun ¹, Hyun Su Cho ¹, Jong Min Paeng ¹, Jong Bum Park ¹, Jung-Il Lee ¹

¹한국교통대학교

Accredited

ABSTRACT

In this study, TiAl alloy was fabricated by a centrifugal casting method for turbo charge of automotive. Optimum conditions for defectless morphology using various ceramic mold were investigated. The crystal structure, microstructure, and chemical composition of the TiAl prepared by centrifugal casting were studied by X-ray diffractometer (XRD), optical microscopy (OM), field emission scanning electron microscopy (FE-SEM) and energy dispersive spectroscopy (EDS), microvickers hardness analyzer (HV). Two kinds of dendrite structures were observed with 4-fold and 6-fold symmetries. The FE-SEM, EDS and HV examinations of the as-cast TiAl showed that the thickness of the oxide layer (α-case) was typically less than 50 μm.

KEYWORDS

TiAl, Centrifugal casting, Turbocharger, α-Case, Dendrite

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* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Fabrication of TiAl alloy by centrifugal casting and its microstructure

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Citation status

* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Fabrication of TiAl alloy by centrifugal casting and its microstructure

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KEYWORDS

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