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Investment Casting Technology Tailored to Near-Gamma TiAl Alloys

DLOUHÝ, A., ZEMČÍK, L.

Originální název

Investment Casting Technology Tailored to Near-Gamma TiAl Alloys

Anglický název

Investment Casting Technology Tailored to Near-Gamma TiAl Alloys

Druh

Audiovizuální tvorba

Originální abstrakt

The present study reports on the investment casting of near-gamma TiAl intermetallics. The attention is paid mainly to the minimization of thermal mismatch strains generated in an intermetallic cast and a ceramic shell mould during cooling to room temperature. The mismatch strains stem from different thermal expansion coefficients of near-gamma TiAl alloy and the mould ceramics. A numerical modeling and optimization helped to spot those process parameters that are most influential with respect to the stress state in the cast-mould system. The optimization based on a sequential technique and on a modified random search routine yielded a processing window in which sound casts can be fabricated.

Anglický abstrakt

The present study reports on the investment casting of near-gamma TiAl intermetallics. The attention is paid mainly to the minimization of thermal mismatch strains generated in an intermetallic cast and a ceramic shell mould during cooling to room temperature. The mismatch strains stem from different thermal expansion coefficients of near-gamma TiAl alloy and the mould ceramics. A numerical modeling and optimization helped to spot those process parameters that are most influential with respect to the stress state in the cast-mould system. The optimization based on a sequential technique and on a modified random search routine yielded a processing window in which sound casts can be fabricated.

Klíčová slova v angličtině

TiAl Intermetallics, Investment casting

Autoři

DLOUHÝ, A., ZEMČÍK, L.

Vydáno

30.05.2005

Nakladatel

University of Applied Sciences Aargau

Místo

Aargau

Kniha

First Invited COST 526 Conference on Automatic Process Optimization in Materials Technology

Edice

1

Strany od

146

Strany počet

9

BibTex

@misc{BUT63414,
  author="Antonín {Dlouhý} and Ladislav {Zemčík}",
  title="Investment Casting Technology Tailored to Near-Gamma TiAl Alloys",
  booktitle="First Invited COST 526 Conference on Automatic Process Optimization in Materials Technology",
  year="2005",
  series="1",
  edition="1",
  pages="9",
  publisher="University of Applied Sciences Aargau",
  address="Aargau",
  note="Audiovisual work"
}