Detail publikačního výsledku

Near-Gamma TiAl Investment Casting and its Optimization

DLOUHÝ, A., ZEMČÍK, L., VÁLEK, R.

Originální název

Near-Gamma TiAl Investment Casting and its Optimization

Anglický název

Near-Gamma TiAl Investment Casting and its Optimization

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Two drawbacks are associated with the Induction Skull Melting process often used in the neargamma TiAl investment casting technology: (i) a relatively small achievable superheat which could cause misruns in thin-wall castings and (ii) a high investment cost necessary to built up the melting unit. Therefore, a more common melting route based on a refractory crucible has been reconsidered to overcome both disadvantages. The paper reports on results of trial casting experiments performed using this common melting route. A preliminary metallographic study indicated that, while the cast volume is free of the contamination, which would result from the reaction between the melt and the crucible, there still are internal microcracks generated during the cast solidification and cooling. Modelling and experimental effort was spent to optimise key parameters of the process (the amount of superheat, the mould temperature and the cooling kinetics) and to improve the quality of casts.

Anglický abstrakt

Two drawbacks are associated with the Induction Skull Melting process often used in the neargamma TiAl investment casting technology: (i) a relatively small achievable superheat which could cause misruns in thin-wall castings and (ii) a high investment cost necessary to built up the melting unit. Therefore, a more common melting route based on a refractory crucible has been reconsidered to overcome both disadvantages. The paper reports on results of trial casting experiments performed using this common melting route. A preliminary metallographic study indicated that, while the cast volume is free of the contamination, which would result from the reaction between the melt and the crucible, there still are internal microcracks generated during the cast solidification and cooling. Modelling and experimental effort was spent to optimise key parameters of the process (the amount of superheat, the mould temperature and the cooling kinetics) and to improve the quality of casts.

Klíčová slova

Investment casting, optimization

Klíčová slova v angličtině

Investment casting, optimization

Autoři

DLOUHÝ, A., ZEMČÍK, L., VÁLEK, R.

Vydáno

01.02.2004

Nakladatel

The Minerals, Metals + Materials Society

Místo

San Diego, California, USA

ISBN

0-87339-543-3

Kniha

TMS 2003

Edice

1

Strany od

111

Strany počet

1

BibTex

@inproceedings{BUT8430,
  author="Antonín {Dlouhý} and Ladislav {Zemčík} and Robert {Válek}",
  title="Near-Gamma TiAl Investment Casting and its Optimization",
  booktitle="TMS 2003",
  year="2004",
  series="1",
  number="1",
  pages="1",
  publisher="The Minerals, Metals + Materials Society",
  address="San Diego, California, USA",
  isbn="0-87339-543-3"
}