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ARTEC-A furnace module for directional solidification and quenching experiments in microgravity.

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A new microgravity furnace, ARTEC, enables high-speed directional solidification experiments. This allows for better understanding of how rapid changes in solidification velocity affect alloy microstructure.

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Area of Science:

  • Materials Science
  • Aerospace Engineering
  • Solidification Science

Background:

  • Directional solidification experiments are crucial for understanding alloy microstructure formation.
  • Previous microgravity facilities had limitations in controlling solidification velocity.
  • Aerogel materials offer excellent thermal insulation and optical transparency for furnace design.

Purpose of the Study:

  • To present a novel experimental design for directional solidification under microgravity with high cooling rates.
  • To enable the study of rapid transitions in solidification velocity and their effect on microstructure.
  • To facilitate convection-free growth studies and the investigation of alloys with significant density differences.

Main Methods:

  • Development of the Aerogel Technology for Cast alloys (ARTEC) furnace module.
  • Utilizing aerogel crucibles for thermal insulation and optical monitoring.
  • Implementing a movable cooling-rod to achieve high solidification velocities.
  • Conducting experiments in microgravity to eliminate convection effects.

Main Results:

  • ARTEC allows for a transition from low to high solidification velocities.
  • Simultaneous operation of five independent furnaces within a single sounding rocket module.
  • Optical methods enable precise control and monitoring of solidification parameters.
  • Microgravity conditions provide a platform for convection-free growth studies.

Conclusions:

  • The ARTEC facility significantly advances the capability for studying solidification phenomena under controlled microgravity conditions.
  • This setup provides a unique opportunity to investigate the influence of rapid solidification velocity changes on alloy microstructure.
  • It enables fundamental research into alloy solidification, free from convective disturbances and macrosegregation.