Methods for modifying the as-cast structure, in particular the grain size during precision casting of the superalloys X 40, Udimet 500 and IN 738 LC. European concerted action. Cost 50 - materials for gas turbines, Project S-4. Final report

Technical Report · Tue Aug 01 04:00:00 EDT 1978

OSTI ID:5504861

Baeckerud, L; Callmer, B; Carlsson, B; Johansson, K B; Westerlund, A

The influence of composition, thermal conditions, and casting techniques was studied in reference to the nucleation and crystal growth of superalloys. Several commercially available alloys and some synthetic alloys were used. Thermal, chemical, and X-ray analysis were done as well as a metallographic examination to study the solidification process. In particular, the addition of hafnium and boron to IN 738 LC was studied. Several detailed results are discussed.

• Research Organization: Swedish Inst. for Metal Research, Stockholm
• OSTI ID: 5504861
• Report Number(s): N-79-25217
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOY-HS-31
ALLOYS
ALUMINIUM ALLOYS
BORON ADDITIONS
BORON ALLOYS
CARBON ADDITIONS
CASTING
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
FABRICATION
GAS TURBINES
HAFNIUM ADDITIONS
HAFNIUM ALLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCONEL 738
INCONEL ALLOYS
IRON ALLOYS
MACHINERY
MANGANESE ADDITIONS
MANGANESE ALLOYS
MATERIALS
MICROSTRUCTURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
SILICON ADDITIONS
SILICON ALLOYS
STELLITE
TANTALUM ALLOYS
TITANIUM ALLOYS
TUNGSTEN ALLOYS
TURBINES
TURBOMACHINERY
UDIMET 500
UDIMET ALLOYS