Study of reduced chromium content in a nickel-base superalloy via element substitution and rapid solidification processing. Ph. D. Thesis. Final report
A study of reduced chromium content in a nickel base superalloy via element substitution and rapid solidification processing was performed. The two elements used as partial substitutes for chromium were Si and Zr. The microstructure of conventionally solidified materials was characterized using microscopy techniques. These alloys were rapidly solidified using the chill block melt spinning technique and the rapidly solidified microstructures were characterized using electron microscopy. The spinning technique and the rapidly solidified microstructures was assessed following heat treatments at 1033 and 1272 K. Rapidly solidified material of three alloys was reduced to particulate form and consolidated using hot isostatic pressing (HIP). The consolidated materials were also characterized using microscopy techniques. In order to evaluate the relative strengths of the consolidated alloys, compression tests were performed at room temperature and 1033 K on samples of as-HIPed and HIPed plus solution treated material. Yield strength, porosity, and oxidation resistance characteristics are given and compared.
- Research Organization:
- Illinois Univ., Urbana (USA)
- OSTI ID:
- 6148986
- Report Number(s):
- N-87-25456; NASA-CR-179631; NAS-1.26:179631
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NICKEL BASE ALLOYS
COMPRESSIBILITY
OXIDATION
POROSITY
YIELD STRENGTH
CHEMICAL COMPOSITION
CHROMIUM ADDITIONS
EXPERIMENTAL DATA
MICROSTRUCTURE
SILICON ADDITIONS
SOLIDIFICATION
ZIRCONIUM ADDITIONS
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CRYSTAL STRUCTURE
DATA
INFORMATION
MECHANICAL PROPERTIES
NICKEL ALLOYS
NUMERICAL DATA
PHASE TRANSFORMATIONS
SILICON ALLOYS
ZIRCONIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties