Microstructure, creep and fracture toughness of directionally solidified NiAl/(Cr,Mo) alloys modified with Hf, Si, Ta, Ti additions
Conference
·
OSTI ID:20001635
A statistical design of experiments (DOE) strategy was implemented to optimize alloys based on the Ni-33Al-31Cr-3Mo eutectic system using small amounts of potential strengthening elements (Hf, Si, Ta, Ti). Following the analysis of the DOE results, several alloys were selected for directionally solidification (DS) utilizing a modified Bridgeman technique. The as-grown alloys were microstructurally examined by optical and scanning electron microscopy. They were also evaluated for fracture toughness at room temperature and compressive properties at 1,300K. The microstructures and mechanical properties of these DS DOE alloys are discussed and compared to the directionally solidified Ni-33Al-31Cr-3Mo base composition.
- Research Organization:
- Case Western Reserve Univ. at NASA Lewis Research Center, Cleveland, OH (US)
- OSTI ID:
- 20001635
- Report Number(s):
- CONF-981104--; ISBN 1-55899-458-0; ISSN 1067-9995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ti-modified niobium-silicide based directionally solidified in-situ composites
Creep in Directionally Solidified NiAl-Mo Eutectics
Assessment of Directionally Solidified Eutectic Sm–Fe(Co)–Ti Alloys as Permanent Magnet Materials
Book
·
Tue Dec 30 23:00:00 EST 1997
·
OSTI ID:571911
Creep in Directionally Solidified NiAl-Mo Eutectics
Journal Article
·
Fri Dec 31 23:00:00 EST 2010
· Scripta Materialia
·
OSTI ID:1023304
Assessment of Directionally Solidified Eutectic Sm–Fe(Co)–Ti Alloys as Permanent Magnet Materials
Journal Article
·
Sun May 28 20:00:00 EDT 2023
· IEEE Transactions on Magnetics
·
OSTI ID:1975064