Rate sensitivities for low temperature deformation in ruthenium aluminide alloys
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
Because of the need for new high temperature structural materials, a number of binary and multicomponent B2 aluminides have been investigated in recent years. Some alloys based on FeAl and Nb-Ti-Al are relatively ductile at low temperatures, but suffer from environmental embrittlement and/or relatively low melting temperatures. One apparent exception to the brittle behavior of the higher temperature B2 aluminides is ruthenium aluminide, RuAl, which has a melting point of approximately 2,060 C. Fleischer et al. have reported a high room temperature toughness and high compressive ductilities for a number of alloys based on RuAl, compared to a variety of other intermetallic compounds. The objective of the experiments reported here was to measure room temperature rate sensitivities for a number of the same RuAl-based alloys, to determine if the phenomenological flow parameters that relate to dislocation glide processes are also unusual, compared to other higher temperature B2 compounds.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- OSTI ID:
- 619458
- Journal Information:
- Scripta Materialia, Vol. 38, Issue 7; Other Information: PBD: 3 Mar 1998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Environmental embrittlement of iron aluminides in moisture-containing atmospheres
Thermal conductivity of ruthenium aluminide (RuAl)