High-temperature ordered intermetallic alloys VIII. Materials Research Society symposium proceedings: Volume 552

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20001564

George, E P; Mills, M J; Yamaguchi, Masaharu ^[1]

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1. eds.

The symposium, High-Temperature Ordered Intermetallic Alloys VIII, was held November 30--December 3, 1998, in Boston, Massachusetts, during the MRS Fall Meeting. A number of talks in the titanium-aluminides session focused on dislocation-level mechanisms to explain the observed microstructure-property relationships. Recent work has also focused on creep, fatigue and processing as titanium-aluminide systems mature toward application. Several talks focused on the critical role that point defects play in the mechanical properties of iron-aluminides and nickel-aluminides. Advances in several promising transition-metal silicides were also presented. In particular, niobium-silicides were shown to have excellent fracture toughness and creep strength, although oxidation resistance remains a concern. Molybdenum-silicides, on the other hand, have excellent oxidation resistance at high temperature, but suffer from poor fracture toughness. Several presentations on Laves phase alloys focused on mechanisms for promoting twinning as a means of improving low-temperature toughness. Finally, the importance of computational modeling, coupled with detailed experimental analysis of dislocations and interfaces, was demonstrated in several presentations on nickel-aluminide-based systems. One hundred and nineteen papers were processed separately for inclusion on the data base.

• OSTI ID: 20001564
• Report Number(s): CONF-981104--; ISBN 1-55899-458-0; ISSN 1067-9995
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
INTERMETALLIC COMPOUNDS
IRON ALLOYS
LEADING ABSTRACT
MECHANICAL PROPERTIES
MEETINGS
MICROSTRUCTURE
NICKEL ALLOYS
NIOBIUM ALLOYS
SILICIDES
TITANIUM ALLOYS