Resonant ultrasound spectroscopy: Elastic properties of some intermetallic compounds
- Los Alamos National Lab., NM (United States). Materials Science Technology Div.
A novel nondestructive evaluation method, resonant ultrasound spectroscopy (RUS), is reviewed with an emphasis upon defining the elastic properties of intermetallic phases. The applications and advantages of RUS as compared to other conventional elastic constant measurement methods are explained. RUS has been employed to measure the elastic properties of single crystal and/or polycrystalline intermetallics, such as Laves phases (C15 HfV{sub 2} and NbCr{sub 2}), Nb-modified titanium aluminides, and transition metal disilicides (C11{sub b} MoSi{sub 2}, C40 NbSi{sub 2} and TaSi{sub 2}). For Laves phases, the elastic properties of HfV{sub 2}-based C15 phases show various anomalies and those of C15 NbCr{sub 2} do not. For Nb-modified titanium aluminides, the elastic properties of O-phase alloys are investigated as a function of alloying content. For transition metal disilicides, single crystal elastic constants of MoSi{sub 2}, NbSi{sub 2}, and TaSi{sub 2} are obtained and compared. Based on the experimentally determined elastic properties, the characteristics of interatomic bonding in these materials are examined and the possible impact of the elastic properties on mechanical behavior is discussed.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 378866
- Report Number(s):
- LA-UR--96-2318; CONF-961017--3; ON: DE96013982
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
ALUMINIUM ALLOYS
CHROMIUM BASE ALLOYS
COMPARATIVE EVALUATIONS
DATA
ELASTICITY
HAFNIUM ALLOYS
INTERMETALLIC COMPOUNDS
LAVES PHASES
MOLYBDENUM SILICIDES
MONOCRYSTALS
NIOBIUM ALLOYS
NIOBIUM SILICIDES
NONDESTRUCTIVE TESTING
TANTALUM SILICIDES
TEMPERATURE DEPENDENCE
TITANIUM ALLOYS
VANADIUM BASE ALLOYS