Resonant ultrasound spectroscopy: Elastic properties of some intermetallic compounds

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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 ... continued below

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12 p.

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Chu, F.; Thoma, D.J.; He, Y.; Maloy, S.A. & Mitchell, T.E. September 1, 1996.

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Description

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.

Physical Description

12 p.

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INIS; OSTI as DE96013982

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  • American Society of Mechanical Engineers (ASME) and Metals materials week, Cincinnati, OH (United States), 6-10 Oct 1996

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  • Other: DE96013982
  • Report No.: LA-UR--96-2318
  • Report No.: CONF-961017--3
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 378866
  • Archival Resource Key: ark:/67531/metadc685322

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  • September 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 29, 2016, 7:20 p.m.

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Chu, F.; Thoma, D.J.; He, Y.; Maloy, S.A. & Mitchell, T.E. Resonant ultrasound spectroscopy: Elastic properties of some intermetallic compounds, article, September 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc685322/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.