Elastic constants of bcc Cu-Al-Ni alloys.

We have measured the adiabatic elastic constants of two Cu-Al-Ni martensitic alloys using ultrasonic methods and we have compared the results to recent neutron-scattering experiments. It is shown that the elastic behavior of Cu-Al-Ni alloys follows the same trends exhibited by other Cu-based alloys; in particular, the TA2 long-wavelength acoustic modes are softer than all other modes. Disciplines Condensed Matter Physics | Metallurgy Comments This article is from Physical Review B 49 (1994): 9969–9972, doi:10.1103/PhysRevB.49.9969. Authors Lluís Mañosa, M. Jurado, Antoni Planes, Jerel L. Zarestky, Thomas A. Lograsso, and C. Stassis This article is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/ameslab_pubs/106 PHYSICAL REVIEW B VOLUME 49, NUMBER 14 Elastic constants of bcc Cu-Al-Ni alloys 1 APRIL 1994-II Ll. Manosa, M. Jurado, and A. Planes Departament d Estructura i Constituents de la Materia, Facultat de Fr'sica, Uniuersitat de Barcelona, Diagonal 647, E-08028 Barcelona, Catalonia, Spain J. Zarestky, T. Lograsso, and C. Stassis Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 500II (Received 7 December 1993) We have measured the adiabatic elastic constants of two Cu-Al-Ni martensitic alloys using ultrasonic methods and we have compared the results to recent neutron-scattering experiments. It is shown that the elastic behavior of Cu-Al-Ni alloys follows the same trends exhibited by other Cu-based alloys; in particular, the TA2 long-wavelength acoustic modes are softer than all other modes.