Static and dynamic displacements in {alpha}-phase FeCr
- Oak Ridge National Lab., TN (United States)
- Lawrence Livermore National Lab., CA (United States)
- National Institute of Standards and Technology, Gaithersburg, MD (United States). Reactor Radiation Div.
- Houston Univ., TX (United States). Dept. of Physics
A single crystal of {alpha}-Fe{sub 0.47}Cr{sub 0.53} was annealed at 1100K, 5K above the {sigma}-phase transition temperature, for four days and then water quenched. A detailed investigation using X-ray synchrotron radiation was previously carried out to study the short-range order and static displacements in this alloy. The phonon dispersion curves, studied here by inelastic neutron scattering, appear typical of bcc alloys and the phonon groups are observed to be significantly broadened in the vicinity of the dip at {xi}=2/3 in the longitudinal [{xi} {xi} {xi}] phonon dispersion. In this paper we explore the possibility that nearly random concentration fluctuations and an extremely small difference in the atomic sizes, together with an appropriate lattice response function, can nonetheless produce elastic diffuse scattering indicative of a new phase.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 95286
- Report Number(s):
- CONF-941144-167; ON: DE95014588; CNN: Grant DMR-9208450
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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