Neutron scattering characterization of microstructure in uranium silicides, ceramic composites and Ni-based alloys [electronic resource].
- Published
- Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1997.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 12 pages : digital, PDF file
- Additional Creators
- Argonne National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Neutron scattering has proven to be a valuable tool for studying the microstructural properties of technologically important materials. The exceptionally high penetration power of neutrons enables the investigation of bulk materials, while unusual scattering contrasts observed in many materials provide unique access to important properties. Macroscopic performance of components under extreme conditions, which ultimately determines their viability for special applications, is often closely related to microstructural properties such as particle size, residual stress and phase stability. Neutron scattering experiments performed with samples exposed to realistic environmental conditions provide direct correlation between microscopic and macroscopic properties. Neutron irradiation of uranium silicide (a prospective reactor fuel), is used here as a prototypical example of in situ residual stress generation and evolution, accompanied by direct amorphization. Neutron diffraction studies at IPNS identified structural instabilities which contributed to material failure. Highly accurate measurements of residual strains in ceramic composites are used to validate computer models for stress variation with temperature and the effects of interfacial fiber coatings on residual stress. Coarsening and lattice mismatch of γ′-type Ni₃(Al,Si) particles in Ni-based alloys, which strongly influence coherency strains in these materials, are also measured directly using neutron scattering.
- Report Numbers
- E 1.99:anl/ipns/cp--93965
E 1.99: conf-9707128--
conf-9707128--
anl/ipns/cp--93965 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
10/01/1997.
"anl/ipns/cp--93965"
" conf-9707128--"
"DE98050373"
Computer aided design of high temperature materials conference, Santa Fe, NM (United States), 30 Jul - 2 Aug 1997.
Richardson, J.W. Jr. - Funding Information
- W-31109-ENG-38
View MARC record | catkey: 14452236