Investigations of the reduction of NiAl{sub 2}O{sub 4}. 2: X-ray diffraction studies

Technical Report · Tue Sep 01 00:00:00 EDT 1998

DOI:https://doi.org/10.2172/296729· OSTI ID:296729

Clausen, B; Rangaswamy, P; Bourke, M A.M. ^[1]; Uestuendag, E ^[2]; Sass, S L; Barbieri, T J ^[3]

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1. Los Alamos National Lab., NM (United States). Manual Lujan Jr. Neutron Scattering Center
2. California Inst. of Technology, Pasadena, CA (United States)
3. Cornell Univ., Ithaca, NY (United States). Dept. of Materials Science and Engineering

The volume shrinkage that accompanies the reduction of NiAl{sub 2}O{sub 4} to a metal-ceramic composite of nickel and alumina leads to residual stress buildup. The authors have attempted to utilize these stresses to temper a ceramic component by placing it under compression. To prove the concept, they produced model specimens which they investigated using X-ray diffraction. Employing the conventional d vs. sin{sup 2} {Psi} method to map surface stresses, the results obtained from these measurements are presented together with finite element calculation predictions used to interpret experimental stress data.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 296729
• Report Number(s): LA-UR-98-1197; CONF-980110-; ON: DE98006342; TRN: AHC29903%%127
• Resource Relation: Conference: Engineering Ceramics Division conference and exposition on composites, advanced ceramics, materials and structures, Cocoa Beach, FL (United States), 20 Jan 1998; Other Information: PBD: [1998]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
NICKEL BASE ALLOYS
ALUMINIUM OXIDES
SYNTHESIS
RESIDUAL STRESSES
FINITE ELEMENT METHOD
EXPERIMENTAL DATA
THEORETICAL DATA