Texture Crossover: Trace from Multiple Grains to a Subgrain

Journal Article · Fri Jan 01 00:00:00 EST 2010 · Materials Science and Engineering A

DOI:https://doi.org/10.1016/j.msea.2010.07.035· OSTI ID:991181

Barabash, Rozaliya ^[1]; Huang, E-Wen ^[1]; Wall, James J ^[2]; Yang, Dr Ren ^[3]; Liu, Wenjun ^[1]; Vogel, Sven ^[2]; Ice, Gene E ^[1]; Pike, Lee M ^[1]; Liaw, Peter K ^[4]

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1. ORNL
2. Los Alamos National Laboratory (LANL)
3. Argonne National Laboratory (ANL)
4. University of Tennessee, Knoxville (UTK)

Neutron and synchrotron x-ray diffraction were used to study the texture development in the nickel-based superalloys over three levels of gauge volumes from hundreds of cubic millimeters down to several cubic micrometers. The coordinated synchrotron microbeam experimental investigation shows local deformation unlike that of the bulk. The bulk averaged results show a uniform texture development from collective slip. However, the plastic deformation within a single grain is mediated by limited slip, as evidenced by the local strain distribution. Through a kinematic approximation, simulated Laue patterns are compared with microbeam-diffraction experimental results, which show several distinct structural zones even in the same grain. The possible reasons of this observed structural evolution are discussed.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 991181
• Journal Information: Materials Science and Engineering A, Vol. 528, Issue 1; ISSN 0921-5093
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DEFORMATION
DISTRIBUTION
HEAT RESISTING ALLOYS
NICKEL BASE ALLOYS
PLASTICS
SLIP
STRAINS
TEXTURE
X-RAY DIFFRACTION