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Title: Texture crossover : trace from multiple grains to a subgrain.

Abstract

Neutron and synchrotron X-ray diffractions were used to study the texture development in the face-centered-cubic nickel-based superalloy over gauge volumes ranging from hundreds of cubic millimeters down to sub-cubic micrometers. The bulk averaged results find a uniform texture development from collective slip. However, X-ray microbeam studies at microscale find that the plastic deformation within a single grain is mediated by limited slip, as evidenced by the local strain distribution. Polychromatic microdiffraction shows the formation of several distinct structural zones even in the same grain. A hierarchical heterogeneous geometrically-necessary dislocations arrangement and distinct slip bands are observed within each grain. A depth-dependent change of the stereographic projection within the slip band in the grain is demonstrated. Correlated oscillations of the lattice orientation at the submicron scale evolve into an overall texture at the macroscale. Possible reasons for this observed structural evolution are discussed.

Authors:
; ; ; ; ; ; ; ; ;  [1]
  1. X-Ray Science Division
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
1019264
Report Number(s):
ANL/XSD/JA-70544
Journal ID: 0921-5093; TRN: US201114%%734
DOE Contract Number:  
DE-AC02-06CH11357
Resource Type:
Journal Article
Journal Name:
Mat. Sci. Eng. A
Additional Journal Information:
Journal Volume: 528; Journal Issue: Nov. 2010
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE; DEFORMATION; DISLOCATIONS; DISTRIBUTION; FCC LATTICES; HEAT RESISTING ALLOYS; NEUTRONS; ORIENTATION; OSCILLATIONS; PLASTICITY; PLASTICS; SCATTERING; SLIP; STRAINS; SYNCHROTRONS; TEXTURE; X-RAY DIFFRACTION

Citation Formats

Barabash, R I, Huang, E W, Wall, J J, Wilkerson, J H, Ren, Y, Liu, W, Vogel, S C, Ice, G E, Pike, M, Liaw, P K, ORNL), Univ. of Tennessee), National Central Univ.), LANL), and Haynes International, Inc.). Texture crossover : trace from multiple grains to a subgrain.. United States: N. p., 2010. Web. doi:10.1016/j.msea.2010.07.035.
Barabash, R I, Huang, E W, Wall, J J, Wilkerson, J H, Ren, Y, Liu, W, Vogel, S C, Ice, G E, Pike, M, Liaw, P K, ORNL), Univ. of Tennessee), National Central Univ.), LANL), & Haynes International, Inc.). Texture crossover : trace from multiple grains to a subgrain.. United States. doi:10.1016/j.msea.2010.07.035.
Barabash, R I, Huang, E W, Wall, J J, Wilkerson, J H, Ren, Y, Liu, W, Vogel, S C, Ice, G E, Pike, M, Liaw, P K, ORNL), Univ. of Tennessee), National Central Univ.), LANL), and Haynes International, Inc.). Mon . "Texture crossover : trace from multiple grains to a subgrain.". United States. doi:10.1016/j.msea.2010.07.035.
@article{osti_1019264,
title = {Texture crossover : trace from multiple grains to a subgrain.},
author = {Barabash, R I and Huang, E W and Wall, J J and Wilkerson, J H and Ren, Y and Liu, W and Vogel, S C and Ice, G E and Pike, M and Liaw, P K and ORNL) and Univ. of Tennessee) and National Central Univ.) and LANL) and Haynes International, Inc.)},
abstractNote = {Neutron and synchrotron X-ray diffractions were used to study the texture development in the face-centered-cubic nickel-based superalloy over gauge volumes ranging from hundreds of cubic millimeters down to sub-cubic micrometers. The bulk averaged results find a uniform texture development from collective slip. However, X-ray microbeam studies at microscale find that the plastic deformation within a single grain is mediated by limited slip, as evidenced by the local strain distribution. Polychromatic microdiffraction shows the formation of several distinct structural zones even in the same grain. A hierarchical heterogeneous geometrically-necessary dislocations arrangement and distinct slip bands are observed within each grain. A depth-dependent change of the stereographic projection within the slip band in the grain is demonstrated. Correlated oscillations of the lattice orientation at the submicron scale evolve into an overall texture at the macroscale. Possible reasons for this observed structural evolution are discussed.},
doi = {10.1016/j.msea.2010.07.035},
journal = {Mat. Sci. Eng. A},
number = Nov. 2010,
volume = 528,
place = {United States},
year = {2010},
month = {11}
}