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Title: Quantification of local dislocation density using 3D synchrotron monochromatic X-ray microdiffraction

Journal Article · · Materials Research Letters
 [1]; ORCiD logo [2];  [3];  [3]; ORCiD logo [4]; ORCiD logo [2]
  1. Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, People’s Republic of China, Department of Mechanical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark
  2. Department of Mechanical Engineering, Technical University of Denmark, Kongens Lyngby, Denmark
  3. Advanced Photon Source, Argonne National Laboratory, Lemont, IL, USA
  4. Center for Advancing Materials Performance from the Nanoscale (CAMP-Nano), State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an, People’s Republic of China

A novel approach evolved from the classical Wilkens’ method has been developed to quantify the local dislocation density based on X-ray radial profiles obtained by 3D synchrotron monochromatic X-ray microdiffraction. A deformed Ni-based superalloy consisting of γ matrix and γ precipitates has been employed as model material. The quantitative results show that the local dislocation densities vary with the depths along the incident X-ray beam in both phases and are consistently higher in the γ matrix than in the γ precipitates. The results from X-ray microdiffraction are in general agreement with the transmission electron microscopic observations.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China; China Scholarship Council (CSC); Danish Council for Independent Research
Grant/Contract Number:
AC02-06CH11357; 91860109; 51671154; 51927801; 2016YFB0700404; 201806280355; 8022-00340B
OSTI ID:
1772097
Alternate ID(s):
OSTI ID: 1840700
Journal Information:
Materials Research Letters, Journal Name: Materials Research Letters Vol. 9 Journal Issue: 4; ISSN 2166-3831
Publisher:
Informa UK LimitedCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (22)

The determination of density and distribution of dislocations in deformed single crystals from broadened X-ray diffraction profiles journal June 1970
A synchrotron study of defect and strain inhomogeneity in laser-assisted three-dimensionally-printed Ni-based superalloy journal November 2015
Fatigue of Materials book January 2012
X-ray microbeam measurements of individual dislocation cell elastic strains in deformed single-crystal copper journal July 2006
Dislocations and the Mechanical Properties of Crystals journal November 1956
Quantitative microdiffraction from deformed crystals with unpaired dislocations and dislocation walls journal February 2003
White microbeam diffraction from distorted crystals journal August 2001
Quantitative analysis of strain field in thin films from HRTEM micrographs journal April 1998
50 Years of TEM of dislocations: Past, present and future journal October 2006
The X-ray diffraction effects of dislocations and stacking faults in hcp and bcc metals journal December 1985
The effect of dislocation contrast on x‐ray line broadening: A new approach to line profile analysis journal November 1996
Three-dimensional X-ray structural microscopy with submicrometre resolution journal February 2002
X-ray line profile analysis of deformed Al journal February 1982
X-ray line-broadening study of the dislocation cell structure in deformed [001]-orientated copper single crystals journal March 1984
Formation and Subdivision of Deformation Structures During Plastic Deformation journal May 2006
Inhomogeneous dislocation structure in fatigued INCONEL 713 LC superalloy at room and elevated temperatures journal July 2005
Microstructure and residual elastic strain at graphite nodules in ductile cast iron analyzed by synchrotron X-ray microdiffraction journal April 2019
X-ray microdiffraction and strain gradient crystal plasticity studies of geometrically necessary dislocations near a Ni bicrystal grain boundary journal May 2009
Three-dimensional diffraction mapping by tuning the X-ray energy journal March 2011
Creep resistance of CMSX-3 nickel base superalloy single crystals journal January 1992
Direct determination of elastic strains and dislocation densities in individual subgrains in deformation structures journal June 2007
Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure and Properties journal March 2006