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Title: Orientation-dependent fatigue damage in planar slip metals

Abstract

Shear banding as a ubiquitous phenomenon is mostly observed in planar slip metals under complex plastic deformation conditions, especially in cyclic deformation. The deformation substructures and local damages during fatigue vary from grain to grain, which depends greatly on the crystallographic orientation. Despite previous extensive studies, the orientation-dependent deformation substructure is still elusive due to the complexity of damage evolution and the limitation of spatial resolution in both reciprocal and real sample spaces by conventional characterization methods. In this study, we conducted synchrotron-based X-ray micro-diffraction (mu XRD) experiments to explore the dependence of localized elastic strains on grain orientation. It is demonstrated that the typical intersection of slip shear bands (SSBs) with Lomer-Cottrell locks (LCLs) are the potential damage locations, which are most likely to form in the near [001]//LD grains. The advanced. XRD with ability of spatially quantify the localized strains/fine orientations opens new opportunities for understanding the microscopic mechanisms of damage and failure in bulk materials.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Fundamental Research Funds for the Central Universities; Chinese Academy of Sciences (CAS) - State Key Laboratory for Advanced Metals and Materials; National Key Research and Development Program of China; National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1473584
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 18th International Conference on Textures of Materials, 11/05/17 - 11/10/17, St George, UT, US
Country of Publication:
United States
Language:
English

Citation Formats

Li, R G, Liu, W J, and Wang, Y D. Orientation-dependent fatigue damage in planar slip metals. United States: N. p., 2018. Web. doi:10.1088/1757-899X/375/1/012029.
Li, R G, Liu, W J, & Wang, Y D. Orientation-dependent fatigue damage in planar slip metals. United States. doi:10.1088/1757-899X/375/1/012029.
Li, R G, Liu, W J, and Wang, Y D. Mon . "Orientation-dependent fatigue damage in planar slip metals". United States. doi:10.1088/1757-899X/375/1/012029.
@article{osti_1473584,
title = {Orientation-dependent fatigue damage in planar slip metals},
author = {Li, R G and Liu, W J and Wang, Y D},
abstractNote = {Shear banding as a ubiquitous phenomenon is mostly observed in planar slip metals under complex plastic deformation conditions, especially in cyclic deformation. The deformation substructures and local damages during fatigue vary from grain to grain, which depends greatly on the crystallographic orientation. Despite previous extensive studies, the orientation-dependent deformation substructure is still elusive due to the complexity of damage evolution and the limitation of spatial resolution in both reciprocal and real sample spaces by conventional characterization methods. In this study, we conducted synchrotron-based X-ray micro-diffraction (mu XRD) experiments to explore the dependence of localized elastic strains on grain orientation. It is demonstrated that the typical intersection of slip shear bands (SSBs) with Lomer-Cottrell locks (LCLs) are the potential damage locations, which are most likely to form in the near [001]//LD grains. The advanced. XRD with ability of spatially quantify the localized strains/fine orientations opens new opportunities for understanding the microscopic mechanisms of damage and failure in bulk materials.},
doi = {10.1088/1757-899X/375/1/012029},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {1}
}

Conference:
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