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Title: Mechanical response of stainless steel subjected to biaxial load path changes: Cruciform experiments and multi-scale modeling

In this paper, we propose a multi-scale modeling approach that can simulate the microstructural and mechanical behavior of metal or alloy parts with complex geometries subjected to multi-axial load path changes. The model is used to understand the biaxial load path change behavior of 316L stainless steel cruciform samples. At the macroscale, a finite element approach is used to simulate the cruciform geometry and numerically predict the gauge stresses, which are difficult to obtain analytically. At each material point in the finite element mesh, the anisotropic viscoplastic self-consistent model is used to simulate the role of texture evolution on the mechanical response. At the single crystal level, a dislocation density based hardening law that appropriately captures the role of multi-axial load path changes on slip activity is used. The combined approach is experimentally validated using cruciform samples subjected to uniaxial load and unload followed by different biaxial reloads in the angular range [27º, 90º]. Polycrystalline yield surfaces before and after load path changes are generated using the full-field elasto-viscoplastic fast Fourier transform model to study the influence of the deformation history and reloading direction on the mechanical response, including the Bauschinger effect, of these cruciform samples. Results reveal that themore » Bauschinger effect is strongly dependent on the first loading direction and strain, intergranular and macroscopic residual stresses after first load, and the reloading angle. The microstructural origins of the mechanical response are discussed.« less
Authors:
ORCiD logo [1] ; ORCiD logo [2] ;  [3] ;  [4] ;  [1] ;  [3] ; ORCiD logo [3] ;  [5]
  1. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Photons for Engineering and Manufacturing Group, Lab. for Synchrotron Radiation-Condensed Matter and Photon Science Division
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Indian Inst. of Technology (IIT), Bombay (India). Dept. of Metallurgical Engineering and Materials Science
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Neutrons for Imaging and Activation Group, Lab. for Neutron Scattering and Neutrons and Muons Division
  5. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Photons for Engineering and Manufacturing Group, Lab. for Synchrotron Radiation-Condensed Matter and Photon Science Division; Federal Inst. of Technology, Lausanne (Switzerland). Neutrons and X-rays for Mechanics of Materials and Inst. of Materials (IMX)
Publication Date:
Report Number(s):
LA-UR-18-23867
Journal ID: ISSN 0749-6419
Grant/Contract Number:
AC52-06NA25396; 339245; 06SCPE401DOE-BES
Type:
Accepted Manuscript
Journal Name:
International Journal of Plasticity
Additional Journal Information:
Journal Name: International Journal of Plasticity; Journal ID: ISSN 0749-6419
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; European Research Council (ERC); Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Bauschinger effect; C mechanical testing; C finite elements; B crystal plasticity; A microstructures
OSTI Identifier:
1438102

Upadhyay, Manas V., Patra, Anirban, Wen, Wei, Panzner, Tobias, Van Petegem, Steven, Tome, Carlos N., Lebensohn, Ricardo A., and Van Swygenhoven, Helena. Mechanical response of stainless steel subjected to biaxial load path changes: Cruciform experiments and multi-scale modeling. United States: N. p., Web. doi:10.1016/j.ijplas.2018.05.003.
Upadhyay, Manas V., Patra, Anirban, Wen, Wei, Panzner, Tobias, Van Petegem, Steven, Tome, Carlos N., Lebensohn, Ricardo A., & Van Swygenhoven, Helena. Mechanical response of stainless steel subjected to biaxial load path changes: Cruciform experiments and multi-scale modeling. United States. doi:10.1016/j.ijplas.2018.05.003.
Upadhyay, Manas V., Patra, Anirban, Wen, Wei, Panzner, Tobias, Van Petegem, Steven, Tome, Carlos N., Lebensohn, Ricardo A., and Van Swygenhoven, Helena. 2018. "Mechanical response of stainless steel subjected to biaxial load path changes: Cruciform experiments and multi-scale modeling". United States. doi:10.1016/j.ijplas.2018.05.003. https://www.osti.gov/servlets/purl/1438102.
@article{osti_1438102,
title = {Mechanical response of stainless steel subjected to biaxial load path changes: Cruciform experiments and multi-scale modeling},
author = {Upadhyay, Manas V. and Patra, Anirban and Wen, Wei and Panzner, Tobias and Van Petegem, Steven and Tome, Carlos N. and Lebensohn, Ricardo A. and Van Swygenhoven, Helena},
abstractNote = {In this paper, we propose a multi-scale modeling approach that can simulate the microstructural and mechanical behavior of metal or alloy parts with complex geometries subjected to multi-axial load path changes. The model is used to understand the biaxial load path change behavior of 316L stainless steel cruciform samples. At the macroscale, a finite element approach is used to simulate the cruciform geometry and numerically predict the gauge stresses, which are difficult to obtain analytically. At each material point in the finite element mesh, the anisotropic viscoplastic self-consistent model is used to simulate the role of texture evolution on the mechanical response. At the single crystal level, a dislocation density based hardening law that appropriately captures the role of multi-axial load path changes on slip activity is used. The combined approach is experimentally validated using cruciform samples subjected to uniaxial load and unload followed by different biaxial reloads in the angular range [27º, 90º]. Polycrystalline yield surfaces before and after load path changes are generated using the full-field elasto-viscoplastic fast Fourier transform model to study the influence of the deformation history and reloading direction on the mechanical response, including the Bauschinger effect, of these cruciform samples. Results reveal that the Bauschinger effect is strongly dependent on the first loading direction and strain, intergranular and macroscopic residual stresses after first load, and the reloading angle. The microstructural origins of the mechanical response are discussed.},
doi = {10.1016/j.ijplas.2018.05.003},
journal = {International Journal of Plasticity},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}