Deconvoluting the influences of heat and plastic deformation on internal strains generated by friction stir processing

Wanchuck Woo; Hahn Choo; Donald W. Brown; Mark A.M. Bourke; Zhili Feng; Stan A. David; Camden R. Hubbard; Peter K. Liaw

doi:10.1063/1.1944207

Deconvoluting the influences of heat and plastic deformation on internal strains generated by friction stir processing

Wanchuck Woo, Hahn Choo, Donald W. Brown, Mark A.M. Bourke, Zhili Feng, Stan A. David, Camden R. Hubbard, Peter K. Liaw

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Abstract

Internal-strain profiles in friction-stir processed aluminum-alloy plates were investigated using neutron diffraction. Three different specimens were prepared with a purpose of separating the effects of frictional heating and severe plastic deformation on the internal-strain distribution: (Case 1) a plate processed with both stirring pin and tool shoulder, (Case 2) a plate processed only with the tool shoulder, and (Case 3) a plate processed only with the pin. The comparison between Cases 1 and 2 shows distinctly different strain profiles revealing deconvoluted effects of the different sources (i.e., heat, deformation, or the combination) on the internal strains generated during the friction-stir processing.

Original language	English
Article number	231902
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	86
Issue number	23
DOIs	https://doi.org/10.1063/1.1944207
State	Published - Jun 6 2005

Funding

This work is supported by the NSF International Materials Institutes (IMI) Program under contract DMR-0231320, with Dr. C. Huber as the program director. This work has benefited from the use of the Los Alamos Neutron Science Center at the Los Alamos National Laboratory. This facility is funded by the US Department of Energy under Contract W-7405-ENG-36. The research was also sponsored by the Assistant Secretary for Energy Efficiency and Renewable Energy, Office of FreedomCAR and Vehicle Technologies, as part of the High Temperature Materials Laboratory User Program, Oak Ridge National Laboratory, managed by UT-Battle, LLC, for the U.S. Department of Energy under contract number DE-AC05-00OR22725. The authors would like to thank A. Frederick and T. Sisneros for their help during the friction-stir processing and neutron-diffraction measurements, respectively.

Funders	Funder number
NSF International Materials Institutes
Office of FreedomCar
U.S. Department of Energy	DE-AC05-00OR22725, W-7405-ENG-36
Office of Energy Efficiency and Renewable Energy
Oak Ridge National Laboratory
Innovative Medicines Initiative	DMR-0231320

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abstract = "Internal-strain profiles in friction-stir processed aluminum-alloy plates were investigated using neutron diffraction. Three different specimens were prepared with a purpose of separating the effects of frictional heating and severe plastic deformation on the internal-strain distribution: (Case 1) a plate processed with both stirring pin and tool shoulder, (Case 2) a plate processed only with the tool shoulder, and (Case 3) a plate processed only with the pin. The comparison between Cases 1 and 2 shows distinctly different strain profiles revealing deconvoluted effects of the different sources (i.e., heat, deformation, or the combination) on the internal strains generated during the friction-stir processing.",

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AU - David, Stan A.

AU - Hubbard, Camden R.

AU - Liaw, Peter K.

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AB - Internal-strain profiles in friction-stir processed aluminum-alloy plates were investigated using neutron diffraction. Three different specimens were prepared with a purpose of separating the effects of frictional heating and severe plastic deformation on the internal-strain distribution: (Case 1) a plate processed with both stirring pin and tool shoulder, (Case 2) a plate processed only with the tool shoulder, and (Case 3) a plate processed only with the pin. The comparison between Cases 1 and 2 shows distinctly different strain profiles revealing deconvoluted effects of the different sources (i.e., heat, deformation, or the combination) on the internal strains generated during the friction-stir processing.

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Deconvoluting the influences of heat and plastic deformation on internal strains generated by friction stir processing

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