Neutron diffraction measurements of time-dependent residual stresses generated by severe thermomechanical deformation

W. Woo; Z. Feng; X. L. Wang; C. R. Hubbard

doi:10.1016/j.scriptamat.2009.05.040

Neutron diffraction measurements of time-dependent residual stresses generated by severe thermomechanical deformation

W. Woo, Z. Feng, X. L. Wang, C. R. Hubbard

Materials Joining

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21 Scopus citations

Abstract

Residual stresses were generated by severe thermomechanical deformation in an aluminum alloy plate. The evolution of the residual stresses during natural aging was investigated by neutron diffraction up to 10,000 h. A data reduction method was developed to eliminate microstructure influences (solute variations) on the lattice spacing changes, thereby allowing the determination of the long-range macroscopic residual stresses. The residual stress decreased (∼25 MPa) with time due to the microstructural modification within the deformed region during natural aging.

Original language	English
Pages (from-to)	624-627
Number of pages	4
Journal	Scripta Materialia
Volume	61
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2009.05.040
State	Published - Sep 2009

Keywords

Aluminum alloy
Friction stir welding
Neutron diffraction
Residual stress
Time-dependent

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10.1016/j.scriptamat.2009.05.040

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abstract = "Residual stresses were generated by severe thermomechanical deformation in an aluminum alloy plate. The evolution of the residual stresses during natural aging was investigated by neutron diffraction up to 10,000 h. A data reduction method was developed to eliminate microstructure influences (solute variations) on the lattice spacing changes, thereby allowing the determination of the long-range macroscopic residual stresses. The residual stress decreased (∼25 MPa) with time due to the microstructural modification within the deformed region during natural aging.",

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AU - Wang, X. L.

AU - Hubbard, C. R.

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AB - Residual stresses were generated by severe thermomechanical deformation in an aluminum alloy plate. The evolution of the residual stresses during natural aging was investigated by neutron diffraction up to 10,000 h. A data reduction method was developed to eliminate microstructure influences (solute variations) on the lattice spacing changes, thereby allowing the determination of the long-range macroscopic residual stresses. The residual stress decreased (∼25 MPa) with time due to the microstructural modification within the deformed region during natural aging.

KW - Aluminum alloy

KW - Friction stir welding

KW - Neutron diffraction

KW - Residual stress

KW - Time-dependent

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ER -

Neutron diffraction measurements of time-dependent residual stresses generated by severe thermomechanical deformation

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Keywords

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