Relating Residual Stress and Substructural Evolution During Tensile Deformation of an Aluminum-Manganese Alloy

• DOI: 10.1007/s11661-017-4280-x
• Publication Date: 2017-08-16T15:36:29Z
• Authors: Arijit Lodh; Tawqeer Nasir Tak; Aditya Prakash; P. J. Guruprasad; Christopher Hutch...; Indradev Samajdar
• Keywords: X-Ray-Diffraction; Range Internal-Stresses; Deformed Metal Crystals; Cyclic Deformation; Elastic Strains; 02 engineering and technology; Polycrystalline Copper; Electron Backscatter Diffraction; Plastic-Deformation; Single-Crystals; 669; 0210 nano-technology; Discrete Dislocation Analysis

Interrupted tensile tests were coupled with ex situ measurements of residual stress and microtexture. The residual stress quantification involved measurements of six independent Laue spots and conversion of the interplanar spacings to the residual stress tensor. A clear orientation-dependent residual stress evolution emerged from the experiments and the numerical simulations. For the orientations undergoing negligible changes in ρ GND (density of geometrically necessary dislocation), the residual stress developments appeared to be governed by the elastic stiffness of the grain clusters. For the others, the evolution of the residual stress and ρ GND exhibited a clear orientation-dependent scaling.