Study of the True Nature of Microband Boundaries in Aluminum with 3D EBSD

Abstract:

There are two opposing theories regarding the nature of aligned dislocation boundaries generated during plastic deformation of FCC metals: (i) they are oriented along crystallographic planes, and (ii) their alignment is dictated by the macroscopic stress state during plastic deformation. 3D crystallographic orientation data were collected on a volume containing microbands in commercial purity aluminum, and 3D boundaries were reconstructed. Both types of alignment were found in local surface features.

• Periodical: Materials Science Forum (Volumes 702-703)
• Pages: 558-561
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.702-703.558
• Online since: December 2011
• Authors: Lori Bassman, Cassandra George, M. Zakaria Quadir, Nasima Afrin, Ben Yue Liu, Brian Soe, Michael Ferry
• Keywords: 3D Reconstruction, Aluminum (Al), EBSD, Microbands

References

[1] F.J. Humphreys, M. Hatherly, Recrystallization and Related Annealing Phenomena, second ed., Pergamon Press, Oxford, (2004).

[2] D.A. Hughes, N. Hansen, Microstructure and strength of nickel at large strains. Acta Mater. 48 (2000) 2985-3004.

DOI: 10.1016/s1359-6454(00)00082-3

[3] G. Winther, X. Huang, Dislocation Structures. Grain orientation dependence and slip system dependence. Philos. Mag. 87 (2007) 5215-35.

DOI: 10.1080/14786430701591505

[4] P.J. Hurley, F.J. Humphreys, An objective study of substructural boundary alignment in aluminum. Acta Mater. 51 (2003) 4737-50.

DOI: 10.1016/s1359-6454(03)00277-5

[5] F.J. Humphreys, P.S. Bate, Measuring the alignment of low-angle boundaries formed during deformation. Acta Mater. 54 (2006) 817–29.

DOI: 10.1016/j.actamat.2005.10.012

[6] M.Z. Quadir, N. Mateescu, L. Bassman, W. Xu and M. Ferry, Three dimensional study of the structure of microbands in steel. Scripta Mater. 57 (2007) 977-80.

DOI: 10.1016/j.scriptamat.2007.08.012

[7] N. Afrin, M.Z. Quadir, L. Bassman, J.H. Driver, A. Albou, M. Ferry, The three-dimensional nature of microbands in a channel die compressed Goss-oriented Ni single crystal. Scripta Mater. 64 (2011) 221-24.

DOI: 10.1016/j.scriptamat.2010.10.020

[8] F.X. Lin, A. Godfrey, D.J. Jensen, G. Winther, 3D EBSD characterization of deformation structures in commercial purity aluminum. Mater. Charact. 61 (2010) 1203-10.

DOI: 10.1016/j.matchar.2010.07.013

[9] A. Albou, J.H. Driver, C. Maurice, Microband evolution during large plastic strains of stable {110}<112> Al and Al–Mn crystals. Acta Mater. 58 (2010) 3022-34.

DOI: 10.1016/j.actamat.2010.01.034

[10] A.D. Rollett, S.B. Lee, R. Campman, G.S. Rohrer, Three-dimensional characterization of microstructure by electron back-scatter diffraction. Ann. Rev. Mater. Res. 37 (2007) 627-58.

DOI: 10.1146/annurev.matsci.37.052506.084401

[11] K. King, B. Liu, M.Z. Quadir, M. Ferry, L. Bassman, Novel method for identifying low-angle subgrain boundaries. Proceedings of TMS, San Francisco (2009) 669-76.

[12] D'Errico, John, Gridfit: Applicable to Matlab 7. 0. 1 (2005).