The Occurrence of a Peripheral Coarse Grain Zone (PCGZ) in Extruded Bars of AA 7108

Saul Hissaci de Souza; Ronald Lesley Plaut; Nelson B. Lima; Rene Ramos de Oliveira; Angelo Fernando Padilha

doi:10.4028/www.scientific.net/MSF.1016.1141

Paper Titles

Microstructure Development in the Bonding Zone of Explosively Welded Ti and Cu Sheets
p.1114

Effect of Nano Sodium Titanate Whisker and Aramid Pulp on the Friction and Wear Behavior of Resin-Based Brake Material
p.1121

Effect of Nb on the Austenite Microstructural Homogeneity of Hot Rolled Rebars
p.1127

The Influence of the Sintering Temperature on the Properties of the 0.98Pb(Zr_1-xTi_x)O₃ - 0.02La(Fe³⁺_0.5, Nb⁵⁺_0.5)O₃ Ceramic Systems
p.1134

The Occurrence of a Peripheral Coarse Grain Zone (PCGZ) in Extruded Bars of AA 7108
p.1141

Microstructure after Solution Annealing of the Nuclear Grade Austenitic Stainless Steel DIN 1.4970
p.1147

Application of Image Analysis Method Combined with Microhardness Measurement to Determine Phase Fractions
p.1153

Stability of Ordered B2-β_O and Disordered BCC-β Phases in Tial - A First Principles Study
p.1159

The Influence of Process Parameters on Structure of YSZ Coating Deposited by Plasma Spraying on AISI 316L Stainless Steel Surface by APS Method and on Ti6Al4V Titanium Alloy Surface by PS-PVD Method
p.1166

HomeMaterials Science ForumMaterials Science Forum Vol. 1016The Occurrence of a Peripheral Coarse Grain Zone...

The Occurrence of a Peripheral Coarse Grain Zone (PCGZ) in Extruded Bars of AA 7108

Abstract:

Industrial-scale extruded profiles of AA 7108 with a rectangular section (25.60 mm x 15.95 mm) were used in this investigation. Some complementary microstructural analysis techniques, such as polarized light microscopy, EBSD (Electron Backscatter Diffraction) and X-ray diffraction were used to characterize the microstructure, focusing on the PCG zone. It was observed that the extruded profiles presented a totally recrystallized microstructure and a 300 μm layer of peripheral coarse grains. Additionally, the results showed that the PCGZ predominant grain orientation {311} <110> differs from the texture below the PCGZ (Goss and Cube components).

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 1016)

Pages:

1141-1146

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1016.1141

Citation:

Cite this paper

Online since:

January 2021

Authors:

Saul Hissaci de Souza, Ronald Lesley Plaut*, Nelson B. Lima, Rene Ramos de Oliveira, Angelo Fernando Padilha

Keywords:

AA 7108, Aluminum Alloy, Crystallographic Texture, Microstructure, PCGZ

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] Y. Birol, Impact of partial recrystallization on the performance of 6005A tube extrusions. Engineering Failure Analysis, 17 (2010) 1110–1116.

DOI: 10.1016/j.engfailanal.2010.01.006

Google Scholar

[2] E. D. Sweet, et al, Effects of extrusion parameters on Coarse Grain Surface Layer. Proceedings of the 8th Internacional Aluminum Extrusion Technology Seminar, 1(2004) 115–126.

Google Scholar

[3] P. Kazanowski, et al, Mechanical and microstructural performance of convex dies in axisymmetric extrusion - Theory and experimental verification. Materials Science and Engineering A, 404(2005) 235–243.

DOI: 10.1016/j.msea.2005.05.076

Google Scholar

[4] W. H. Van Geertruyden, et al, Evolution of Surface Recrystallization during Indirect Extrusion of 6xxx Aluminum Alloys, Metallurgical and Materials Transactions A, 36 (2005) 1049–1056.

DOI: 10.1007/s11661-005-0298-6

Google Scholar

[5] C. Bandini et al. , Development and Validation of a Dynamic and Static Recrystallization Model for the Microstructural Prediction of AA6060 Aluminum Alloy with Qform, 11th International Aluminum Extrusion Technology Seminar (ET2016), Chicago IL, USA. May 3-6, 2016. Conference proceedings vol. 1, p.789 – 800.

Google Scholar

[6] J. de P. Martins, Microstructural characterization of a commercial 3003 aluminum alloy produced by twin roll caster - crystallographic texture, Revista Escola de Minas, 60 (2007) 565 – 569.

DOI: 10.1590/s0370-44672007000300019

Google Scholar

[7] B. D. Cullity, Elements of X-ray Diffraction, second ed., Addison-Wesley Publishing Company, Massachusetts, (1978).

Google Scholar

[8] H Jürgen, Texture Evolution During Rolling of Aluminum Alloys, TMS Light Metals, (2008) 1071-1077.

Google Scholar

[9] M. Khadyko, S. Dumoulin, O.S. Hopperstad, Texture Gradients and Strain Localisation in Extruded Aluminium Profile, International Journal of Solids and Structures, 97 (2016) 239–255.

DOI: 10.1016/j.ijsolstr.2016.07.024

Google Scholar