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Fabrication of AA5182-Semis for Precise Components

Prantik Mukhopadhyay


Al4.5MgMn alloy is known to show an excellent physical and mechanical properties as well as manufacturing and fabrication ease as semis, suitable for making precise components like hull of the light weight vehicles and seamless tubes. Present work has tried to describe the development of microstructure and texture of an industrial tandem hot rolled Al4.5MgMn alloy sheet after laboratory cold rolling and annealing. Crystallographic orientation dependent strengthening rate has been formulated. Dynamic recovery islets analogous to dislocation cells are formed in deformed zones surrounding dispersoid particles, after cold rolling. Size of dynamic recovery islets, formed in deformed zones, has been derived. Annealing revealed an intrinsic constitutive trend of discontinuous and continuous recrystallization. Comparatively strain free grains formed during discontinuous recrystallization, predominantly from dispersoid particles at grain boundaries, with random crystallographic texture. Crystallographic texture revealed that normal direction, ND, rotated Cube grains were developed due to oriented growth of  boundaries. Gradual recovery of the {011}|| ND, -fibre, extended with time, has been found during annealing at 573K. Crystallographic feasibility of  boundary development between well-known crystallographic orientations has been postulated.


Al4.5MgMn; Cold Rolling; Annealing; Deep Drawing; Electron Microscopy, Microstructure; Texture; Grain boundaries, Discontinuous and continuous Recrystallization

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Doig, A. Military Metallurgy, Maney, London, UK, 1998, p 67.

Ilangovan, M.; Boopathy, S. R. and Balasubramanian, V. Effect of tool pin profile on microstructure and tensile properties of friction stir welded dissimilar AA6061-AA5086 aluminium alloy joints. Defence Technology, 2015, 11, 174-184.

Rambabu, G; Balajinaik, G. D.; Rao, C. H. V.; Rao, K. S. and Reddy, G. M. Optimization of friction stir welding parameters for improved corrosion resistance of AA2219 aluminum alloy joints. Defence Technology, 2015, 11, 330-337.

Suarez-Romero, J. G.; Tepichín-Rodríguez, E.; Secundino-Palma, E. and Hernández-Gómez, E. Steel hardness and their optical properties, in: Gu, Z. H. & Hanssen, L. M. (Eds.), Reflection, Scattering and Diffraction from Surfaces, Proc. of SPIE, 2008, 7065, 706512, 1-10.

Madhu, V. and Balakrishna, T.V. Armour Protection and Affordable Protection for Futuristic Combat Vehicles. Def. Sci. J., 2011, 61 (4), 394-402.

Dieter, G. Mechanical Metallurgy, SI Metric Ed. McGraw-Hill, London, 1988, p 102.

Humphrey, F.J. and Hatherly, M. Recrystallization and Related Annealing Phenomena, 2nd Ed. Elsevier, Oxford, 2004, p 67.

Chowdhury, S.G. Development of texture during cold rolling in AA5182 alloy, Scripta Mater. 2005, 52, 99-105.

Mukhopadhyay, P. Recrystallization microstructure modelling from superimposed deformed microstructure on microstructure model, Bul. Mater. Sci. Indian Academy of Sciences, 2009, 32 (4), 415-420.

Cheng, X. M. and Morris, J.G. Texture, microstructure and formability of SC and DC cast Al–Mg alloys, Mater. Sci. Engg. A, 2002, 323, 32-41.

Liu, W.C. and Morris, J.G. Comparison of the texture evolution in cold rolled DC and SC AA 5182 aluminum alloys, Mater. Sci. Engg. A, 2003, 339, 183-193.

Vatne, H.E.; Furu, T; Orsund, R. and Nes, E. Modelling recrystallization after hot deformation of aluminium, Acta mater., 1996, 44 (11), 4463-4473.

Huh, M.Y.; Cho, S.Y. and Engler, O. Randomization of the annealing texture in aluminum 5182 sheet by cross-rolling, Mater. Sci. Engg. A, 2001, 315, 35-46.

Mukhopadhyay, P.; Biswas, S. and Chokshi, A.H. Deformation characterization of superplastic AA7475 alloy, Trans. Indian Inst. Met., 2009, 62 (2), 149-152.

Mukhopadhyay, P. Simulation of recrystallization textures of AA 5182 and AA3104 with experimental validation, Aluminium, 2002, 78, 912-917.

Mukhopadhyay, P. Ph.D Thesis, RWTH Aachen University, Germany, 2005.

Sarkar, S.; Wells, M.A. and Poole W.J. Softening behaviour of cold rolled continuous cast and ingot cast aluminum alloy AA5754, Mater. Sci. Engg. A, 2006, 421, 276-285.

Wanhill, R.J.W. Texture effects in important aerospace materials, in: Prasad, N. and Wanhill, R. (Eds.), Aerospace materials and material technologies, Indian Institute of Metals, Springer, Singapore, 2016.

Mukhopadhyay, P.; Kannaki, P.S.; Srinivas, M. and Roy, M. Microstructural developments during abrasion of M50 bearing steel, Wear, 2014, 315, 31-37.

Hull, D. and Bacon, D.J. Introduction to dislocations, 5th Edition, Elsevier, London, 2011, p 167.

Mukhopadhyay, P.; Leock, M. and Gottstein, G. A cellular operator model for the simulation of static recrystallization, Acta Mater., 2007, 55, 551-564.

Sebald, R. and Gottstein, G. Modeling of recrystallization textures, interaction of nucleation and growth, Acta Mater., 2002, 50, 1587-1598.

Hagos, S.; Verma, A.K.; Mukhopadhyay, P. and Singh, A.K. Contribution of Process Annealing on the Development of Microstructure and Texture of Cu-30Zn Brass, 382534, 2013,

Verma A. K.; Shingweker A,; Nihichlani M.; Singh V. and Mukhopadhyay P. Deformation characterization of cartridge brass, Indian Journal of Engineering and Materials Science, 2013, 20, 283-288.

Brandon, D.G. The structure of high-angle grain boundaries, Acta Metall., 1966, 14, 1479-1484.



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