Effect of Rolling Temperature on Microstructure and Mechanical Properties of Cryorolled Al-Mg-Si Alloy Reinforced with 3wt% TiB2 In Situ Composite


Article Preview

The present work investigates the effect of rolling temperature on the mechanical properties and microstructural evolution of an Al-Mg-Si alloy with 3wt% TiB2 in-situ composite that was fabricated by stir casting route. The composite was rolled to a true strain of ≈0.7 at three different temperatures viz; room temperature (RT), liquid propanol (LP) and liquid nitrogen (LN) temperatures. Tensile tests revealed that the samples rolled at liquid nitrogen temperature exhibited improved properties compared to the samples rolled at other two temperatures. A tensile strength and ductility of 291 MPa and 8% respectively were exhibited by the liquid nitrogen rolled sample. The strength is observed to be ≈12% higher and ductility is ≈60% more when compared to the room temperature rolled sample. X ray diffraction peaks indicated that rolled samples exhibited considerable increase in peak broadening compared to the unrolled one, which is attributed to the increase of the lattice strain due to distortion and the decrease in grain size of the material. The enhanced mechanical properties of the liquid nitrogen rolled samples were attributed to the combined effect of grain refinement and accumulation of higher dislocation density.



Edited by:

D. Rajan Babu




B. Gopi et al., "Effect of Rolling Temperature on Microstructure and Mechanical Properties of Cryorolled Al-Mg-Si Alloy Reinforced with 3wt% TiB2 In Situ Composite", Advanced Materials Research, Vol. 584, pp. 556-560, 2012

Online since:

October 2012




[1] S. Kumar, M. Chakraborty, V. Subramanya Sarma, B.S. Murty, Tensile and wear behaviour of in situ Al–7Si/TiB2 particulate composites, Wear 265 (2008) 134-142.

DOI: https://doi.org/10.1016/j.wear.2007.09.007

[2] K. Sivaprasad, S.P. Kumaresh Babu, S. Natarajan, R. Narayanasamy, B. Anil Kumar, G. Dinesh, Study on abrasive and erosive wear behaviour of Al 6063/TiB2 in situ composites, Mater. Sci. Eng. A 498 (2008) 495-500.

DOI: https://doi.org/10.1016/j.msea.2008.09.003

[3] W.H. Cubberly, H. Barker, D. Benjamin, Metals Handbook, ninth ed., American Society for Metals, Materials Park, Ohio, (1979).

[4] M. Zhao, G. Wu, L. Jiang, Z. Dou, Friction and wear properties of TiB2P/Al composite, Compos. Part A 37 (2006) 1916–(1921).

DOI: https://doi.org/10.1016/j.compositesa.2005.12.018

[5] K.L. Tee, L. Lu, M.O. Lai, In situ processing of Al–TiB2 composite by the stir-casting technique, J. Mater. Proc. Technol. 89–90 (1999) 513–519.

DOI: https://doi.org/10.1016/s0924-0136(99)00038-2

[6] S.C. Tjong, Z.Y. Ma, Microstructural and mechanical characteristics of in situ metal matrix composites, Mater. Sci. Eng. R, 29 (2000) 49-113.

[7] N. Naga Krishna, A.K. Akash, K. Sivaprasad, R. Narayanasamy, Studies on void coalescence analysis of nanocrystalline cryorolled commercially pure aluminium formed under different stress conditions, Mater. Des. 31 (2010) 3578-3584.

DOI: https://doi.org/10.1016/j.matdes.2010.01.056

[8] T. Shanmugasundaram, B.S. Murty, V. Subramanya Sarma, Development of ultrafine grained high strength Al-Cu alloy by cryorolling, Scr. Mater. 54 (2006) 2013-(2017).

DOI: https://doi.org/10.1016/j.scriptamat.2006.03.012

[9] V. Subramanya Sarma, K. Sivaprasad, D. Sturm, M. Heilmaier, Microstructure and mechanical properties of ultra fine grained Cu-Zn and Cu-Al alloys produced by cryorolling and annealing, Mater. Sci. Eng. A. 489 (2008) 253-258.

DOI: https://doi.org/10.1016/j.msea.2007.12.016

[10] S.K. Panigrahi, R. Jayaganthan, V. Chawla, Effect of cryorolling on microstructure of Al-Mg-Si alloy, Mater. Lett. 62 (2008) 2626-2629.

DOI: https://doi.org/10.1016/j.matlet.2008.01.003

[11] K. Gopala Krishna, K. Sivaprasad, K. Venkateswarlu, K.C. Hari Kumar, Microstructural evolution and aging behavior of cryorolled Al-4Zn-2Mg alloy, Mater. Sci. Eng. A. Article in Press.

DOI: https://doi.org/10.1016/j.msea.2011.12.052

[12] K. Gopala Krishna, Nidhi Singh, K. Venkateswarlu, K.C. Hari Kumar, Tensile behavior of ultrafine grained Al-4Zn-2Mg alloy produced by cryorolling, J. Mater. Engg. Perform. 20 (2011) 1569-1574.

DOI: https://doi.org/10.1007/s11665-011-9843-1

[13] N. Naga Krishna, K. Sivaprasad, High temperature tensile properties of cryorolled Al-4wt%Cu-3wt%TiB2 in-situ composites, T Indian I Metals, 64 (2011) 63-66.

DOI: https://doi.org/10.1007/s12666-011-0012-x

[14] Y. Wang, M. Chen, F. Zhou, E Ma, High tensile ductility in a nanostructured metal, Nature, 419 (2002) 912-915.

DOI: https://doi.org/10.1038/nature01133

[15] A. Korchef, Y. Champion, N. Njah, X-ray diffraction analysis of aluminium containing Al8Fe2Si processed by equal channel angular pressing, J. Alloys Compd. 427 (2007) 176-182.

DOI: https://doi.org/10.1016/j.jallcom.2006.03.010

[16] V.L. Niranjani, K.C. Hari Kumar, V. Subramanya Sarma, Development of high strength Al-Mg-Si AA6061 alloy through cold rolling and ageing, Mater. Sci. Eng. A. 515 (2009) 169-174.

DOI: https://doi.org/10.1016/j.msea.2009.03.077

[17] S.K. Panigrahi, R. Jayaganthan, A study on the combined treatment of cryorolling, short-annealing and aging for the development of ultrafine-grained Al 6063 alloy with enhanced strength and ductility, Metall. Mater. Trans., A. 41A (2010).

DOI: https://doi.org/10.1007/s11661-010-0328-x

[18] C.S. Ramesh, S. Pramod, R. Keshavamurthy, A study on microstructure and mechanical properties of Al 6061–TiB2 in-situ composites, Mater. Sci. Eng. A 528 (2011) 4125–4132.

DOI: https://doi.org/10.1016/j.msea.2011.02.024