Abstract
Asymmetric rolling , i.e., upper and lower rolls having different circumferential speeds, is a novel technique to improve the ductility of Mg alloys . A newly developed TZ73 Mg alloy was squeeze cast, homogenized at 300 °C for 24 h, rolled at 350 °C by symmetric and asymmetric rolling , and annealed at 215 °C for 30 min. The microstructure was characterized by X-ray diffraction , scanning electron microscope equipped with energy-dispersive X-ray spectroscopy and electron backscattered diffraction . A weakening of basal texture with a concomitant increase in ductility was observed for asymmetrically rolled sheet while retaining the same strength as in symmetrically rolled sheet. Thus, tensile properties of 0.2% PS = 290 MPa, UTS = 332 MPa and El = 13% in hot rolled, and 0.2% PS = 182 MPa, UTS = 282 MPa and El = 21% in annealed condition were obtained for asymmetrically rolled sheet, which are extremely good for a rolled Mg alloy sheet.
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References
B.L. Mordike, T. Ebert, Magnesium Properties - applications - potential, Mater. Sci. Eng. A (2001). https://doi.org/10.1016/s0921-5093(00)01351-4.
E. Aghion, B. Bronfin, D. Eliezer, The role of the magnesium industry in protecting the environment, J. Mater. Process. Technol. 117 (2001) 381–385. https://doi.org/10.1016/s0924-0136(01)00779-8.
E. Aghion, B. Bronfin, Magnesium Alloys Development towards the 21st Century, Mater. Sci. Forum. 350–351 (2000) 19–30. https://doi.org/10.4028/www.scientific.net/msf.350-351.19.
B. Beausir, S. Biswas, D.I. Kim, L.S. Tóth, S. Suwas, Analysis of microstructure and texture evolution in pure magnesium during symmetric and asymmetric rolling, Acta Mater. 57 (2009) 5061–5077. https://doi.org/10.1016/j.actamat.2009.07.008.
R.K. Sabat, S.K. Sahoo, D. Panda, U.K. Mohanty, S. Suwas, Orientation dependent recrystallization mechanism during static annealing of pure magnesium, Mater. Charact. 132 (2017) 388–396. https://doi.org/10.1016/j.matchar.2017.09.003.
S.V.S. Narayana Murty, N. Nayan, R. Madhavan, S.C. Sharma, K.M. George, S. Suwas, Analysis of Microstructure and Texture Evolution in Mg-3Al-1Zn Alloy Processed Through Groove Rolling, J. Mater. Eng. Perform. 24 (2015) 2091–2098. https://doi.org/10.1007/s11665-015-1459-4.
T.T. Sasaki, K. Yamamoto, T. Honma, S. Kamado, K. Hono, A high-strength Mg–Sn–Zn–Al alloy extruded at low temperature, Scr. Mater. 59 (2008) 1111–1114. https://doi.org/10.1016/j.scriptamat.2008.07.042.
H. Liu, Y. Chen, Y. Tang, S. Wei, G. Niu, The microstructure, tensile properties, and creep behavior of as-cast Mg-(1–10)%Sn alloys, J. Alloys Compd. 440 (2007) 122–126. https://doi.org/10.1016/j.jallcom.2006.09.024.
Y.K. Kim, S.W. Sohn, D.H. Kim, W.T. Kim, D.H. Kim, Role of icosahedral phase in enhancing the strength of Mg–Sn–Zn–Al alloy, J. Alloys Compd. 549 (2013) 46–50. https://doi.org/10.1016/j.jallcom.2012.09.050.
S. Biswas, D.-I. Kim, S. Suwas, Asymmetric and symmetric rolling of magnesium: Evolution of microstructure, texture and mechanical properties, Mater. Sci. Eng. A 550 (2012) 19–30. https://doi.org/10.1016/j.msea.2012.03.099.
H. Watanabe, T. Mukai, K. Ishikawa, Effect of temperature of differential speed rolling on room temperature mechanical properties and texture in an AZ31 magnesium alloy, J. Mater. Process. Technol. (2007) 644–647. https://doi.org/10.1016/j.jmatprotec.2006.08.010.
S.-H. Kim, B.-S. You, C. Dong Yim, Y.-M. Seo, Texture and microstructure changes in asymmetrically hot rolled AZ31 magnesium alloy sheets, Mater. Lett. 59 (2005) 3876–3880. https://doi.org/10.1016/j.matlet.2005.07.024.
B. Radhakrishnan, S.B. Gorti, G.M. Stoica, G. Muralidharan, A.D. Stoica, X.-L. Wang, E.D. Specht, E. Kenik, T. Muth, Mesoscale Modeling and Validation of Texture Evolution during Asymmetric Rolling and Static Recrystallization of Magnesium Alloy AZ31B, Metall. Mater. Trans. A 43 (2012) 1509–1516. https://doi.org/10.1007/s11661-011-0896-4.
W.J. Kim, J.B. Lee, W.Y. Kim, H.T. Jeong, H.G. Jeong, Microstructure and mechanical properties of Mg–Al–Zn alloy sheets severely deformed by asymmetrical rolling, Scr. Mater. 56 (2007) 309–312. https://doi.org/10.1016/j.scriptamat.2006.09.034.
E. Tolouie, R. Jamaati, Asymmetric cold rolling: A technique for achieving non-basal textures in AZ91 alloy, Mater. Lett. 249 (2019) 143–146. https://doi.org/10.1016/j.matlet.2019.04.087.
S.-B. Kang, B.-K. Min, H.-W. Kim, D.S. Wilkinson, J. Kang, Effect of asymmetric rolling on the texture and mechanical properties of AA6111-aluminum sheet, Metall. Mater. Trans. A 36 (2005) 3141–3149. https://doi.org/10.1007/s11661-005-0085-4.
N. El Mahallawy, A. Ahmed Diaa, M. Akdesir, H. Palkowski, Effect of Zn addition on the microstructure and mechanical properties of cast, rolled and extruded Mg–6Sn–xZn alloys, Mater. Sci. Eng. A 680 (2017) 47–53. https://doi.org/10.1016/j.msea.2016.10.075.
W. Cheng, Q. Tian, H. Yu, B.S. You, H. Wang, Optimum parameters and kinetic analysis for hot working of a homogenized Mg–8Sn–1Al–1Zn alloy, Mater. Des. 85 (2015) 762–770. https://doi.org/10.1016/j.matdes.2015.07.047.
Y.G. Ko, J. Suharto, J.S. Lee, B.H. Park, D.H. Shin, Effect of Roll Speed Ratio on Deformation Characteristics of IF Steel Subjected to Differential Speed Rolling, Met. Mater. Int. 19 (2013) 603–609. https://doi.org/10.1007/s12540-013-3033-7.
Y. Wang, J. Huang, Texture analysis in hexagonal materials, Mater. Chem. Phys. 81 (2003) 11–26. https://doi.org/10.1016/s0254-0584(03)00168-8.
R.K. Nadella, I. Samajdar, G. Gottstein, Static Recrystallisation and Textural Changes, Magnesium: Proceedings of the 6th International Conference Magnesium Alloys and Their Applications (2005) 1052–1057. https://doi.org/10.1002/3527603565.ch163.
J.F. Humphreys, Nucleation in Recrystallization, Mater. Sci. Forum. 467–470 (2004) 107–116. https://doi.org/10.4028/www.scientific.net/msf.467-470.107.
R.K. Sabat, N. Bibhanshu, G.S. Avadhani, S. Kumar, S. Kandalam, S. Suwas, Superplasticity in high temperature magnesium alloy WE43, Mater. Sci. Eng. A 687 (2017) 85–92. https://doi.org/10.1016/j.msea.2016.12.129.
A.N. Doğruoğlu, On constructing kinematically admissible velocity fields in cold sheet rolling, J. Mater. Process. Technol. 110 (2001) 287–299. https://doi.org/10.1016/s0924-0136(00)00897-9.
J. Sidor, A. Miroux, R. Petrov, L. Kestens, Microstructural and crystallographic aspects of conventional and asymmetric rolling processes, Acta Mater. 56 (2008) 2495–2507. https://doi.org/10.1016/j.actamat.2008.01.042.
Acknowledgements
The authors gratefully acknowledge the financial support from the Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), Government of India. The authors are grateful to Prof. S. Seshan for his help and guidance in squeeze casting.
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Verma, K.K., Suwas, S., Kumar, S. (2020). Asymmetric Rolling of TZ73 Magnesium Alloy to Improve Its Ductility. In: Jordon, J., Miller, V., Joshi, V., Neelameggham, N. (eds) Magnesium Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36647-6_30
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DOI: https://doi.org/10.1007/978-3-030-36647-6_30
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