Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.matdes.2012.11.028
Title: Study on hot deformation behavior and microstructure evolution of cast-extruded AZ31B magnesium alloy and nanocomposite using processing map
Authors: Srinivasan, M.
Loganathan, C.
Narayanasamy, R.
Senthilkumar, V.
Nguyen, Q.B. 
Gupta, M. 
Keywords: A. Nano-material
C. Forming
F. Microstructure
Issue Date: May-2013
Citation: Srinivasan, M., Loganathan, C., Narayanasamy, R., Senthilkumar, V., Nguyen, Q.B., Gupta, M. (2013-05). Study on hot deformation behavior and microstructure evolution of cast-extruded AZ31B magnesium alloy and nanocomposite using processing map. Materials and Design 47 : 449-455. ScholarBank@NUS Repository. https://doi.org/10.1016/j.matdes.2012.11.028
Abstract: The hot deformation behavior and microstructural evolution of cast-extruded AZ31B magnesium alloy and nanocomposite have been studied using processing-maps. Compression tests were conducted in the temperature range of 250-400°C and strain rate range of 0.01-1.0s-1. The three-dimensional (3D) processing maps developed in this work, describe the variations of the efficiency of power dissipation and flow instability domains in the strain rate (ε̇) and temperature (T) space. The deformation mechanisms namely dynamic recrystallization (DRX), dynamic recovery (DRY) and instability regions were identified using processing maps. The deformation mechanisms were also correlated with transmission electron microscopy (TEM) and optical microscopy (OM). The optimal region for hot working has been observed at a strain rate (ε̇) of 0.01s-1 and the temperature (T) of 400°C for both magnesium alloy and nanocomposite. Few instability regimes have been identified in this study at higher strain rate (ε̇) and temperature (T). The stability domains have been identified in the lower strain rate regimes. © 2012 Elsevier Ltd.
Source Title: Materials and Design
URI: http://scholarbank.nus.edu.sg/handle/10635/85693
ISSN: 02613069
DOI: 10.1016/j.matdes.2012.11.028
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