Please use this identifier to cite or link to this item: http://idr.nitk.ac.in/jspui/handle/123456789/11767
Title: Investigation of Microstructure and Mechanical Properties of ECAP-Processed AM Series Magnesium Alloy
Authors: Gopi, K.R.
Nayaka, H.S.
Sahu, S.
Issue Date: 2016
Citation: Journal of Materials Engineering and Performance, 2016, Vol.25, 9, pp.3737-3745
Abstract: Magnesium alloy Mg-Al-Mn (AM70) was processed by equal channel angular pressing (ECAP) at 275 C for up to 4 passes in order to produce ultrafine-grained microstructure and improve its mechanical properties. ECAP-processed samples were characterized for microstructural analysis using optical microscopy, scanning electron microscopy, and transmission electron microscopy. Microstructural analysis showed that, with an increase in the number of ECAP passes, grains refined and grain size reduced from an average of 45 to 1 m. Electron backscatter diffraction analysis showed the transition from low angle grain boundaries to high angle grain boundaries in ECAP 4 pass sample as compared to as-cast sample. The strength and hardness values an showed increasing trend for the initial 2 passes of ECAP processing and then started decreasing with further increase in the number of ECAP passes, even though the grain size continued to decrease in all the successive ECAP passes. However, the strength and hardness values still remained quite high when compared to the initial condition. This behavior was found to be correlated with texture modification in the material as a result of ECAP processing. 2016, ASM International.
URI: http://idr.nitk.ac.in/jspui/handle/123456789/11767
Appears in Collections:1. Journal Articles

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