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Comparison of microstructures and strengths of an Al-2.5Mg alloy subjected to severe plastic deformation at room and liquid nitrogen temperatures

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Title Comparison of microstructures and strengths of an Al-2.5Mg alloy subjected to severe plastic deformation at room and liquid nitrogen temperatures
 
Creator SINGH, JB
KAPOOR, R
PRASAD, AD
CHAKRAVARTTY, JK
 
Subject Severe plastic deformation (SPD)
Multi-axial Forging (MAF)
Liquid nitrogen temperature
Dislocation density
Yield strength
NANOSTRUCTURED METAL
MECHANICAL-BEHAVIOR
AL
 
Description This work compares microstructural and strength properties of ultra-fine grained Al-2.5Mg alloy produced by multi-axial forging in a channel die at room and liquid nitrogen temperatures. The two ultra-fine grained microstructures after total equivalent strain of 23 exhibited similar grain sizes and orientation spread but significantly different respective strengths at room temperature. The difference in the strengths has been attributed to the higher dislocation densities in samples pressed at liquid nitrogen temperature. Dislocation densities were measured on the basis of average misorientations within grains measured using electron-back scattered diffractions. (C) 2013 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2014-10-15T08:09:27Z
2014-10-15T08:09:27Z
2013
 
Type Article
 
Identifier MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 58126-30
http://dx.doi.org/10.1016/j.msea.2013.05.073
http://dspace.library.iitb.ac.in/jspui/handle/100/14646
 
Language en