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Microstructure and compression behavior of chip consolidated magnesium

DSpace at IIT Bombay

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Field Value
 
Title Microstructure and compression behavior of chip consolidated magnesium
 
Creator ANILCHANDRA, AR
BASU, R
SAMAJDAR, I
SURAPPA, MK
 
Subject HALL-PETCH PARAMETERS
MECHANICAL-PROPERTIES
MG ALLOY
MACHINED CHIPS
HOT EXTRUSION
OXIDE CONTAMINANTS
POWDER-METALLURGY
ROOM-TEMPERATURE
PURE MAGNESIUM
DEFORMATION
 
Description Chips produced by turning a commercial purity magnesium billet were cold compacted and then hot extruded at four different temperatures: 250, 300, 350, and 400 degrees C. Cast billets, of identical composition, were also extruded as reference material. Chip boundaries, visible even after 49: 1 extrusion at 400 degrees C, were observed to suppress grain coarsening. Although 250 degrees C extruded chip-consolidated product showed early onset of yielding and lower ductility, fully dense material (extruded at 400 degrees C) had nearly 40% reduction in grain size with 22% higher yield strength and comparable ductility as that of the reference. The study highlights the role of densification and grain refinement on the compression behavior of chip consolidated specimens.
 
Publisher CAMBRIDGE UNIV PRESS
 
Date 2014-10-17T05:38:26Z
2014-10-17T05:38:26Z
2012
 
Type Article
 
Identifier JOURNAL OF MATERIALS RESEARCH, 27(4)709-719
http://dx.doi.org/10.1557/jmr.2011.411
http://dspace.library.iitb.ac.in/jspui/handle/100/16087
 
Language en