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Effects of temperature and strain rate on compressive flow behavior of aluminum-boron carbide composites

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Title Effects of temperature and strain rate on compressive flow behavior of aluminum-boron carbide composites
 
Creator GANGOLU, S
RAO, AG
PRABHU, N
DESHMUKH, VP
KASHYAP, BP
 
Subject Aluminum
metal matrix composite
boron carbide
deformation behavior
METAL-MATRIX COMPOSITES
MECHANICAL-PROPERTIES
ELEVATED-TEMPERATURES
CREEP-BEHAVIOR
AL
B4C
ALLOY
MICROSTRUCTURE
FABRICATION
PARTICLES
 
Description Flow properties of aluminum and aluminum-boron carbide (Al-B4C) composites, containing 5, 10 and 15 wt% B4C, were investigated by compression tests at strain rates of 10(-4), 10(-3) and 10(-2) s(-1) over the temperature range 25 to 500celcius. The nature of stress-strain curves as a function of reinforcement, temperature and strain rate revealed that (1) flow stress initially increases as the reinforcement increases, but it decreases for Al-15% B4C composite, (2) flow stress increases with the increase in strain rate, with the strain rate sensitivity index varying from 0.01 for aluminum at 200celcius to 0.30 for Al-5% B4C composite. The activation energy for deformation is found to vary from 124 to 187 kJ/mol for Al-15% B4C and Al-5% B4C composites, respectively.
 
Publisher SAGE PUBLICATIONS LTD
 
Date 2014-12-28T12:57:25Z
2014-12-28T12:57:25Z
2014
 
Type Article
 
Identifier JOURNAL OF COMPOSITE MATERIALS, 48(11)1313-1321
0021-9983
1530-793X
http://dx.doi.org/10.1177/0021998313485265
http://dspace.library.iitb.ac.in/jspui/handle/100/16631
 
Language English