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Influence of cooling rate on the amount of graphite nodules and interlamelar space in perlite phase in a ductile iron

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Title Influence of cooling rate on the amount of graphite nodules and interlamelar space in perlite phase in a ductile iron
 
Creator Benavides-Treviño, J R
Perez-Gonzalez, F A
Hernandez, M A L
Garcia, E
Juarez-Hernandez, A
 
Subject Ductil iron
Solidification
Graphite nodules
Scanning electron microscopy
 
Description 330-334
The microstructures of a ductile iron solidified under six different cooling rates have been studied, using optical microscopy (OM), scanning electron microscopy (SEM) and tensile test. Results show that cooling rates increase from 0.58 to 0.95°C/s, so perlite growth temperature (<em>T</em><sub>PG</sub>) decreases, nodules size (<em>N</em>) decreases and nodules per volume (<em>N</em><sub>v</sub>) increases. Perlite interlamellar spacing (λ) between cementite and ferrite, shows no significant change. Finally, as cooling rate increases, yield and tensile strengths increase, but the hardness shows a minimum increase.
 
Date 2018-10-23T10:46:46Z
2018-10-23T10:46:46Z
2018-08
 
Type Article
 
Identifier 0975-1017 (Online); 0971-4588 (Print)
http://nopr.niscair.res.in/handle/123456789/45261
 
Language en_US
 
Rights <img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
 
Publisher NISCAIR-CSIR, India
 
Source IJEMS Vol.25(4) [August 2018]