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Effect of machining parameters and cutting edge geometry on surface integrity of high-speed turned Inconel 718

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Title Effect of machining parameters and cutting edge geometry on surface integrity of high-speed turned Inconel 718
 
Creator PAWADE, RS
JOSHI, SS
BRAHMANKAR, PK
 
Subject tool life
superalloy
machinability
roughness
carbide
718(tm)
alloys
high-speed turning
residual stress
degree of work hardening
microhardness
edge geometry
surface integrity
 
Description Stringent control on the quality of machined surface and sub-surface during high-speed machining of Inconel 718 is necessary so as to achieve components with greater reliability and longevity. This paper extends the present trend prevailing in the literature on surface integrity analysis of superalloys by performing a comprehensive investigation to analyze the nature of deformation beneath the machined surface and arrive at the thickness of machining affected zone (MAZ). The residual stress analysis, microhardness measurements and degree of work hardening in the machined sub-surfaces were used as criteria to obtain the optimum machining conditions that give machined surfaces with high integrity. It is observed that the highest cutting speed, the lowest feedrate, and the moderate depth of cut coupled with the use of honed cutting edge can ensure induction of compressive residual stresses in the machined surfaces, which in turn were found to be free of smeared areas and adhered chip particles. (C) 2007
 
Publisher ELSEVIER SCI LTD
 
Date 2011-07-22T01:31:47Z
2011-12-26T12:52:14Z
2011-12-27T05:39:20Z
2011-07-22T01:31:47Z
2011-12-26T12:52:14Z
2011-12-27T05:39:20Z
2008
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 48(1), 15-28
0890-6955
http://dx.doi.org/10.1016/j.ijmachtools.2007.08.004
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6062
http://hdl.handle.net/10054/6062
 
Language en