Evaluation of Deformation and Densification Behavior in Sintered Fe-0.8%C-1.0%Mo Steel Preforms

Ananthanarayanan, Rajeshkannan and Pandey, K.S. and Shanmugam, S. (2009) Evaluation of Deformation and Densification Behavior in Sintered Fe-0.8%C-1.0%Mo Steel Preforms. [Conference Proceedings]

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Abstract

Present investigation is aimed to evaluate the densification behaviour of sintered iron-carbon-molybdenum powder metallurgy steel system under the influence of two different heights – to – diameter ratio, namely 0.40 and 0.75 respectively. The sintered preforms are produced by proper selection of aforementioned materials and mixed in a
proportion to yield Fe-0.8%C-1.0%Mo, which were blended
to achieve a homogenous mix using pot mill. These powder
mixes are consolidated on a suitable die set assembly to
make a cylindrical shape of preform of two different aspect
ratios using 100tons capacity hydraulic press. Further, the
green compacts are sintered and are subjected to cold
deformation operation. Incremental step of loadings were
applied on the preform under dry friction condition. The
critical evaluation of compressive deformation, which
contributing for the densification of material reveals that
induced strain are linearly contributing to enhance
densification till the specimen fracture; however overall
resistance to deformation of material is exhibiting in three different responses with respect to enhancement in
densification. That is at initially, high resistance to
deformation followed by high kinetics of deformation and
finally exhibiting little resistance against overall
deformation. Although, the aforementioned criteria is
common for both the aspect ratios, the applied deformation
is little homogeneous when aspect ratio is less that directly contributes to enhance the rate of attainment of densification as little faster.

Item Type:	Conference Proceedings
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
Depositing User:	Rajeshkannan Ananthanarayanan
Date Deposited:	13 Mar 2019 22:46
Last Modified:	13 Mar 2019 22:46
URI:	https://repository.usp.ac.fj/id/eprint/11355

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