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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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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

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