Plastic Behaviour of Green Powder Metallurgical Compacts

Jose Manuel Prado

doi:10.4028/www.scientific.net/MSF.534-536.305

Paper Titles

Green Body Behaviour of High Velocity Pressed Metal Powder
p.289

High Velocity Compaction : Overview of Materials, Applications and Potential
p.293

Investigation of Mechanical Properties of Powder Metallurgy Parts with Control of Microstructure
p.297

Numerical Simulation of Cold Compaction of 3D Granular Packings
p.301

Plastic Behaviour of Green Powder Metallurgical Compacts
p.305

Reduced Weight Scatter with Bonded Powder Mixes
p.309

Segregation-Free Premixes for Increased Productivity and Improved Performance
p.313

Surface Densification Coupled with Higher Density Processes Targeting High-Performance Gearing
p.317

The Application of P/M Advanced Techniques to Sintered Gears
p.321

HomeMaterials Science ForumMaterials Science Forum Vols. 534-536Plastic Behaviour of Green Powder Metallurgical...

Plastic Behaviour of Green Powder Metallurgical Compacts

Abstract:

The results of monotonic and cyclic uniaxial compression tests, in which the deviatoric component of the stress is predominant, carried out on green and recrystallized iron compacts with different levels of density are presented and discussed in order to analyse the macro and micromechanisms governing the mechanical behaviour of non-sintered PM materials. The plastic deformation of the particles, especially at the contact areas between neighbouring particles, produces an internal friction responsible for the main features observed in the behaviour of green metallic compacts. These experimental results show important discrepancies with the plasticity models, Cam-Clay and Drucker-Prager Cap, used to simulate the powder compaction stage. Possible causes for these discrepancies are pointed out.

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Materials Science Forum (Volumes 534-536)

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305-308

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https://doi.org/10.4028/www.scientific.net/MSF.534-536.305

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Online since:

January 2007

Authors:

Jose Manuel Prado

Keywords:

Granular Material, Mechanical Behavior, Plastic Behaviour, Powder Metallurgy (PM)

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