Plastic Behaviour of Green Powder Metallurgical Compacts
| Periodical | Materials Science Forum (Volumes 534 - 536) |
|---|---|
| Main Theme | Progress in Powder Metallurgy |
| Edited by | Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim |
| Pages | 305-308 |
| DOI | 10.4028/www.scientific.net/MSF.534-536.305 |
| Citation | Jose Manuel Prado, 2007, Materials Science Forum, 534-536, 305 |
| Online since | January, 2007 |
| Authors | Jose Manuel Prado |
| Keywords | Granular Material, Mechanical Behaviour, Plastic Behaviour, Powder Metallurgy (PM) |
| Price | US$ 28,- |
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.
