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Experimental and numerical studies of metallic powders subjected to cold isostatic pressing

  • A. Kadir Eksi , Mustafa Laman , D. Ali Bircan and Ahmet Demir
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 102 Issue 5

Abstract

The cold isostatic pressing behaviour of aluminium and iron powders was analysed, both experimentally using a cold isostatic pressing unit, and numerically using a nonlinear finite element program. The pressing unit, which can withstand up to 650 MPa pressure was designed and constructed in this study. Aluminium and iron powders, having different hardness values and almost the same particle sizes, have been pressed in the pressure unit and the mechanical behaviours of these powders were investigated in the 100−500 MPa pressure range. Attained densities were about 98% for aluminium and 88% for iron powders. Pressing resulted in significant increases in microhardnesses of the aluminium and iron powders. Light and scanning electron microscopy examinations revealed that severe plastic deformation took place in the powders of aluminium and iron. The densification behaviour of aluminium and iron powders under the cold isostatic pressing was also analysed using the finite element method, in which an elastoplastic model was used to represent the powders. The relationship between the relative density of powder sample and applied pressure was predicted from finite element analysis and compared with the experimental data. A very good agreement between finite element results and experimental data was observed during the cold isostatic pressing.

Keywords: Cold isostatic pressing (CIP); Iron and aluminium powders; Densification and hardness; Finite element method; Hardening soil model
* Correspondence address, Dr. Durmusş Ali Bircan Cukurova University Mech. Eng Depth. 01330 Balcali Saricam Adana, Turkey Tel.: +90 322 338 6084/2722 +90 542 815 0170 (mobil) Fax: +90 322 338 6126 E-mail:

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Received: 2010-8-23
Accepted: 2011-2-24
Published Online: 2013-06-11
Published in Print: 2011-05-01

© 2011, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110503
Keywords for this article
Cold isostatic pressing (CIP); Iron and aluminium powders; Densification and hardness; Finite element method; Hardening soil model

Articles in the same Issue

  1. Original Contributions
  2. Alloying effect on microstructure and mechanical properties of thermomechanically processed Ni3(Si,Ti) alloys
  3. Contents
  4. Contents
  5. Original Contributions
  6. Neuro-finite element application in material characterization using small punch test
  7. Multi-phase biocomposite material in-situ fabricated by using hydroxyapatite and amorphous nanosilica
  8. Particularities of the formations of bainite and martensite/austenite phase in low carbon low alloy steels during continuous cooling
  9. Texture analysis of polymer modified bitumen images
  10. Influence of nitridation time on microstructure, morphology and optical properties of GaN nanowires by nitridizing Ga2O3/Cr thin films
  11. Deformation behaviour of freestanding single-crystalline Ni3Al-based nanoparticles
  12. Precipitation strengthening in high manganese austenitic TWIP steels
  13. Effects of pre-deformation and subsequent low-temperature annealing on transformation, mechanical properties and shape memory behavior of a Ti-rich TiNi alloy
  14. Enhancement in optical transmission of ZnO: Al film by c-orientation arrayed growth
  15. Physical and mechanical behavior of high strength self-compacting concrete containing ZrO2 nanoparticles
  16. Experimental and numerical studies of metallic powders subjected to cold isostatic pressing
  17. Consumption of Cu pad during multiple reflows of Ni-doped SnAgCu solder
  18. Nanocrystalline CdS thin films prepared by sol-gel spin coating
  19. An energy absorption system based on carbon nanotubes and non-aqueous liquid
  20. People
  21. Professor Dr.-Ing. Jürgen Haußelt zum 65. Geburtstag
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