J Mater Sci Technol ›› 2005, Vol. 21 ›› Issue (02): 148-154.

• Research Articles • Previous Articles     Next Articles

Experimental Study and Finite Element Polycrystal Model Simulation of the Cold Rolling Textures in a Powder Metallurgy Processed Pure Aluminum Plate

Liqing CHEN, Naoyuki Kanetake   

  1. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China...
  • Received:2004-08-17 Revised:2004-10-08 Online:2005-03-28 Published:2009-10-10
  • Contact: Liqing CHEN

Abstract: Ingot metallurgy (IM) aluminum has long been the subject and attracted the attention of many metallurgists and textural researchers of materials. Due to the introduction of large amounts of ex situ interfaces, however, the textures in powder metallurgy (PM) processed aluminum has been rarely reported. In this article, a pure aluminum plate was prepared $via$ PM route. The starting billet was first produced with uni-axially cold compaction and flat hot-extrusion and then followed by cold rolling processes. The hot-extruded and cold rolling deformation textures of the pure PM aluminum at 50%, 80% and 90% cold rolling reductions were studied by orientation distribution functions (ODFs) analysis. The finite element polycrystal model (FEPM) was finally utilized to simulate the cold rolling textural evolution at various stages of cold rolling. In FEPM simulation, the initial hot-extruded textures were taken into account as inputs. The results showed that typical β-fiber texture formed in pure PM aluminum with the cold rolling reduction increased till 80%, and there was not much change after excessive cold rolling deformation. Homogeneous slip is not the only deformation mode in PM processed pure aluminum plate at over 80% cold rolling reduction. The experimental results were qualitatively in good agreement with the simulated ones.

Key words: Texture, Cold rolling, Aluminium, Finite element polycrystal model (FEPM), Powder metallurgy