Paper Title:
Equal Channel Angular Pressing and Torsion of Pure Al Powder in Tubes
  Abstract

In this work, a new severe plastic deformation technique for preparing bulk fine-grained materials has been developed to achieve higher plasticity of powder materials. This novel technique, named Equal Channel Angular Pressing and Torsion (ECAPT), combines two severe plastic deformation methods: equal channel angular pressing and twist extrusion. With the designed ECAPT set-up, pure Al powder particles were successfully consolidated into full dense bulk material with fine grains at a lower deformation temperature (200°C) by Powder in Tubes-Equal Channel Angular Pressing and Torsion (PITS-ECAPT). After two passes of PITS-ECAPT, the microstructures at X, Y and Z planes of each sample were all sheared and elongated along a certain direction with fine banded structures; the grains were greatly squashed and refined with an average grain size of ~ 11.90µm; the deformed sample reached the full density; the micro-hardness and yield strength achieved 49.9kg/mm2 and 155Mpa respectively, which were significantly higher than those of as-cast annealed pure Al and pure Al powder sintered materials.

  Info
Periodical
Advanced Materials Research (Volumes 97-101)
Edited by
Zhengyi Jiang and Chunliang Zhang
Pages
1109-1115
DOI
10.4028/www.scientific.net/AMR.97-101.1109
Citation
X. X. Wang, K. M. Xue, P. Li, Z. L. Wu, Q. Li, "Equal Channel Angular Pressing and Torsion of Pure Al Powder in Tubes", Advanced Materials Research, Vols. 97-101, pp. 1109-1115, 2010
Online since
March 2010
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Price
$32.00
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