Paper Title:
Application of High-Pressure Sliding for Grain Refinement of Al and Mg Alloys
  Abstract

An earlier study showed that high-pressure sliding (HPS) is effective for grain refinement of pure Al in a rectangular sheet form using the principle of high-pressure torsion. In this study, the HPS is applied for grain refinement of an Al-3%Mg-0.2%Sc alloy and an AZ61 Mg alloy. HPS was conducted under a pressure of 1 GPa with sliding distances of 10 to 30 mm at room temperature for the Al alloy and at 473 K for the Mg alloy The average grain size is ~300 nm for both the Al and Mg alloys, respectively. Tensile tests showed that a superplastic elongation of ~1500% is achieved in the Al-3%Mg-0.2%Sc alloy at 573 K with an initial strain rate of 3.3x10-3 s-1 and of ~600% in the AZ61 alloy at 573 K with an initial strain rate of 1x10-3 s-1.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
91-96
DOI
10.4028/www.scientific.net/MSF.667-669.91
Citation
K. Tazoe, S. Honda, Z. Horita, "Application of High-Pressure Sliding for Grain Refinement of Al and Mg Alloys", Materials Science Forum, Vols. 667-669, pp. 91-96, 2011
Online since
December 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Diana Yuzbekova, Anna Mogucheva, Rustam Kaibyshev
Chapter 4: Microstructure Refinement
Abstract:The ultrafine grained structure of an AA5024 with an average size of ∼0.7 μm was produced by equal-channel angular pressing (ECAP) at 300°C...
422
Authors: Hai Long Jia, Knut Marthinsen, Yan Jun Li
Chapter 2: Contributed Papers
Abstract:An ECAP (equal channel angular pressing) processed UFG Al-5Cu alloy was characterized by electron backscatter diffraction (EBSD). It is...
843