Hydrostatic Extrusion as a Method of Grain Refinement in Metallic Materials

Abstract:

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The paper describes hydrostatic extrusion (HE) as a method of grain refinement of metallic materials down to the nanometric scale. The main features of this method are: (a) large strain, (b) very high strain rates (even greater than 104 s-1), and (c) deformation homogeneity. HE offers also the opportunity of obtaining bulk materials in a variety of forms (rods and wires of complex cross-sections, small tubes). The study undertaken on 4 materials (aluminium, aluminium alloy, copper and titanium) has shown that significant grain refinement , down to nanometric scale in the case of titanium and aluminium alloy, occurred during HE processing. This grain refinement produces significantly improved mechanical properties. It has been found that HE offers good prospects for the production of nano-structured metals and alloys.

Info:

Periodical:

Materials Science Forum (Volumes 503-504)

Edited by:

Zenji Horita

Pages:

341-348

DOI:

10.4028/www.scientific.net/MSF.503-504.341

Citation:

K. J. Kurzydlowski "Hydrostatic Extrusion as a Method of Grain Refinement in Metallic Materials", Materials Science Forum, Vols. 503-504, pp. 341-348, 2006

Online since:

January 2006

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Price:

$35.00

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