Factors Influencing the Development of Homogeneity in Disks Processed by High-Pressure Torsion

Abstract:

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High-pressure torsion (HPT) is an important processing technique in which a disk is subjected to a high pressure with concurrent torsional straining. In principle at least, the imposed strain is zero at the center of the disk and a maximum at the outer edge. This difference suggests, therefore, that materials processed by HPT will exhibit considerable inhomogeneity. This paper describes the results obtained in a series of experiments which were designed to evaluate the evolution of homogeneity during the processing of two materials by HPT. It is demonstrated that it is possible to achieve a reasonable level of homogeneity in both materials but there are important differences which reflect the dependence of the microstructure on the occurrence of dynamic recovery.

Info:

Periodical:

Materials Science Forum (Volumes 584-586)

Edited by:

Yuri Estrin and Hans Jürgen Maier

Pages:

3-8

DOI:

10.4028/www.scientific.net/MSF.584-586.3

Citation:

C. Xu et al., "Factors Influencing the Development of Homogeneity in Disks Processed by High-Pressure Torsion ", Materials Science Forum, Vols. 584-586, pp. 3-8, 2008

Online since:

June 2008

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$35.00

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