Skip to main content

Investigating Anvil Alignment and Anvil Roughness on Flow Pattern Development in High-Pressure Torsion.

Huang, Y., Kawasaki, M. and Langdon, T.G., 2016. Investigating Anvil Alignment and Anvil Roughness on Flow Pattern Development in High-Pressure Torsion. In: IMRC2015: XXIV International Materials Research Congress 2015, 17-21 August 2015, Cancun, Mexico, imrc2015s4g-p001.

Full text available as:

[img]
Preview
PDF
HuangY-MRS OPL-2016-1818-1 (HPT, anvil alignment, anvil roughness, flow pattern).pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

1MB

DOI: 10.1557/opl.2016.79

Abstract

High-pressure torsion (HPT) is a processing technique in which samples are subjected to a high pressure and torsional straining. Anvil alignment and anvil roughness are two important factors related to the successful application of the HPT processing technique. Using a two phase duplex stainless steel as a model material, experiments were conducted by placing the anvils in different amounts of initial misalignment. Experiments show that the flow patterns (the development of double-swirl patterns) in HPT are dependent upon the alignment of the anvils within the HPT facility. Through carefully designed experiments, it is shown that the presence of a double-swirl is a feature of HPT processing when the initial positions of the anvils have a small lateral misalignment. The effect of the double-swirl patterns on the hardness evolution was also evaluated quantitatively. By comparing the flow patterns developed on the disc upper surface using both rough and smooth anvils with a fixed anvil misalignment, it was demonstrated that there are some differences in the flow patterns which are dependent upon the anvil surface roughness.

Item Type:Conference or Workshop Item (Paper)
ISSN:0272-9172
Group:Faculty of Science & Technology
ID Code:34365
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:03 Aug 2020 11:36
Last Modified:03 Aug 2020 11:36

Downloads

Downloads per month over past year

More statistics for this item...
Repository Staff Only -