Investigating Anvil Alignment and Anvil Roughness on Flow Pattern Development in High-Pressure Torsion
Authors: Huang, Y.
Conference: IMRC2015: XXIV International Materials Research Congress 2015
Dates: 17-21 August 2015
Journal: MRS Online Proceedings Library
Volume: 1818
Pages: 79(1)-79(12)
Publisher: Springer
ISSN: 0272-9172
DOI: 10.1557/opl.2016.79
https://eprints.bournemouth.ac.uk/34365/
Source: Manual
Investigating Anvil Alignment and Anvil Roughness on Flow Pattern Development in High-Pressure Torsion.
Authors: Huang, Y., Kawasaki, M. and Langdon, T.G.
Editors: Cabrera-Marrero, J., Sabirov, I., Zhilyaev, A., Moreira Jr, A.J. and Salinas, A.
Conference: IMRC2015: XXIV International Materials Research Congress 2015
Pages: imrc2015s4g-p001
ISSN: 0272-9172
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.
https://eprints.bournemouth.ac.uk/34365/
Source: BURO EPrints