A simple model for material's strengthening under high pressure torsion

Khoddam, S., Hodgson, P.D., Zarei-Hanzaki, A. and Yan Foon, L. 2016, A simple model for material's strengthening under high pressure torsion, Materials & design, vol. 99, pp. 335-340, doi: 10.1016/j.matdes.2016.03.085.

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Title A simple model for material's strengthening under high pressure torsion
Author(s) Khoddam, S.ORCID iD for Khoddam, S. orcid.org/0000-0002-5205-2086
Hodgson, P.D.
Zarei-Hanzaki, A.
Yan Foon, L.
Journal name Materials & design
Volume number 99
Start page 335
End page 340
Total pages 6
Publisher Elsevier
Place of publication London, Eng.
Publication date 2016-06-05
ISSN 0264-1275
Keyword(s) high pressure torsion
sticking friction
extended deformation
Summary Constrained high pressure torsion (CHTP) is a promising route to fabricate ultra-fine structured bulk and powder materials. It was recently proposed as a mechanical test for large strains. Only a few models are available on "friction induced deformation" during CHTP. A number of closed form models were derived in this work to estimate a sticking friction condition during CHPT. The models also correlate CHPT's torque-twist-pressure response and its constitutive parameters. To verify the accuracy of the derivations, the response for Armco iron samples were estimated under three different pressures of 1.9, 3.8 and 7.5 GP and compared with experimental data. Contribution of frictional power dissipated at the specimen's circumferential surface was evaluated and compared with the total deformation power.
Language eng
DOI 10.1016/j.matdes.2016.03.085
Field of Research 091207 Metals and Alloy Materials
0912 Materials Engineering
0913 Mechanical Engineering
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Crown Copyright
Persistent URL http://hdl.handle.net/10536/DRO/DU:30089465

Document type: Journal Article
Collections: Institute for Frontier Materials
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