High pressure torsion of pure Ti: Effect of pressure and strain on allotropy

Kaveh Edalati, Zenji Horita, Masaki Tanaka, Kenji Higashida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

High-pressure torsion (HPT) was conducted on commercial grade pure titanium (99.4%) by applying pressures in a wide range from 1.2 to 40 GPa. When the microhardness was plotted against equivalent strain, the hardness saturates to a constant level at each applied pressure. Such a level at the saturation depends on the applied pressure: for up to the pressure of 4 GPa, the saturation level is independent of the pressure but, for the pressures above 4 GPa, the hardness gradually increases with pressure because of the formation of an w phase. Bending tests showed that an excellent ductility as well as high bending strength was achieved for the sample processed at 2 GPa. The bending ductility was reduced for the sample at 6 GPa because of the ω phase formation.

Original languageEnglish
Title of host publicationTHERMEC 2009 Supplement
Pages171-176
Number of pages6
DOIs
Publication statusPublished - 2010
Event6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009 - Berlin, Germany
Duration: Aug 25 2009Aug 29 2009

Publication series

NameAdvanced Materials Research
Volume89-91
ISSN (Print)1022-6680

Other

Other6th International Conference on Processing and Manufacturing of Advanced Materials - THERMEC'2009
CountryGermany
CityBerlin
Period8/25/098/29/09

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Edalati, K., Horita, Z., Tanaka, M., & Higashida, K. (2010). High pressure torsion of pure Ti: Effect of pressure and strain on allotropy. In THERMEC 2009 Supplement (pp. 171-176). (Advanced Materials Research; Vol. 89-91). https://doi.org/10.4028/www.scientific.net/AMR.89-91.171