Evaluation of Changes in Plastic Yield Parameters of Titanium CP-2 using Electrical Resistivity Measurements

The paper focuses on the connection between the changes in electrical resistivity and plastic yield parameters - hardening coefficient and yield stress - of Titanium CP-2 specimens subjected to quasi-static loading-unloading cycles. Such a cross-property connection possible due is made to all the me...

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Veröffentlicht in:International Journal of Fracture, Vol. 187, No. 1 (2014), p. 179-186
1. Verfasser: Omari, A.
Weitere beteiligte Personen: Balázs, Tűri ; Sevostianov, Igor
Format: elektronischer Aufsatz
Sprache:English
ISSN:1573-2673
Umfang:Online-Ressource
DOI:10.1007/s10704-013-9915-3
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  • The paper focuses on the connection between the changes in electrical resistivity and plastic yield parameters - hardening coefficient and yield stress - of Titanium CP-2 specimens subjected to quasi-static loading-unloading cycles. Such a cross-property connection possible due is made to all the mentioned properties being controlled by the same microstructural parameter – dislocation density that increases during each loading-unloading cycle. Electrical resistivity has been measured at the end of each cycle and plastic yield parameters have been obtained from the stress-strain curves. The microstructural changes were also evaluated using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). Experimental measurements are in a good agreement with the theoretical estimates.