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High temperature flow response modeling of ultra-fine grained titanium

Title	High temperature flow response modeling of ultra-fine grained titanium
Author	Sajadifar, Seyed Vahid, Yapıcı, Güney Güven
Publication Date:	2015
Publication Place	- MDPI AG
Subject	Severe plastic deformation, Titanium, Equal channel angular extrusion/pressing, High temperature, Ultra-fine grained, Johnson-Cook model
Type	Periodical
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	2075-4701
Record ID	724c7ccd-2d84-4046-a884-449b0b737337
Library Location	Mechanical Engineering
Date	2015
Notes	European Commission
Sample Text	This work presents the mechanical behavior modeling of commercial purity titanium subjected to severe plastic deformation (SPD) during post-SPD compression, at temperatures of 600-900 °C and at strain rates of 0.001-0.1 s−1. The flow response of the ultra-fine grained microstructure is modeled using the modified Johnson-Cook model as a predictive tool, aiding high temperature forming applications. It was seen that the model was satisfactory at all deformation conditions except for the deformation temperature of 600 °C. In order to improve the predictive capability, the model was extended with a corrective term for predictions at temperatures below 700 °C. The accuracy of the model was displayed with reasonable agreement, resulting in error levels of less than 5% at all deformation temperatures.
DOI	10.3390/met5031315
Cilt	5

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Özyeğin University

High temperature flow response modeling of ultra-fine grained titanium

Author Sajadifar, Seyed Vahid, Yapıcı, Güney Güven

Publication Date 2015

Publication Place - MDPI AG

Subject Severe plastic deformation, Titanium, Equal channel angular extrusion/pressing, High temperature, Ultra-fine grained, Johnson-Cook model

Type Periodical

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 2075-4701

Record ID 724c7ccd-2d84-4046-a884-449b0b737337

Library Location Mechanical Engineering

Date 2015

Notes European Commission

Sample Text This work presents the mechanical behavior modeling of commercial purity titanium subjected to severe plastic deformation (SPD) during post-SPD compression, at temperatures of 600-900 °C and at strain rates of 0.001-0.1 s−1. The flow response of the ultra-fine grained microstructure is modeled using the modified Johnson-Cook model as a predictive tool, aiding high temperature forming applications. It was seen that the model was satisfactory at all deformation conditions except for the deformation temperature of 600 °C. In order to improve the predictive capability, the model was extended with a corrective term for predictions at temperatures below 700 °C. The accuracy of the model was displayed with reasonable agreement, resulting in error levels of less than 5% at all deformation temperatures.

DOI 10.3390/met5031315

Cilt 5