Workability characteristics and mechanical behavior modeling of severely deformed pure titanium at high temperatures

Name: Workability characteristics and mechanical behavior modeling of severely deformed pure titanium at high temperatures
Author: Sajadifar, Seyed Vahid, Yapıcı, Güney Güven

İsim	Workability characteristics and mechanical behavior modeling of severely deformed pure titanium at high temperatures
Yazar	Sajadifar, Seyed Vahid, Yapıcı, Güney Güven
Basım Tarihi:	2014-01
Basım Yeri	- Elsevier
Konu	Titanium, Equal channel angular extrusion/pressing, Severe plastic deformation, Modeling of hot deformation
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0261-3069
Kayıt Numarası	d8831c0d-4ee5-4e44-9add-b6e4c1299a9c
Lokasyon	Mechanical Engineering
Tarih	2014-01
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	In the present study, compression tests were performed at temperatures of 600–900 °C and at strain rates of 0.001–0.1 s−1 to study the deformation and workability characteristics of commercially pure titanium after severe plastic deformation (SPD). It was found that the effects of temperature and strain rate are significant in dictating the steady state flow stress levels and the strain values corresponding to peak flow stress. The strain rate sensitivity (m) during hot compression of severely deformed Ti was shown to be strongly temperature dependent, where m increased with the increase in deformation temperature up to 800 °C. High temperature workability was analyzed based on the flow localization parameter (FLP). According to the FLP values, deformation at and below 700 °C is prone to flow localization. The flow behavior was predicted using Arrhenius type and dislocation density based models. The validities of the models were demonstrated with reasonable agreement in comparison to the experimental stress–strain responses.
DOI	10.1016/j.matdes.2013.07.057
Cilt	53

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Workability characteristics and mechanical behavior modeling of severely deformed pure titanium at high temperatures

Yazar Sajadifar, Seyed Vahid, Yapıcı, Güney Güven

Basım Tarihi 2014-01

Basım Yeri - Elsevier

Konu Titanium, Equal channel angular extrusion/pressing, Severe plastic deformation, Modeling of hot deformation

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0261-3069

Kayıt Numarası d8831c0d-4ee5-4e44-9add-b6e4c1299a9c

Lokasyon Mechanical Engineering

Tarih 2014-01

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin In the present study, compression tests were performed at temperatures of 600–900 °C and at strain rates of 0.001–0.1 s−1 to study the deformation and workability characteristics of commercially pure titanium after severe plastic deformation (SPD). It was found that the effects of temperature and strain rate are significant in dictating the steady state flow stress levels and the strain values corresponding to peak flow stress. The strain rate sensitivity (m) during hot compression of severely deformed Ti was shown to be strongly temperature dependent, where m increased with the increase in deformation temperature up to 800 °C. High temperature workability was analyzed based on the flow localization parameter (FLP). According to the FLP values, deformation at and below 700 °C is prone to flow localization. The flow behavior was predicted using Arrhenius type and dislocation density based models. The validities of the models were demonstrated with reasonable agreement in comparison to the experimental stress–strain responses.

DOI 10.1016/j.matdes.2013.07.057

Cilt 53