Effect of purity levels on the high-temperature deformation characteristics of severely deformed titanium

Name: Effect of purity levels on the high-temperature deformation characteristics of severely deformed titanium
Author: Sajadifar, Seyed Vahid, Yapıcı, Güney Güven

İsim	Effect of purity levels on the high-temperature deformation characteristics of severely deformed titanium
Yazar	Sajadifar, Seyed Vahid, Yapıcı, Güney Güven
Basım Tarihi:	2017
Basım Yeri	- Springer International Publishing
Konu	Compression testing, Constitutive equations, Grain boundaries, Grain growth, Processing, Strain rate
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	1073-5623
Kayıt Numarası	2be7a674-8aa8-488b-b219-9cc2a9d39697
Lokasyon	Mechanical Engineering
Tarih	2017
Notlar	TÜBİTAK
Örnek Metin	In the present investigation, high-temperature compression tests were conducted at strain rates of 0.001 to 0.1 s−1 and at temperatures of 873 K to 1173 K (600 °C to 900 °C) in order to study the hot deformation characteristics and dynamic softening mechanisms of two different grades of commercial purity titanium after severe plastic deformation. It was observed that the effects of deformation rate and temperature are significant on obtained flow stress curves of both grades. Higher compressive strength exhibited by grade 2 titanium at relatively lower deformation temperatures was attributed to the grain boundary characteristics in relation with its lower processing temperature. However, severely deformed grade 4 titanium demonstrated higher compressive strength at relatively higher deformation temperatures (above 800 °C) due to suppressed grain growth via oxygen segregation limiting grain boundary motion. Constitutive equations were established to model the flow behavior, and the validity of the predictions was demonstrated with decent agreement accompanied by average error levels less than 5 pct for all the deformation conditions.
DOI	10.1007/s11661-016-3929-1

Kaynağa git Özyeğin Üniversitesi

Aramaya Dön

Özyeğin Üniversitesi

Kaynağa git

Effect of purity levels on the high-temperature deformation characteristics of severely deformed titanium

Yazar Sajadifar, Seyed Vahid, Yapıcı, Güney Güven

Basım Tarihi 2017

Basım Yeri - Springer International Publishing

Konu Compression testing, Constitutive equations, Grain boundaries, Grain growth, Processing, Strain rate

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 1073-5623

Kayıt Numarası 2be7a674-8aa8-488b-b219-9cc2a9d39697

Lokasyon Mechanical Engineering

Tarih 2017

Notlar TÜBİTAK

Örnek Metin In the present investigation, high-temperature compression tests were conducted at strain rates of 0.001 to 0.1 s−1 and at temperatures of 873 K to 1173 K (600 °C to 900 °C) in order to study the hot deformation characteristics and dynamic softening mechanisms of two different grades of commercial purity titanium after severe plastic deformation. It was observed that the effects of deformation rate and temperature are significant on obtained flow stress curves of both grades. Higher compressive strength exhibited by grade 2 titanium at relatively lower deformation temperatures was attributed to the grain boundary characteristics in relation with its lower processing temperature. However, severely deformed grade 4 titanium demonstrated higher compressive strength at relatively higher deformation temperatures (above 800 °C) due to suppressed grain growth via oxygen segregation limiting grain boundary motion. Constitutive equations were established to model the flow behavior, and the validity of the predictions was demonstrated with decent agreement accompanied by average error levels less than 5 pct for all the deformation conditions.

DOI 10.1007/s11661-016-3929-1