Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions
In this paper, in order to study the flow behavior and elongation of as-cast ingots of SP-700 titanium alloy, hot tensile test was done in α/β dual phase and β single phase regions using strain rate of 0.1 s-1. Results showed that the hot tensile behavior of SP-700 in the α/β dual phase region (700-...
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Isfahan University of Technology
2019-06-01
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doaj-bb1a4a98826a4e47b0ed034fd7a8526c2021-03-08T09:59:11ZfasIsfahan University of TechnologyJournal of Advanced Materials in Engineering2251-600X2423-57332019-06-013813748Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase RegionsA. Sheikhali0M. Morakkabati1S. M. Abbasi2 Metallic Materials Research Center, Malek Ashtar University of Technology, Tehran, Iran. Metallic Materials Research Center, Malek Ashtar University of Technology, Tehran, Iran. Metallic Materials Research Center, Malek Ashtar University of Technology, Tehran, Iran. In this paper, in order to study the flow behavior and elongation of as-cast ingots of SP-700 titanium alloy, hot tensile test was done in α/β dual phase and β single phase regions using strain rate of 0.1 s-1. Results showed that the hot tensile behavior of SP-700 in the α/β dual phase region (700-900 ºC) was different from the β single phase one (950-1100 ºC) due to the nature of alpha and beta phases and their crystallographic structure. This was since the number of slip systems and deformation mechanism in HCP structure were different from those in BCC structure. Beside, the intensive variation of elongation in microstructural studies showed that the dominant mechanism of hot tensile deformation of SP-700 alloy was dynamic recovery (DRV). Thus, serration of grain boundaries and occurrence of DRV were the reasons for the increase of elongation with the rise of temperature. However, beta grains growth and occurrence of grain boundary fracture made a slight decrease in elongation in the temperature range of 1000-1100 ºC.http://jame.iut.ac.ir/article-1-942-en.htmlsp-700 titanium alloyhot tensile testflow softeningelongationdynamic recovery. |
collection |
DOAJ |
language |
fas |
format |
Article |
sources |
DOAJ |
author |
A. Sheikhali M. Morakkabati S. M. Abbasi |
spellingShingle |
A. Sheikhali M. Morakkabati S. M. Abbasi Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions Journal of Advanced Materials in Engineering sp-700 titanium alloy hot tensile test flow softening elongation dynamic recovery. |
author_facet |
A. Sheikhali M. Morakkabati S. M. Abbasi |
author_sort |
A. Sheikhali |
title |
Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions |
title_short |
Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions |
title_full |
Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions |
title_fullStr |
Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions |
title_full_unstemmed |
Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α+β and β Phase Regions |
title_sort |
flow behavior of sp-700 titanium alloy during hot tensile deformation in α+β and β phase regions |
publisher |
Isfahan University of Technology |
series |
Journal of Advanced Materials in Engineering |
issn |
2251-600X 2423-5733 |
publishDate |
2019-06-01 |
description |
In this paper, in order to study the flow behavior and elongation of as-cast ingots of SP-700 titanium alloy, hot tensile test was done in α/β dual phase and β single phase regions using strain rate of 0.1 s-1. Results showed that the hot tensile behavior of SP-700 in the α/β dual phase region (700-900 ºC) was different from the β single phase one (950-1100 ºC) due to the nature of alpha and beta phases and their crystallographic structure. This was since the number of slip systems and deformation mechanism in HCP structure were different from those in BCC structure. Beside, the intensive variation of elongation in microstructural studies showed that the dominant mechanism of hot tensile deformation of SP-700 alloy was dynamic recovery (DRV). Thus, serration of grain boundaries and occurrence of DRV were the reasons for the increase of elongation with the rise of temperature. However, beta grains growth and occurrence of grain boundary fracture made a slight decrease in elongation in the temperature range of 1000-1100 ºC. |
topic |
sp-700 titanium alloy hot tensile test flow softening elongation dynamic recovery. |
url |
http://jame.iut.ac.ir/article-1-942-en.html |
work_keys_str_mv |
AT asheikhali flowbehaviorofsp700titaniumalloyduringhottensiledeformationinabandbphaseregions AT mmorakkabati flowbehaviorofsp700titaniumalloyduringhottensiledeformationinabandbphaseregions AT smabbasi flowbehaviorofsp700titaniumalloyduringhottensiledeformationinabandbphaseregions |
_version_ |
1724229019660976128 |