Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α +β and β Phase Regions

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Sheikhali A.; Morakkabati M.; ABBASI S.M.

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Journal: ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL) Year:2019 | Volume:38 | Issue:1 Page(s): 37-48

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Title

Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α +β and β Phase Regions

Author(s)

Sheikhali A. | Morakkabati M. | ABBASI S.M. | Issue Writer Certificate

Keywords

SP-700 titanium alloyQ1

Hot tensile testQ1

Flow softeningQ1

ElongationQ1

Dynamic recoveryQ1

Abstract

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 º C) was different from the β single phase one (950-1100 º C) 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 temperature range of 850-900 º C was due to the occurrence of beta transformation and removal of the alpha phase. The 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 º C.

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APA: Copy

Sheikhali, A., Morakkabati, M., & ABBASI, S.M.. (2019). Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α +β and β Phase Regions. ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL), 38(1 ), 37-48. SID. https://sid.ir/paper/163244/en

Vancouver: Copy

Sheikhali A., Morakkabati M., ABBASI S.M.. Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α +β and β Phase Regions. ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL)[Internet]. 2019;38(1 ):37-48. Available from: https://sid.ir/paper/163244/en

IEEE: Copy

A. Sheikhali, M. Morakkabati, and S.M. ABBASI, “Flow Behavior of SP-700 Titanium Alloy During Hot Tensile Deformation in α +β and β Phase Regions,” ADVANCED MATERIALS IN ENGINEERING (ESTEGHLAL), vol. 38, no. 1 , pp. 37–48, 2019, [Online]. Available: https://sid.ir/paper/163244/en

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