Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111864
Title: Flow Behavior and Microstructure Evolution of Ti-6Al-4V Titanium Alloy Produced by Selective Laser Melting Compared to Wrought
Authors: Salikhyanov, D.
Veselova, V.
Volkov, V.
Issue Date: 2022
Publisher: Springer Science and Business Media Deutschland GmbH
Springer Science and Business Media LLC
Citation: Salikhyanov D. Flow Behavior and Microstructure Evolution of Ti-6Al-4V Titanium Alloy Produced by Selective Laser Melting Compared to Wrought / D. Salikhyanov, V. Veselova, V. Volkov // International Journal of Advanced Manufacturing Technology. — 2022. — Vol. 119. — Iss. 1-2. — P. 953-967.
Abstract: Nowadays, selective laser melting (SLM) represents an option for manufacturing parts from titanium alloys, especially from Ti-6Al-4V alloy. However, mechanical properties of parts made of SLM-produced Ti-6Al-4V, such as ductility and fatigue resistance, are significantly lower than that of wrought ones. The promising way to improve mechanical properties of SLM parts without expensive hot isostatic pressing can be combination SLM and deformation post-processing. Therefore, the goal of the present study is to investigate the flow stress behavior and microstructure evolution of Ti-6Al-4V fabricated by SLM in a wide temperature range in comparison with conventional manufactured material. In contrast to wrought material, SLM-produced Ti-6Al-4V shows high plastic flow instability at test temperatures of 20–900 °С, which was demonstrated via temperature sensitivity and softening rate. FEM-simulation of hot isothermal compression of samples was conducted in order to compare the deformation inhomogeneity between SLM-produced and wrought materials, namely, local strains e in the severe plastic deformation and dead metal zones. The microstructure in these characteristic zones of both materials deformed in (α + β)-field was examined by means of optical microscopy. The type of microstructure and grain size of the SLM-produced and wrought material were studied. It turned out that the deformation of SLM-produced Ti-6Al-4V at a lower temperature (800 °C) and a higher strain rate (1 s−1) makes it possible to obtain ultrafine-grained microstructure. This, in turn, opens the door to the production of Ti-6Al-4V parts with high mechanical properties via processing route SLM + metal forming. © 2021, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature.
Keywords: ADDITIVE MANUFACTURING
FLOW STRESS
MICROSTRUCTURE
SELECTIVE LASER MELTING
TI-6AL-4V
TITANIUM ALLOY
ALUMINUM ALLOYS
HOT ISOSTATIC PRESSING
MELTING
PLASTIC FLOW
SELECTIVE LASER MELTING
STRAIN RATE
TERNARY ALLOYS
TITANIUM ALLOYS
BEHAVIOR EVOLUTION
FATIGUE-RESISTANCE
FLOW BEHAVIOURS
HOT-ISOSTATIC PRESSINGS
POST-PROCESSING
SELECTIVE LASER MELTING
TI-6AL-4V
TI-6AL-4V TITANIUM ALLOYS
TITANIUM (ALLOYS)
WROUGHT MATERIALS
URI: http://hdl.handle.net/10995/111864
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85118922637
ISSN: 0268-3768
metadata.dc.description.sponsorship: This study was supported by Act 211 of the Government of the Russian Federation (agreement no. 02.A03.21.0006).
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
File Description SizeFormat 
2-s2.0-85118922637.pdf3,13 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.