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Load partition and microstructural evolution during in situ hot deformation of Ti–6Al–6V–2Sn alloys

Canelo-Yubero, David and Requena, Guillermo and Sket, Federico and Poletti, Cecilia and Warchomicka, Fernando and Daniels, John and Schell, Norbert and Stark, Andreas (2016) Load partition and microstructural evolution during in situ hot deformation of Ti–6Al–6V–2Sn alloys. Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, 657, pp. 244-258. Elsevier. DOI: 10.1016/j.msea.2016.01.059 ISSN 0921-5093

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Abstract

Two Ti–6Al–6V–2Sn alloys, with globular and lamellar microstructures, are deformed at 750 °C during tensile and compression tests. The lamellar microstructure shows softening and higher peak stress values than the globular microstructure as a consequence of the Hall–Petch effect. In-situ high energy Synchrotron diffraction experiments allow characterization of the load partition between α- and β-phases, plastic deformation mechanisms and texture evolution. The α-phase deforms mainly by rotation while the β-phase deforms by misorientation formation, acting merely as load transfer agent. The Taylor factor evolution of the α-phase and the annihilation of dislocations are analyzed qualitatively and quantitatively. The Taylor factor is connected to both the softening observed in the alloy with the lamellar microstructure and the texture development.

Item URL in elib:https://elib.dlr.de/108456/
Document Type:Article
Title:Load partition and microstructural evolution during in situ hot deformation of Ti–6Al–6V–2Sn alloys
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Canelo-Yubero, DavidUNSPECIFIEDUNSPECIFIED
Requena, GuillermoGuillermo.Requena (at) dlr.deUNSPECIFIED
Sket, FedericoUNSPECIFIEDUNSPECIFIED
Poletti, CeciliaUNSPECIFIEDUNSPECIFIED
Warchomicka, FernandoUNSPECIFIEDUNSPECIFIED
Daniels, JohnUNSPECIFIEDUNSPECIFIED
Schell, NorbertUNSPECIFIEDUNSPECIFIED
Stark, AndreasUNSPECIFIEDUNSPECIFIED
Date:2016
Journal or Publication Title:Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:657
DOI :10.1016/j.msea.2016.01.059
Page Range:pp. 244-258
Publisher:Elsevier
ISSN:0921-5093
Status:Published
Keywords:Titanium alloys Synchrotron x-ray diffraction Hot deformation Load partition Plasticity Deformation mechanism
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Metallic Structures and Hybrid Material Systems
Deposited By: Requena, Guillermo
Deposited On:29 Nov 2016 14:49
Last Modified:06 Sep 2019 15:28

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