Mechanical Properties of Ultrafine Grained Two-Phase Titanium Alloy Produced by “abc” Deformation

Sergey V. Zherebtsov; Sergey Kostjuchenko; Egor A. Kudryavtsev; Svetlana Malysheva; Maria A. Murzinova; Gennady A. Salishchev

doi:10.4028/www.scientific.net/MSF.706-709.1859

Paper Titles

Crystallographic Features of Martensite Transformed from Ultrafine Grained Austenite Fabricated by Severe Plastic Deformation
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Effect of Grain Boundaries on Fracture Toughness in Ultraﬁne-Grained Metals by Atomic-Scale Computational Experiments
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Microstructural and Mechanical Properties of UFG Silver Subjected to Severe Plastic Deformation by ECAP
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Specific Mechanical Properties of Superplastically Formed Components and Resulting Applications for Vehicles
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Mechanical Properties of Ultrafine Grained Two-Phase Titanium Alloy Produced by “abc” Deformation
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Ultrafine Grain Structure Evolution in AA6085 Aluminium Alloy Processed by HPT at Increased Temperature
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Shielding Effectiveness of CNTs/SSFs/PA6 Conductive Composites
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Application of EBSD to the Crystallographic Investigation on Ni-Mn-Ga Alloys
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Elaboration of Architectured Materials by Spark Plasma Sintering
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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Mechanical Properties of Ultrafine Grained...

Mechanical Properties of Ultrafine Grained Two-Phase Titanium Alloy Produced by “abc” Deformation

Abstract:

The mechanical properties of two-phase Ti-6Al-4V titanium alloy with ultrafine grained microstructure were studied in the present work. Bulk ultrafine grained specimens of the alloy were produced by means of warm “abc” deformation. The final structure consisted of α/β particles with a size of 500 nm. Extensive studies of the mechanical properties of this material in comparison with conventionally heat-strengthened condition were conducted. A room-temperature strength and fatigue resistance of the ultrafine grained material was found to be 25-40% higher than that of heat-strengthened alloy. However such ductility related properties as tensile elongation and impact toughness noticeably decreased with decreasing grain size. Efficacy of ductility improvement and the strength/ductility balance optimization were analyzed.