Regularities of titanium alloy structure formation when forming macrodefects in the process of local nonstationary metallurgy | Izvestiya vuzov. Fizika. 2020. № 6. DOI: 10.17223/00213411/63/6/57

Regularities of titanium alloy structure formation when forming macrodefects in the process of local nonstationary metallurgy

In this paper, a study of titanium alloy Ti64 samples obtained by the wire-feed electron-beam additive manufacturing method and characterized by the presence of a defective area resulting from uncontrolled fluctuations of the wire in the 3D-printing process was conducted. In order to assess the impact of such defective areas on the structure and properties of the material, metallographic studies, tensile tests and microhardness measurements were performed. The carried out studies showed that the defective area is represented by smaller grains of the primary b-phase in comparison with the typical columnar structure of additively manufactured Ti64 alloy. At the same time the microhardness of the material in the defective and defect-free areas of the sample is identical. In general, this type of defect affects the deformation behavior of the material, since the defective zone is characterized by decreased ductility but a higher ultimate tensile strength compared to the defect-free material.

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Keywords

аддитивные технологии, титановый сплав, механические свойства, микроструктура, additive manufacturing, titanium alloy, mechanical properties, microstructure

Authors

Name	Organization	E-mail
Kalashnikov K.N.	Institute of Strength Physics and Materials Science of SB RAS	kkn@ispms.tsc.ru
Chumaevskii A.V.	Institute of Strength Physics and Materials Science of SB RAS	tch7av@gmail.com
Kalashnikova T.A.	Institute of Strength Physics and Materials Science of SB RAS	gelombang@ispms.tsc.ru
Osipovich K.S.	Institute of Strength Physics and Materials Science of SB RAS	osipovich_k@ispms.tsc.ru
Kolubaev E.A.	Institute of Strength Physics and Materials Science of SB RAS	eak@ispms.tsc.ru

Всего: 5

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