Influence of beam current on microstructure of electron beam melted Ti-6Al-4V alloy

Аннотация

The defect microstructure of the samples manufactured from Ti-6Al-4V powder was studied using electron beam melting (EBM) in the beam current range of 17 - 13 mA. The hybrid digital complex combined positron lifetime spectroscopy and coincidence Doppler broadening spectroscopy was used to characterize the defect structure of the materials. The microstructure and defects were also analyzed by transmission electron microscopy. It has been established that the main type of the defects in the EBM manufactured samples is dislocations. According to the conducted measurements and calculations, the dislocation density in the EBM manufactured samples exceeds by two orders the similar value for the cast Ti-6Al-4Valloy. Formation of Ti-Ti-Al nanoscale clusters has been found in the EBM manufactured samples.

Язык оригинала	Английский
Журнал	Progress in Natural Science: Materials International
DOI	https://doi.org/10.1016/j.pnsc.2019.04.011
Состояние	Принято/в печати - 1 янв 2019

ASJC Scopus subject areas

Materials Science(all)

Доступ к документу

10.1016/j.pnsc.2019.04.011

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Цитировать

Laptev, R., Pushilina, N., Kashkarov, E., Syrtanov, M., Stepanova, E., Koptyug, A., & Lider, A. (Принято в печать). Influence of beam current on microstructure of electron beam melted Ti-6Al-4V alloy. Progress in Natural Science: Materials International. https://doi.org/10.1016/j.pnsc.2019.04.011

Influence of beam current on microstructure of electron beam melted Ti-6Al-4V alloy. / Laptev, Roman ; Pushilina, Natalia ; Kashkarov, Egor ; Syrtanov, Maxim ; Stepanova, Ekaterina; Koptyug, Andrey; Lider, Andrey.

В: Progress in Natural Science: Materials International, 01.01.2019.

Результат исследований: Материалы для журнала › Статья

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title = "Influence of beam current on microstructure of electron beam melted Ti-6Al-4V alloy",

abstract = "The defect microstructure of the samples manufactured from Ti-6Al-4V powder was studied using electron beam melting (EBM) in the beam current range of 17 - 13 mA. The hybrid digital complex combined positron lifetime spectroscopy and coincidence Doppler broadening spectroscopy was used to characterize the defect structure of the materials. The microstructure and defects were also analyzed by transmission electron microscopy. It has been established that the main type of the defects in the EBM manufactured samples is dislocations. According to the conducted measurements and calculations, the dislocation density in the EBM manufactured samples exceeds by two orders the similar value for the cast Ti-6Al-4Valloy. Formation of Ti-Ti-Al nanoscale clusters has been found in the EBM manufactured samples.",

keywords = "Additive technology, Defects, Electron beam melting, Positron spectroscopy, Titanium alloy, Transmission electron microscopy",

author = "Roman Laptev and Natalia Pushilina and Egor Kashkarov and Maxim Syrtanov and Ekaterina Stepanova and Andrey Koptyug and Andrey Lider",

year = "2019",

month = jan,

day = "1",

doi = "10.1016/j.pnsc.2019.04.011",

language = "English",

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T1 - Influence of beam current on microstructure of electron beam melted Ti-6Al-4V alloy

AU - Laptev, Roman

AU - Pushilina, Natalia

AU - Kashkarov, Egor

AU - Syrtanov, Maxim

AU - Stepanova, Ekaterina

AU - Koptyug, Andrey

AU - Lider, Andrey

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The defect microstructure of the samples manufactured from Ti-6Al-4V powder was studied using electron beam melting (EBM) in the beam current range of 17 - 13 mA. The hybrid digital complex combined positron lifetime spectroscopy and coincidence Doppler broadening spectroscopy was used to characterize the defect structure of the materials. The microstructure and defects were also analyzed by transmission electron microscopy. It has been established that the main type of the defects in the EBM manufactured samples is dislocations. According to the conducted measurements and calculations, the dislocation density in the EBM manufactured samples exceeds by two orders the similar value for the cast Ti-6Al-4Valloy. Formation of Ti-Ti-Al nanoscale clusters has been found in the EBM manufactured samples.

AB - The defect microstructure of the samples manufactured from Ti-6Al-4V powder was studied using electron beam melting (EBM) in the beam current range of 17 - 13 mA. The hybrid digital complex combined positron lifetime spectroscopy and coincidence Doppler broadening spectroscopy was used to characterize the defect structure of the materials. The microstructure and defects were also analyzed by transmission electron microscopy. It has been established that the main type of the defects in the EBM manufactured samples is dislocations. According to the conducted measurements and calculations, the dislocation density in the EBM manufactured samples exceeds by two orders the similar value for the cast Ti-6Al-4Valloy. Formation of Ti-Ti-Al nanoscale clusters has been found in the EBM manufactured samples.

KW - Additive technology

KW - Defects

KW - Electron beam melting

KW - Positron spectroscopy

KW - Titanium alloy

KW - Transmission electron microscopy

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