Microstructure and mechanical properties of tial-based alloy produced by selective laser melting

Igor Polozov; Artem Kantyukov; Vera Popovich; Jia Ning Zhu; Anatoly Popovich

doi:10.37904/metal.2020.3604

Microstructure and mechanical properties of tial-based alloy produced by selective laser melting

Igor Polozov^*, Artem Kantyukov, Vera Popovich, Jia Ning Zhu, Anatoly Popovich

^*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

9 Citations (SciVal)

344 Downloads (Pure)

Abstract

Additive Manufacturing (AM) is an attractive way of producing parts of intermetallic titanium alloys. However, high brittleness of these alloys makes it challenging to produce crack-free intermetallic parts by AM. One way to overcome this problem is to use high-temperature powder-bed preheating. In this paper, Ti-48Al-2Cr-2Nb alloy was obtained by selective laser melting process with high-temperature preheating of 800-900 ºC. Crack-free specimens with a relative density of 99.9% were fabricated using an optimized process parameter set. Microstructure and phase composition were studied using scanning electron microscopy and X-Ray diffraction to reveal a fine microstructure consisting of lamellar a2/? colonies, equiaxed ? grains, and retained ß phase. Compressive tests and microhardness measurements showed that the produced alloy exhibited superior properties compared to the conventionally obtained TiAl-alloy.

Original language	English
Title of host publication	Proceedings of the 29th International Conference on Metallurgy and Materials (METAL 2020)
Publisher	TANGER Ltd.
Pages	1037-1041
ISBN (Electronic)	978-80-87294-97-0
DOIs	https://doi.org/10.37904/metal.2020.3604
Publication status	Published - 2020
Event	29th International Conference on Metallurgy and Materials, METAL 2020 - Brno, Czech Republic Duration: 20 May 2020 → 22 May 2020

Conference

Conference	29th International Conference on Metallurgy and Materials, METAL 2020
Country/Territory	Czech Republic
City	Brno
Period	20/05/20 → 22/05/20

Keywords

Additive manufacturing
Intermetallics
Selective laser melting
Titanium aluminide

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10.37904/metal.2020.3604

metal2020_polozov_metalFinal published version, 465 KB

Cite this

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title = "Microstructure and mechanical properties of tial-based alloy produced by selective laser melting",

abstract = "Additive Manufacturing (AM) is an attractive way of producing parts of intermetallic titanium alloys. However, high brittleness of these alloys makes it challenging to produce crack-free intermetallic parts by AM. One way to overcome this problem is to use high-temperature powder-bed preheating. In this paper, Ti-48Al-2Cr-2Nb alloy was obtained by selective laser melting process with high-temperature preheating of 800-900 ºC. Crack-free specimens with a relative density of 99.9% were fabricated using an optimized process parameter set. Microstructure and phase composition were studied using scanning electron microscopy and X-Ray diffraction to reveal a fine microstructure consisting of lamellar a2/? colonies, equiaxed ? grains, and retained {\ss} phase. Compressive tests and microhardness measurements showed that the produced alloy exhibited superior properties compared to the conventionally obtained TiAl-alloy.",

keywords = "Additive manufacturing, Intermetallics, Selective laser melting, Titanium aluminide",

author = "Igor Polozov and Artem Kantyukov and Vera Popovich and Zhu, {Jia Ning} and Anatoly Popovich",

year = "2020",

doi = "10.37904/metal.2020.3604",

language = "English",

pages = "1037--1041",

booktitle = "Proceedings of the 29th International Conference on Metallurgy and Materials (METAL 2020)",

publisher = "TANGER Ltd.",

note = "29th International Conference on Metallurgy and Materials, METAL 2020 ; Conference date: 20-05-2020 Through 22-05-2020",

}

Polozov, I, Kantyukov, A, Popovich, V, Zhu, JN & Popovich, A 2020, Microstructure and mechanical properties of tial-based alloy produced by selective laser melting. in Proceedings of the 29th International Conference on Metallurgy and Materials (METAL 2020). TANGER Ltd., pp. 1037-1041, 29th International Conference on Metallurgy and Materials, METAL 2020, Brno, Czech Republic, 20/05/20. https://doi.org/10.37904/metal.2020.3604

Microstructure and mechanical properties of tial-based alloy produced by selective laser melting. / Polozov, Igor; Kantyukov, Artem; Popovich, Vera et al.
Proceedings of the 29th International Conference on Metallurgy and Materials (METAL 2020). TANGER Ltd., 2020. p. 1037-1041.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Microstructure and mechanical properties of tial-based alloy produced by selective laser melting

AU - Polozov, Igor

AU - Kantyukov, Artem

AU - Popovich, Vera

AU - Zhu, Jia Ning

AU - Popovich, Anatoly

PY - 2020

Y1 - 2020

N2 - Additive Manufacturing (AM) is an attractive way of producing parts of intermetallic titanium alloys. However, high brittleness of these alloys makes it challenging to produce crack-free intermetallic parts by AM. One way to overcome this problem is to use high-temperature powder-bed preheating. In this paper, Ti-48Al-2Cr-2Nb alloy was obtained by selective laser melting process with high-temperature preheating of 800-900 ºC. Crack-free specimens with a relative density of 99.9% were fabricated using an optimized process parameter set. Microstructure and phase composition were studied using scanning electron microscopy and X-Ray diffraction to reveal a fine microstructure consisting of lamellar a2/? colonies, equiaxed ? grains, and retained ß phase. Compressive tests and microhardness measurements showed that the produced alloy exhibited superior properties compared to the conventionally obtained TiAl-alloy.

AB - Additive Manufacturing (AM) is an attractive way of producing parts of intermetallic titanium alloys. However, high brittleness of these alloys makes it challenging to produce crack-free intermetallic parts by AM. One way to overcome this problem is to use high-temperature powder-bed preheating. In this paper, Ti-48Al-2Cr-2Nb alloy was obtained by selective laser melting process with high-temperature preheating of 800-900 ºC. Crack-free specimens with a relative density of 99.9% were fabricated using an optimized process parameter set. Microstructure and phase composition were studied using scanning electron microscopy and X-Ray diffraction to reveal a fine microstructure consisting of lamellar a2/? colonies, equiaxed ? grains, and retained ß phase. Compressive tests and microhardness measurements showed that the produced alloy exhibited superior properties compared to the conventionally obtained TiAl-alloy.

KW - Additive manufacturing

KW - Intermetallics

KW - Selective laser melting

KW - Titanium aluminide

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DO - 10.37904/metal.2020.3604

M3 - Conference contribution

AN - SCOPUS:85096753467

SP - 1037

EP - 1041

BT - Proceedings of the 29th International Conference on Metallurgy and Materials (METAL 2020)

PB - TANGER Ltd.

T2 - 29th International Conference on Metallurgy and Materials, METAL 2020

Y2 - 20 May 2020 through 22 May 2020

ER -

Microstructure and mechanical properties of tial-based alloy produced by selective laser melting

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Keywords

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