Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure

Igor Polozov; Artem Kantyukov; Anatoly Popovich; Vera Popovich

doi:10.1007/978-3-030-65261-6_18

Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure

Igor Polozov^*, Artem Kantyukov, Anatoly Popovich, Vera Popovich

^*Corresponding author for this work

Team Vera Popovich

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

2 Citations (Scopus)

Abstract

Intermetallic titanium aluminide (TiAl) alloys are considered attractive materials for high-temperature applications in aerospace, automotive, and energy industries. Additive manufacturing is a promising way of producing complex TiAl-alloy parts; however, it remains challenging due to brittleness of this alloy. While high-temperature preheating can mitigate cracking during selective laser melting, the microstructure of TiAl-alloys still needs to be optimized to achieve better mechanical performance. In this work, multiple laser exposures were used during selective laser melting of TiAl-based alloy to tailor its microstructure. Applying additional laser exposure of up to 20 times per layer induced an in situ heat treatment, which allowed to modify volume fraction and size of different phases. Microstructure, phase and chemical composition, and hardness of TiAl-alloys were investigsated with regards to several laser exposures during the selective laser melting process.

Original language	English
Title of host publication	TMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings
Place of Publication	Cham, Switzerland
Publisher	Springer
Pages	197-204
ISBN (Electronic)	978-3-030-65261-6
ISBN (Print)	978-3-030-65260-9
DOIs	https://doi.org/10.1007/978-3-030-65261-6_18
Publication status	Published - 2021
Event	150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021 - Pittsburgh, United States Duration: 15 Mar 2021 → 18 Mar 2021

Publication series

Name	Minerals, Metals and Materials Series
Volume	5
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021
Country/Territory	United States
City	Pittsburgh
Period	15/03/21 → 18/03/21

Keywords

Additive manufacturing
In situ heat treatment
Intermetallic
Selective laser melting
TiAl alloy

Access to Document

10.1007/978-3-030-65261-6_18

Cite this

Polozov, I., Kantyukov, A., Popovich, A., & Popovich, V. (2021). Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure. In TMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings (pp. 197-204). (Minerals, Metals and Materials Series; Vol. 5). Springer. https://doi.org/10.1007/978-3-030-65261-6_18

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title = "Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure",

abstract = "Intermetallic titanium aluminide (TiAl) alloys are considered attractive materials for high-temperature applications in aerospace, automotive, and energy industries. Additive manufacturing is a promising way of producing complex TiAl-alloy parts; however, it remains challenging due to brittleness of this alloy. While high-temperature preheating can mitigate cracking during selective laser melting, the microstructure of TiAl-alloys still needs to be optimized to achieve better mechanical performance. In this work, multiple laser exposures were used during selective laser melting of TiAl-based alloy to tailor its microstructure. Applying additional laser exposure of up to 20 times per layer induced an in situ heat treatment, which allowed to modify volume fraction and size of different phases. Microstructure, phase and chemical composition, and hardness of TiAl-alloys were investigsated with regards to several laser exposures during the selective laser melting process.",

keywords = "Additive manufacturing, In situ heat treatment, Intermetallic, Selective laser melting, TiAl alloy",

author = "Igor Polozov and Artem Kantyukov and Anatoly Popovich and Vera Popovich",

year = "2021",

doi = "10.1007/978-3-030-65261-6_18",

language = "English",

isbn = "978-3-030-65260-9",

series = "Minerals, Metals and Materials Series",

publisher = "Springer",

pages = "197--204",

booktitle = "TMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings",

note = "150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021 ; Conference date: 15-03-2021 Through 18-03-2021",

}

Polozov, I, Kantyukov, A, Popovich, A & Popovich, V 2021, Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure. in TMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings. Minerals, Metals and Materials Series, vol. 5, Springer, Cham, Switzerland, pp. 197-204, 150th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2021, Pittsburgh, United States, 15/03/21. https://doi.org/10.1007/978-3-030-65261-6_18

Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure. / Polozov, Igor; Kantyukov, Artem; Popovich, Anatoly et al.
TMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings. Cham, Switzerland: Springer, 2021. p. 197-204 (Minerals, Metals and Materials Series; Vol. 5).

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

TY - GEN

T1 - Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure

AU - Polozov, Igor

AU - Kantyukov, Artem

AU - Popovich, Anatoly

AU - Popovich, Vera

PY - 2021

Y1 - 2021

N2 - Intermetallic titanium aluminide (TiAl) alloys are considered attractive materials for high-temperature applications in aerospace, automotive, and energy industries. Additive manufacturing is a promising way of producing complex TiAl-alloy parts; however, it remains challenging due to brittleness of this alloy. While high-temperature preheating can mitigate cracking during selective laser melting, the microstructure of TiAl-alloys still needs to be optimized to achieve better mechanical performance. In this work, multiple laser exposures were used during selective laser melting of TiAl-based alloy to tailor its microstructure. Applying additional laser exposure of up to 20 times per layer induced an in situ heat treatment, which allowed to modify volume fraction and size of different phases. Microstructure, phase and chemical composition, and hardness of TiAl-alloys were investigsated with regards to several laser exposures during the selective laser melting process.

AB - Intermetallic titanium aluminide (TiAl) alloys are considered attractive materials for high-temperature applications in aerospace, automotive, and energy industries. Additive manufacturing is a promising way of producing complex TiAl-alloy parts; however, it remains challenging due to brittleness of this alloy. While high-temperature preheating can mitigate cracking during selective laser melting, the microstructure of TiAl-alloys still needs to be optimized to achieve better mechanical performance. In this work, multiple laser exposures were used during selective laser melting of TiAl-based alloy to tailor its microstructure. Applying additional laser exposure of up to 20 times per layer induced an in situ heat treatment, which allowed to modify volume fraction and size of different phases. Microstructure, phase and chemical composition, and hardness of TiAl-alloys were investigsated with regards to several laser exposures during the selective laser melting process.

KW - Additive manufacturing

KW - In situ heat treatment

KW - Intermetallic

KW - Selective laser melting

KW - TiAl alloy

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BT - TMS 2021 150th Annual Meeting and Exhibition Supplemental Proceedings

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Y2 - 15 March 2021 through 18 March 2021

ER -

Tailoring Microstructure of Selective Laser Melted TiAl-Alloy with In-Situ Heat Treatment via Multiple Laser Exposure

Abstract

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Keywords

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