Novel bainitic Ti alloys designed for additive manufacturing

Ryan Brooke; Duyao Zhang; Dong Qiu; Mark A. Gibson; Edwin LH Mayes; Tomáš Morávek; Balaji V.I. Nithin; Narendraraj Chandran; Rajarshi Banerjee; Mark Easton

doi:10.1016/j.matdes.2024.113176

Novel bainitic Ti alloys designed for additive manufacturing

Ryan Brooke, Duyao Zhang, Dong Qiu, Mark A. Gibson, Edwin LH Mayes, Tomáš Morávek, Balaji V.I. Nithin, Narendraraj Chandran, Rajarshi Banerjee, Mark Easton

Research output: Contribution to journal › Article › peer-review

1 Citation (SciVal)

Abstract

Novel ternary titanium alloys with a bainitic microstructure have been designed specifically for additive manufacturing (AM). The Ti-xCu-yFe alloys take advantage of constitutional supercooling to suppress the growth of large columnar grains usually associated with AM Ti alloys. In the as-built condition the bainitic microstructure consists of a refined α-phase within a matrix of β-phase. The intermetallic phase, Ti2Cu, forms predominantly on the interface of the α- and β-phase and within the β matrix. The high strength of these materials is attributed to the refined α-phase and Ti2Cu particles as well as significant solid solution hardening. This work demonstrates a viable way to fabricate structural components with unique and excellent properties using low-cost elemental powders with AM.

Original language	English
Article number	113176
Journal	Materials & Design
Early online date	19 Jul 2024
DOIs	https://doi.org/10.1016/j.matdes.2024.113176
Publication status	Published - 1 Aug 2024

Data Availability Statement

Data will be made available on request.

Acknowledgements

The authors acknowledge the facilities, and the scientific and technical assistance of the RMIT Advanced Manufacturing Precinct (AMP), and the RMIT Microscopy & Microanalysis Facility (RMMF), at RMIT University.

Funding

D. Z. acknowledges the support of ARC-DECRA grant (Grant number: DE210101503). D. Q. and M. E. appreciate the financial support of ARC Discovery grant (Grant number: DP220101501).

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title = "Novel bainitic Ti alloys designed for additive manufacturing",

abstract = "Novel ternary titanium alloys with a bainitic microstructure have been designed specifically for additive manufacturing (AM). The Ti-xCu-yFe alloys take advantage of constitutional supercooling to suppress the growth of large columnar grains usually associated with AM Ti alloys. In the as-built condition the bainitic microstructure consists of a refined α-phase within a matrix of β-phase. The intermetallic phase, Ti2Cu, forms predominantly on the interface of the α- and β-phase and within the β matrix. The high strength of these materials is attributed to the refined α-phase and Ti2Cu particles as well as significant solid solution hardening. This work demonstrates a viable way to fabricate structural components with unique and excellent properties using low-cost elemental powders with AM.",

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doi = "10.1016/j.matdes.2024.113176",

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T1 - Novel bainitic Ti alloys designed for additive manufacturing

AU - Brooke, Ryan

AU - Zhang, Duyao

AU - Qiu, Dong

AU - Gibson, Mark A.

AU - Mayes, Edwin LH

AU - Morávek, Tomáš

AU - Nithin, Balaji V.I.

AU - Chandran, Narendraraj

AU - Banerjee, Rajarshi

AU - Easton, Mark

PY - 2024/8/1

Y1 - 2024/8/1

N2 - Novel ternary titanium alloys with a bainitic microstructure have been designed specifically for additive manufacturing (AM). The Ti-xCu-yFe alloys take advantage of constitutional supercooling to suppress the growth of large columnar grains usually associated with AM Ti alloys. In the as-built condition the bainitic microstructure consists of a refined α-phase within a matrix of β-phase. The intermetallic phase, Ti2Cu, forms predominantly on the interface of the α- and β-phase and within the β matrix. The high strength of these materials is attributed to the refined α-phase and Ti2Cu particles as well as significant solid solution hardening. This work demonstrates a viable way to fabricate structural components with unique and excellent properties using low-cost elemental powders with AM.

AB - Novel ternary titanium alloys with a bainitic microstructure have been designed specifically for additive manufacturing (AM). The Ti-xCu-yFe alloys take advantage of constitutional supercooling to suppress the growth of large columnar grains usually associated with AM Ti alloys. In the as-built condition the bainitic microstructure consists of a refined α-phase within a matrix of β-phase. The intermetallic phase, Ti2Cu, forms predominantly on the interface of the α- and β-phase and within the β matrix. The high strength of these materials is attributed to the refined α-phase and Ti2Cu particles as well as significant solid solution hardening. This work demonstrates a viable way to fabricate structural components with unique and excellent properties using low-cost elemental powders with AM.

UR - https://doi.org/10.1016/j.matdes.2024.113176

U2 - 10.1016/j.matdes.2024.113176

DO - 10.1016/j.matdes.2024.113176

M3 - Article

SN - 0261-3069

JO - Materials & Design

JF - Materials & Design

M1 - 113176

ER -

Novel bainitic Ti alloys designed for additive manufacturing

Abstract

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