Microstructure and properties of TiAl processed via an electron beam powder bed fusion capsule technology

Bieske, Julia; Franke, Martin; Schloffer, Martin; Körner, Carolin

doi:10.1016/j.intermet.2020.106929

Cited by 29 publications

(26 citation statements)

References 30 publications

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“…Contradicting the claims of Hayes et al [8], the various plots (Figs. [1][2][3][4][5][6], in the present discussion suggest that:…”

Section: Discussionsupporting

confidence: 52%

“…A series of reports on room temperature tensile deformation behaviour of γ-TiAl alloys show that the near-γ, two phase compositions having Al contents around 48 at.% possess the highest strengths and ductilities [1]- [3], [11]- [18]. Extensive creep deformation studies have been c arried out on a number of two phase near-γ TiAI alloys produced by various processing routes [8], [19]- [29].…”

Section: Introductionmentioning

confidence: 99%

“…Extensive creep deformation studies have been c arried out on a number of two phase near-γ TiAI alloys produced by various processing routes [8], [19]- [29]. In addition, compression creep studies have been carried out on a number of binary single phase γ-TiAl alloys and a number of literatures have reported that minimum strain rates during creep testing at different regimes of temperature and stress, is hugely dependent on the grain size of materials [1], [8], [19], [30], [31]. Minimum strain rate of such intermetallic alloys may be defined in terms of Mukherjee-Bird-Dorn equation [32]- [34].…”

Section: Introductionmentioning

confidence: 99%

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On the Tensile Creep Deformation Behaviour of Wrought Single-phase γ-TiAl

Saha¹

2021

Preprint

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Creep deformation behaviour in single phase γ-TiAl alloy has been an extensively studied topic since the late 1970s. A lot of literatures have reported creep behaviour of γ-TiAl alloys, manufactured using different processing techniques [1]–[7]. The present discussion revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase γ-TiAl alloy by Hayes et al. [8] and is aimed to develop an understanding of steady state creep, through strain vs strain rate and strain vs ln(strain rate) plots. Besides, it also attempts to study the variation of stress exponent with temperature between 760-900⁰C and also, to determine activation energies using the two most common approaches, namely: Zener-Hollomon (Z-H) [9] and Sherby-Dorn (S-D, temperature compensated time approach) [10] for stress levels of 69 and 103.4 MPa between 760-900⁰C.

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“…Contradicting the claims of Hayes et al [8], the various plots (Figs. [1][2][3][4][5][6], in the present discussion suggest that:…”

Section: Discussionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On the Tensile Creep Deformation Behaviour of Wrought Single-phase γ-TiAl

Saha¹

2021

Preprint

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confidence: 99%

A brief discussion on the tensile creep deformation behaviour of wrought single-phase γ-TiAl

Saha

2021

Materials Today: Proceedings

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Creep deformation behaviour in single phase c-TiAl alloy has been an extensively studied topic since the late 1970 s. A lot of literatures have reported creep behaviour of c-TiAl alloys, manufactured using different processing techniques [1][2][3][4][5][6][7]. The present discussion revisits the original work on understanding the tensile creep deformation behaviour of wrought single-phase c-TiAl alloy by Hayes et al. [8] and is aimed to develop an understanding of steady state creep, through strain vs strain rate and strain vs ln(strain rate) plots. Besides, it also attempts to study the variation of stress exponent with temperature between 760 and 900⁰C and also, to determine activation energies using the two most common approaches, namely: Zener-Hollomon (Z-H) [9] and Sherby-Dorn (S-D, temperature compensated time approach) [10] for stress levels of 69.4 and 103.4 MPa between 760 and 900⁰C.

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“…The quality of additively manufactured implants highly depends on the selected additive manufacturing technique and the quality of titanium and its alloy powders. Additive manufacturing techniques employed to fabricate the biomaterials include directed energy deposition [ 171 ], laser-based powder bed fusion of metals (PBF-LB/M) [ 172 ], powder fed system of binder jetting [ 173 ], electron beam powder bed fusion of metals (PBF-EB/M) [ 174 ], plasma atomization [ 175 ], gas atomization [ 176 ], and plasma rotating electrode process [ 177 ].…”

Section: Advanced Manufacturing (Am) Of Titanium Alloys For Biomedical Applicationmentioning

confidence: 99%

A state-of-the-art review of the fabrication and characteristics of titanium and its alloys for biomedical applications

et al. 2021

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Commercially pure titanium and titanium alloys have been among the most commonly used materials for biomedical applications since the 1950s. Due to the excellent mechanical tribological properties, corrosion resistance, biocompatibility, and antibacterial properties of titanium, it is getting much attention as a biomaterial for implants. Furthermore, titanium promotes osseointegration without any additional adhesives by physically bonding with the living bone at the implant site. These properties are crucial for producing high-strength metallic alloys for biomedical applications. Titanium alloys are manufactured into the three types of α, β, and α + β. The scientific and clinical understanding of titanium and its potential applications, especially in the biomedical field, are still in the early stages. This review aims to establish a credible platform for the current and future roles of titanium in biomedicine. We first explore the developmental history of titanium. Then, we review the recent advancement of the utility of titanium in diverse biomedical areas, its functional properties, mechanisms of biocompatibility, host tissue responses, and various relevant antimicrobial strategies. Future research will be directed toward advanced manufacturing technologies, such as powder-based additive manufacturing, electron beam melting and laser melting deposition, as well as analyzing the effects of alloying elements on the biocompatibility, corrosion resistance, and mechanical properties of titanium. Moreover, the role of titania nanotubes in regenerative medicine and nanomedicine applications, such as localized drug delivery system, immunomodulatory agents, antibacterial agents, and hemocompatibility, is investigated, and the paper concludes with the future outlook of titanium alloys as biomaterials. Graphic abstract

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Microstructure and properties of TiAl processed via an electron beam powder bed fusion capsule technology

Cited by 29 publications

References 30 publications

On the Tensile Creep Deformation Behaviour of Wrought Single-phase γ-TiAl

On the Tensile Creep Deformation Behaviour of Wrought Single-phase γ-TiAl

A brief discussion on the tensile creep deformation behaviour of wrought single-phase γ-TiAl

A state-of-the-art review of the fabrication and characteristics of titanium and its alloys for biomedical applications

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