Synthesis and characterization of Ti–Ta–Nb–Mn foams

Aguilar, C.; Guerra, Carolina; Lascano, Sheila; Guzmán, Danny; Rojas, Paula; Thirumurugan, M.; Béjar, L.; Medína, A.

doi:10.1016/j.msec.2015.08.053

Cited by 41 publications

(29 citation statements)

References 47 publications

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“…The Tialloyed foams were made primly using by milled alloy powder [27]. Limited attempts are made to make Ti-alloy foams using elemental powder [22][23][24][25]. To the best of our knowledge, so far no attempt has been made to make Ti 6 Al alloy foam using elemental powder and ammonium bicarbonate as space holder.…”

Section: Compression Testmentioning

confidence: 99%

“…As per requirement of bone implant applications in different locations, titanium based alloy foam such as, Ti-34Nb-29Ta-xMn (x: 2%, 4%, 6% wt. Mn) with porosity of 45-50%, Young modulus of 30 GPa and pore size of 165-230 μm were made with space holder technique [22]. Finally sintering was done, where in the sintering temperature were varied to get varying mechanical properties [22].…”

Section: Introductionmentioning

confidence: 99%

“…Mn) with porosity of 45-50%, Young modulus of 30 GPa and pore size of 165-230 μm were made with space holder technique [22]. Finally sintering was done, where in the sintering temperature were varied to get varying mechanical properties [22]. In another report Ti 6 Al7Nb foam with porosity of 70%, pore sizes of 200 μm are made using cold compact pressure of 500 MPa [23].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Strain Rate and Relative Density on the Compressive Deformation of Open Cell Ti6Al Alloy Foam through P/M Route

Dp¹,

Ak²,

Diwakar³

2017

J Appl Mech Eng

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Open cell Ti 6 Al alloy foams of varying porosity fractions have been made using ammonium bicarbonate as space holder through powder metallurgy route. In order to provide the sufficient strength in green compacts 2% of wt.% PVA solution was mixed with elemental metal powder and NH 4 (HCO 3 ) particle prior to cold compaction. Green pallets were sintered at three stages at three different temperatures 600°C, 800°C and 1100°C. XRD and EDX analyses confirmed that no residue of space holder remained in the sintered foam samples. The compressive deformation behavior of Ti 6 Al alloy foams with varying relative densities was conducted under different strain rates (0.01, 0.1, and 1.0 s -1 ). The plateau stress, the Young's modulus and the energy absorption of the foam increase with increase in the relative density following power law relationships. But the densification strain decreases with increases in relative density following a linear relationship. The strain rate sensitivity and the strain rate sensitivity parameter of these foams were also examined, and it was found that the strain rate sensitivity parameters were varying in the range 0.034 to 0.078.

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Section: Compression Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Strain Rate and Relative Density on the Compressive Deformation of Open Cell Ti6Al Alloy Foam through P/M Route

Dp¹,

Ak²,

Diwakar³

2017

J Appl Mech Eng

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“…Due to its biocompatibility with the human body (it is not toxic and is not rejected by the human body), titanium is used in different medical applications including surgical implements and implants, such as joint replacements [9]. CP-Ti is a material widely used in medical applications; however, when the application requires high strength, Ti-6AI-4V alloy is utilized [10].…”

Section: Introductionmentioning

confidence: 99%

“…A general approach to obtaining thermodynamic data of ternary or quaternary systems is by extrapolating constitutive binary data via geometrical models [36]. The Calculation of Phase Diagrams (CALPHAD) [9] method has been widely used to estimate phase stability based on the optimization and extrapolation of experimental phase equilibrium data. When experimental data is not available, the Miedema and Bakker [37][38][39] models can be used to determine thermodynamic properties.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of the Formation of FCC and BCC Solid Solutions of Ti-Based Ternary Alloys by Mechanical Alloying

Aguilar

Martínez

Tello

et al. 2020

Metals

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A thermodynamic analysis of the synthesis of face-centred cubic (fcc) and body-centred cubic (bcc) solid solutions of Ti-based alloys produced by mechanical alloying was performed. Four Ti-based alloys were analysed: (i) Ti-13Ta-3Sn (at.%), (ii) Ti-30Nb-13Ta (at.%), (iii) Ti-20Nb-30Ta (wt. %) and (iv) Ti-33Nb-4Mn (at.%). The milled powders were characterized by X-ray diffraction, and the crystallite size and microstrain were determined using the Rietveld and Williamson-Hall methods. The Gibbs free energy of mixing for the formation of a solid solution of the three ternary systems (Ti-Ta-Sn, Ti-Nb-Ta and Ti-Nb-Mn) was calculated using an extended Miedema's model, applying the Materials Analysis Applying Thermodynamics (MAAT) software. The values of the activity of each component were determined by MAAT. It was found that increasing the density of crystalline defects, such as dislocations and crystallite boundaries, changed the solubility limit in these ternary systems. Therefore, at longer milling times, the Gibbs free energy increases, so there is a driving force to form solid solutions from elemental powders. Finally, there is agreement between experimental and thermodynamic data confirming the formation of solid solutions.Author Contributions: Conceptualization, C.A. and C.M.; methodology, C.A. and F.S.M.; software, C.A.; validation, I.A.; formal Analysis, C.A., C.M. and S.P.; investigation, C.A., F.S.M. and K.T.; writing-original draft preparation, C.A., S.P. and A.D.; writing-review and editing, S.P., A.D., K.T. and I.A.; visualisation, C.A. and I.A.; project administration, C.A.; funding acquisition, C.A. and K.T. All authors have read and agreed to the published version of the manuscript. Funding:The authors would like to acknowledge the financial support received from the FONDECYT project n 1190797 and FONDEQUIP/EQM project n 140095. Conflicts of Interest:The authors declare no conflict of interest.

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B₄C‐Reinforced Al–Zn Foams Having Superior Energy Absorption Efficiency

et al. 2022

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The low density of the aluminium foam and high energy absorption make them favourable for automobile, aerospace, and defence industries. However, the melt route for foam fabrication has challenges in achieving homogeneous distribution of pores. Hence, we have adopted the space holder technique using the powder metallurgy methodology to overcome such a challenge. In the current study, we fabricated Al–Zn alloy foams reinforced with varying volume fractions of B4C particles using NaCl as a space holder implemented by hot pressure‐assisted sintering and dissolution. X‐ray computed tomography revealed a homogeneous distribution of pores. The quasistatic compression studies showed that the samples containing a higher volume fraction of pores exhibited higher energy absorption efficiency in the fabricated foam. The maximum energy absorption efficiency (η) achieved was ≈93% for the pristine Al alloy foam with ≈50% porosity, which is ≈11% higher than the η value of 9 vol% B4C samples with similar porosity. Additionally, B4C particles delay the sudden collapse of cell walls and stabilize the compression behaviour. Adding B4C improves the η and strength at higher relative density. This fabrication methodology would help us develop foams with a homogenous pore distribution and regular geometry, achieving highly desirable mechanical properties.

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Synthesis and characterization of Ti–Ta–Nb–Mn foams

Cited by 41 publications

References 47 publications

Effect of Strain Rate and Relative Density on the Compressive Deformation of Open Cell Ti6Al Alloy Foam through P/M Route

Effect of Strain Rate and Relative Density on the Compressive Deformation of Open Cell Ti6Al Alloy Foam through P/M Route

Thermodynamic Analysis of the Formation of FCC and BCC Solid Solutions of Ti-Based Ternary Alloys by Mechanical Alloying

B₄C‐Reinforced Al–Zn Foams Having Superior Energy Absorption Efficiency

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Synthesis and characterization of Ti–Ta–Nb–Mn foams

Cited by 41 publications

References 47 publications

Effect of Strain Rate and Relative Density on the Compressive Deformation of Open Cell Ti6Al Alloy Foam through P/M Route

Effect of Strain Rate and Relative Density on the Compressive Deformation of Open Cell Ti6Al Alloy Foam through P/M Route

Thermodynamic Analysis of the Formation of FCC and BCC Solid Solutions of Ti-Based Ternary Alloys by Mechanical Alloying

B4C‐Reinforced Al–Zn Foams Having Superior Energy Absorption Efficiency

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Product

Resources

About

B₄C‐Reinforced Al–Zn Foams Having Superior Energy Absorption Efficiency