Fabrication of low-cost beta-type Ti–Mn alloys for biomedical applications by metal injection molding process and their mechanical properties

Santos, Pedro Fernandes; Niinomi, Mitsuo; Liu, Huihong; Cho, Ken; Nakai, Masaaki; Itoh, Yoshinori; Narushima, Takayuki; Ikeda, Masahiko

doi:10.1016/j.jmbbm.2016.02.035

Cited by 85 publications

(76 citation statements)

References 36 publications

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“…Unfortunately, both Nb and Ta are elements regarded as critical materials, meaning that these alloying elements have important applications in various industrial elds and as such have scarcity issues because of their limited amount of natural deposits around the globe 17,18) . In previous studies, Mn was chosen as an alloying element because of its β-stabilizing effect, lower cytotoxicity, and higher availability compared to other alloying elements [19][20][21] . Low-cost Ti-Mn alloys were fabricated using a metal injection molding (MIM) process 21) , a near-net shape advanced powder metallurgy (P/M) fabrication method which reduces the amount of waste material to by as much as 1/5 compared to conventional melting-machining methods 22) , reducing fabrication costs.…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies, Mn was chosen as an alloying element because of its β-stabilizing effect, lower cytotoxicity, and higher availability compared to other alloying elements [19][20][21] . Low-cost Ti-Mn alloys were fabricated using a metal injection molding (MIM) process 21) , a near-net shape advanced powder metallurgy (P/M) fabrication method which reduces the amount of waste material to by as much as 1/5 compared to conventional melting-machining methods 22) , reducing fabrication costs. Ti-9Mn (mass%) showed the best balance of mechanical properties among both the alloys fabricated by cold crucible levitation melting (CCLM) 19) and those fabricated by MIM 21) .…”

Section: Introductionmentioning

confidence: 99%

“…Low-cost Ti-Mn alloys were fabricated using a metal injection molding (MIM) process 21) , a near-net shape advanced powder metallurgy (P/M) fabrication method which reduces the amount of waste material to by as much as 1/5 compared to conventional melting-machining methods 22) , reducing fabrication costs. Ti-9Mn (mass%) showed the best balance of mechanical properties among both the alloys fabricated by cold crucible levitation melting (CCLM) 19) and those fabricated by MIM 21) . Nevertheless, the ductility of the alloys warrants improvement 19,21) .…”

Section: Introductionmentioning

confidence: 99%

“…Ti-9Mn (mass%) showed the best balance of mechanical properties among both the alloys fabricated by cold crucible levitation melting (CCLM) 19) and those fabricated by MIM 21) . Nevertheless, the ductility of the alloys warrants improvement 19,21) . In another recent study, Mo was added as an alloying element to Ti-Mn alloys fabricated by CCLM in order to improve their ductility and the balance of their mechanical properties 23) .…”

Section: Introductionmentioning

confidence: 99%

“…Some other merits of Mo addition to Ti-Mn systems, including improved corrosion properties, were also discussed 23) . Compared to Ti-Mn alloys fabricated by CCLM 19) , fabrication by MIM introduces pores, carbides, and high interstitial impurity contents, which cause a drastic reduction in the tensile ductility of the Ti-Mn alloys 21) . Conversely, Mo addition improves the tensile ductility of alloys fabricated by CCLM by promoting TWIP under tensile deformation.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Mo Addition on the Mechanical Properties and Microstructures of Ti-Mn Alloys Fabricated by Metal Injection Molding for Biomedical Applications

et al. 2017

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Ti-Mn alloys fabricated by metal injection molding (MIM) show promising performance for biomedical applications, but their low ductility (caused by high O content and the presence of pores and carbides) requires improvement. Previously, the addition of Mo to cold crucible levitation melted (CCLM) Ti-Mn alloys ef ciently improved the ductility of those alloys by promoting mechanical twinning. In the present study, Mo was added to Ti-Mn alloys fabricated by MIM. Unlike fabrication by CCLM, fabrication by MIM can produce alloys with a smaller grain size, and also introduce microstructures such as pores and Ti carbides. Thus, in order to investigate how Mo addition interacts with these typical MIM features, four alloys for biomedical applications were fabricated by MIM: Ti-5Mn-3Mo (TMM-53), Ti-5Mn-4Mo (TMM-54), Ti6Mn-3Mo (TMM-63), and Ti-6Mn-4Mo (TMM-64). Their microstructures, mechanical properties, and tensile deformation mechanisms were evaluated. Their hardness values range from 312-359 HV, and their Young s modulus values range from 84-88 GPa; both the Vickers hardness and Young s modulus show little variation among the alloys. Although the alloys show fracture features associated with a predominantly ductile fracture mode and Mo addition successfully promotes mechanical twinning in TMM-54, the elongation of these alloys is still critically low. Compared to the TMM alloys fabricated by CCLM, the TMM alloys fabricated by MIM show slightly lower hardness and Young s modulus, and comparable tensile strength, with their low elongation remaining inadequate for such applications. In particular, TMM-63 shows the best combination of mechanical properties among the present alloys, with an elongation of 4% and an ultimate tensile strength of 1145 MPa.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Mo Addition on the Mechanical Properties and Microstructures of Ti-Mn Alloys Fabricated by Metal Injection Molding for Biomedical Applications

et al. 2017

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Stable Plasmonic Coloration of Versatile Surfaces via Colloidal Monolayer Transfer Printing

et al. 2019

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Preparing nanoscale patterns with bright and high resolution structural colors for object decoration remains a challenge. Herein, the authors propose a strategy for fabricating surface‐universal and large‐area photonic crystal monolayer membrane with stable plasmonic coloration based on polydopamine (PDA) modification, self‐assembly, transfer printing, and e‐beam evaporation. In practice, the membrane is achieved with different diameters of silica and polystyrene (PS) colloidal nanoparticles through layer‐by‐layer (LBL) self‐assembled method. The photonic crystals are prepared on the PDA‐coated substrates and experimental spectra of different periodic plasma substrates with 20 nm‐gold‐coating are obtained and analyzed. Based on this, different plasma display patterns are prepared and solvent‐response plasma pattern is fabricated. Compared with traditional coloration method, this method is low‐cost, stable, and surface‐universal and can be used to proceed large‐area plasmonic coloration, which will be promising in the fields of plasma display, optical sensor and anti‐counterfeiting.

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Behavior of Different β Stabilizers on the Microstructure and Properties of Ternary Ti‐3Sn‐X Alloys

Bolzoni,

Raynova,

Yang

et al. 2023

Adv Eng Mater

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The manufacturing of Ti alloys via powder metallurgy and the development of novel compositions are two strategies to reduce the cost of Ti, which is still the primary factor deterring its wider use in engineering applications. In this study, new Ti alloys based on the combined addition of Sn with Nb, Mo, or Mn are manufactured via powder metallurgy to gain an understanding of the role of these β stabilizers on the performance achievable. It is found that the designed alloys have a fully homogeneous chemistry regardless of their actual composition and a lamellar or β‐type microstructure depending on the actual β stabilizer used. This study confirms that the β‐stabilizing power effect decreases from Mn to Mo and, eventually, Nb. The compressibility and sinterability of the alloys increase with the progressive addition of the selected powders, generally leading to stronger and more ductile materials. It is also found that the proposed Ti‐3Sn‐Mo alloys are characterized by the best strength/ductility pairs compared to a variety of sintered or cast binary/ternary Ti alloys bearing the alloying elements considered in this work.

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Fabrication of low-cost beta-type Ti–Mn alloys for biomedical applications by metal injection molding process and their mechanical properties

Cited by 85 publications

References 36 publications

Effects of Mo Addition on the Mechanical Properties and Microstructures of Ti-Mn Alloys Fabricated by Metal Injection Molding for Biomedical Applications

Effects of Mo Addition on the Mechanical Properties and Microstructures of Ti-Mn Alloys Fabricated by Metal Injection Molding for Biomedical Applications

Stable Plasmonic Coloration of Versatile Surfaces via Colloidal Monolayer Transfer Printing

Behavior of Different β Stabilizers on the Microstructure and Properties of Ternary Ti‐3Sn‐X Alloys

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