Powder Metallurgy Processing and Mechanical Properties of Controlled Ti-24Nb-4Zr-8Sn Heterogeneous Microstructures

Fer, Benoît; Tingaud, David; Hocini, A.; Hao, Yulin; Leroy, Éric; Prima, Frédéric; Dirras, G.

doi:10.3390/met10121626

Cited by 10 publications

(4 citation statements)

References 55 publications

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“…Actually, several microstructural features have been investigated and modified by changing the processing parameters, e.g. grain sizes in both shell and core, chemical concentrations, and phase precipitation [20].…”

Section: Mechanical Properties and Strength Of Pm Gearsmentioning

confidence: 99%

Using powder metal gears in industrial applications- A review

Mohammed¹

2023

Advanced Topics in Mechanics of Materials, Structures and Construction

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Abstract. Due to the high performance, lightweight, competitiveness and net shape of the parts produced using sintered Powder Metallurgy (PM), PM-based products are used in different industrial applications. PM method offers high precision and repeatability, maximum material utilization, tailored shape properties, freedom of design, cost efficiency, and sustainability. These advantages are driving the ongoing demand for PM products and for the PM method as a good alternative to the conventional gear production methods. The use of PM is confirmed as an applicable technology for gear production. However, the strength and NVH characteristics of PM-products still require more investigation. In the current paper, the mechanical properties, strength and NVH characteristics are presented and discussed. The paper concludes based on the presented overview of the applicability of PM gears in the industry, further research investigation is needed on both the system and component levels to improve the durability and NVH behavior which are important for extending the PM parts’ application. Moreover, the sustainability aspects of powder metallurgy technology should be emphasized.

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Section: Mechanical Properties and Strength Of Pm Gearsmentioning

confidence: 99%

Using powder metal gears in industrial applications- A review

Mohammed¹

2023

Advanced Topics in Mechanics of Materials, Structures and Construction

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“…Bordbar-Khiabani et al [ 16 ] developed Ti-Nb-Zr-Si alloy, which exhibit superior corrosion resistance and favorable cell-materials interactions in vitro. Hao et al devised the Ti-24Nb-4Zr-8Sn (wt.%) alloy, which is known as the representative of the next generation of medical materials because of its excellent mechanical properties and biocompatibility [ 17 , 18 ]. First of all, polycrystalline Ti2448 has high strength (~1150 MPa), low elastic modulus (~56 GPa), large recoverable strain (~3.3%), and a weak grain refinement strengthening effect [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, there is still an urgent need to further develop new type titanium alloys. First, the elastic modulus of titanium alloy implants (~110 GPa) is much higher than that of human bone (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) [8,9]. Orthopedic implants with incompatible elastic modulus could generate stress shielding after implantation, leading to loosening or fracture of the implant in the human body [10,11].…”

Section: Introductionmentioning

confidence: 99%

Fabricated High-Strength, Low-Elastic Modulus Biomedical Ti-24Nb-4Zr-8Sn Alloy via Powder Metallurgy

et al. 2023

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With the huge demands of an aging society, it is urgent to develop a new generation of non-toxic titanium alloy to match the modulus of human bone. Here, we prepared bulk Ti2448 alloys by powder metallurgy technology, and focused on the influence of the sintering process on the porosity, phase composition, and mechanical properties of the initial sintered samples. Furthermore, we performed solution treatment on the samples under different sintering parameters to further adjust the microstructure and phase composition, so as to achieve strength enhancement and reduction of Young’s modulus. Solution treatment can effectively inhibit the continuous α phase precipitated along the grain boundaries of the β matrix, which is beneficial to the fracture resistance. Therefore, the water-quenched sample exhibits good mechanical properties due to the absence of acicular α-phase. Samples sintered at 1400℃ and subsequently water quenched have excellent comprehensive mechanical properties, which benefit from high porosity and the smaller feature size of microstructure. To be specific, the compressive yield stress is 1100 MPa, the strain at fracture is 17.5%, and the Young’s modulus is 44 GPa, which are more applicable to orthopedic implants. Finally, the relatively mature sintering and solution treatment process parameters were screened out for reference in actual production.

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“…PM is a technology applied to many metals, such as steel [28][29][30][31], stainless steel [32][33][34], aluminium [35,36], copper [37], titanium [38][39][40][41], and magnesium [42,43], etc. Metal powders can be pre-alloyed [44,45] or mechanically alloyed [34,46]; it depends on the application sought.…”

Section: Introductionmentioning

confidence: 99%

One-Step Enameling and Sintering of Low-Carbon Steels

Martínez

Abenójar

Bahrami

et al. 2021

Metals

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Powder technology allows manufacturing complex components with small tolerances, saving material without subsequent machining. There is a growing trend in using sintered steel components in the automotive industry. Within 2020, about 2544 million US dollars was invested for manufacturing sintered components. Not only does this industry uses steel components, but the gas cooker industry also uses steel in its burners since they are robust and usually demanded by Americans, with forecasts of 1097 million gas cookers in 2020. Steel gas burners have a ceramic coating on their surface, which means that the burner is manufactured in two stages (casting and enameling). This work aims to manufacture the gas burners by powder metallurgy, enameling and sintering processes in a single step. To achieve this aim, the ASC100.29 iron powder has been characterized (flow rate, relative density and morphology); subsequently, the most suitable parameters for its compaction and an adequate sintering temperature were studied. Single-step sintering and enameling was achieved by compacting iron powder at 500 MPa and sintering at 850 °C for 5 min. The necessary porosity for mechanical anchoring of the coating to the substrate is achieved at this sintering temperature. Bending resistance tests, scratching, degradation under high temperature and basic solution and scanning electron microscopy were used to characterize and validate the obtained samples.

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Powder Metallurgy Processing and Mechanical Properties of Controlled Ti-24Nb-4Zr-8Sn Heterogeneous Microstructures

Cited by 10 publications

References 55 publications

Using powder metal gears in industrial applications- A review

Using powder metal gears in industrial applications- A review

Fabricated High-Strength, Low-Elastic Modulus Biomedical Ti-24Nb-4Zr-8Sn Alloy via Powder Metallurgy

One-Step Enameling and Sintering of Low-Carbon Steels

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