Recent Topics of Titanium Research and Development in Japan

Niinomi, Mitsuo; Kagami, Kazuo

doi:10.1002/9781119296126.ch4

Cited by 3 publications

(1 citation statement)

References 33 publications

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“…Some of them, e.g. two-phase Ti-9 or Ti-531C alloys have already found their application in the aircraft sector [13]. The improved properties of titanium and titanium alloys containing 0.2-0.5 wt.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Beta 21S Alloy with 0.2 wt. % of Carbon

Szkliniarz

2016

SSP

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Taking into account the high requirements of new structural materials the development of high-strength and high-temperature alloys based on titanium is a subject of great scientific interest. Carbon has usually been regarded as an impurity of titanium alloys. Increasingly however, it begins to play an important role as alloy addition and, taking into account its price, it is consistent with the global cost-cutting trend for production and processing of new alloys with improved properties. The addition of carbon creates new application opportunities for titanium alloys. The relationship between mechanical properties and microstructure of Beta 21S alloy with carbon addition were considered in this study. The alloy was produced traditionally by vacuum induction melting in cold crucible furnace and hot-deformed with further heat treatment. The effect of heat treatment on the conventional strength and creep resistance of researched alloy was also determined.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Properties of Beta 21S Alloy with 0.2 wt. % of Carbon

Szkliniarz

2016

SSP

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Manufacturing of High Quality Titanium Thin Foil by Electrodeposition Route

et al. 2020

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To challenge the significant reduction of manufacturing cost of Ti thin sheet or foil in the future, manufacturing of Ti foil by electrodeposition route was studied with emphasizing on factors affecting quality of the foil and separability from Mo cathode. Current density was one of the strong factors affecting soundness of deposited Ti foil and its separability from the cathode. Electrolyte bath temperature also affected soundness and separability of deposited Ti foil. Separability was closely related to interdiffusion distance of Ti and Mo, that is, shorter diffusion distance, which was brought by low temperature and low current density, led to good separability as well as good surface quality. By reflecting above knowledge, post card size Ti foil of around 0.1 mm in thickness was successfully obtained. It had good quality and could be separated from the cathode by hand. O and Fe contents were drastically decreased by this process.

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A Novel Process to Produce Ti Parts from Powder Metallurgy with Advanced Properties for Aeronautical Applications

et al. 2023

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Titanium and its alloys have excellent corrosion resistance, heat, and fatigue tolerance, and their strength-to-weight ratio is one of the highest among metals. This combination of properties makes them ideal for aerospace applications; however, high manufacturing costs hinder their widespread use compared to other metals such as aluminum alloys and steels. Powder metallurgy (PM) is a greener and more cost and energy-efficient method for the production of near-net-shape parts compared to traditional ingot metallurgy, especially for titanium parts. In addition, it allows us to synthesize special microstructures, which result in outstanding mechanical properties without the need for alloying elements. The most commonly used Ti alloy is the Ti6Al4V grade 5. This workhorse alloy ensures outstanding mechanical properties, demonstrating a strength which is at least twice that of commercially pure titanium (CP-Ti) grade 2 and comparable to the strength of hardened stainless steels. In the present research, different mixtures of both milled and unmilled Cp-Ti grade 2 powder were utilized using the PM method, aiming to synthesize samples with high mechanical properties comparable to those of high-strength alloys such as Ti6Al4V. The results showed that the fine nanoparticles significantly enhanced the strength of the material, while in several cases the material exceeded the values of the Ti6Al4V alloy. The produced sample exhibited a maximum compressive yield strength (1492 MPa), contained 10 wt.% of fine (milled) particles (average particle size: 3 μm) and was sintered at 900 °C for one hour.

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Recent Topics of Titanium Research and Development in Japan

Abstract: This plenary paper describes the research and development of titanium and its alloys as well as progress in Japanese titanium industries and markets.

Cited by 3 publications

References 33 publications

Microstructure and Properties of Beta 21S Alloy with 0.2 wt. % of Carbon

Microstructure and Properties of Beta 21S Alloy with 0.2 wt. % of Carbon

Manufacturing of High Quality Titanium Thin Foil by Electrodeposition Route

A Novel Process to Produce Ti Parts from Powder Metallurgy with Advanced Properties for Aeronautical Applications

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