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High-strength binary Ti-Fe bulk alloys with enhanced ductility

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Abstract

The structure of hypoeutectic, hypereutectic, and eutectic Ti-Fe alloys produced in the shape of arc-melted ingots was found to consist of the ordered Pm-3m TiFe and disordered BCC Im3m ß-Ti solid solution phase. The dimensions of the ingots were about 25–40 mm in diameter and 10–15 mm in height, and their structure was studied by x-ray diffractometry and scanning electron microscopy. The rectangular parallelepiped-shaped samples 2.5 × 2.5 × 5 mm in size cut from the central part of the ingots exhibit a high strength of about 2000 MPa, except for Ti60Fe40, and a certain ductility. The relatively low density of Ti (4.5 Mg/m3) implies high strength/density ratio for the studied alloys. These alloys are characterized by the low cost of the alloying element Fe and, compared to most of the high-strength non-equilibrium materials, do not require additional injection mold casting or rapid solidification procedures.

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Authors and Affiliations

  1. Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan

    Dmitri V. Louzguine, Hidemi Kato & Akihisa Inoue

  2. Research and Development Project, CREST, Japan Science and Technology Agency, Sendai, 985-8577, Japan

    Larissa V. Louzguina

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  1. Dmitri V. Louzguine
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  2. Hidemi Kato
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  3. Larissa V. Louzguina
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  4. Akihisa Inoue
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Correspondence to Dmitri V. Louzguine.

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a)Louzguine is official French spelling. English spelling is Luzgin.

b)Louzguina is official French spelling. English spelling is Luzgina.

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Louzguine, D.V., Kato, H., Louzguina, L.V. et al. High-strength binary Ti-Fe bulk alloys with enhanced ductility. Journal of Materials Research 19, 3600–3606 (2004). https://doi.org/10.1557/JMR.2004.0462

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  • DOI: https://doi.org/10.1557/JMR.2004.0462

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