High strength and ductile binary Ti-Fe composite alloy

Dmitri V. Louzguine; Hidemi Kato; Akihisa Inoue

doi:10.1016/j.jallcom.2004.03.114

High strength and ductile binary Ti-Fe composite alloy

Dmitri V. Louzguine, Hidemi Kato, Akihisa Inoue

Research output: Contribution to journal › Letter › peer-review

63 Citations (Scopus)

Abstract

The relatively low density of Ti (4.5 Mg/m³) implies high strength/density ratio for Ti-based alloys. A composite Ti₆₅Fe ₃₅ alloy produced in the shape of arc-melted ingot of about 20mm in diameter and 10mm in height exhibits a high mechanical strength of 2.2 GPa at 6.7% ductility and a Young's modulus of 149 GPa. Its microstructure consists of the cubic TiFe phase and a supersaturated BCC β-Ti solid solution. The formation of a supersaturated β-Ti solid solution and the disperse eutectic structure obtained result in a high strength of the Ti-Fe alloy which in addition to that has much higher ductility compared to that of nanostructured and glassy alloys. The Ti-Fe alloy is characterized by low cost of the alloying elements and does not require an additional injection mould casting procedure.

Original language	English
Pages (from-to)	L1-L3
Journal	Journal of Alloys and Compounds
Volume	384
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2004.03.114
Publication status	Published - 2004 Dec 14

Keywords

Mechanical properties
Scanning electron microscopy
Ti-alloy
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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abstract = "The relatively low density of Ti (4.5 Mg/m3) implies high strength/density ratio for Ti-based alloys. A composite Ti65Fe 35 alloy produced in the shape of arc-melted ingot of about 20mm in diameter and 10mm in height exhibits a high mechanical strength of 2.2 GPa at 6.7% ductility and a Young's modulus of 149 GPa. Its microstructure consists of the cubic TiFe phase and a supersaturated BCC β-Ti solid solution. The formation of a supersaturated β-Ti solid solution and the disperse eutectic structure obtained result in a high strength of the Ti-Fe alloy which in addition to that has much higher ductility compared to that of nanostructured and glassy alloys. The Ti-Fe alloy is characterized by low cost of the alloying elements and does not require an additional injection mould casting procedure.",

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T1 - High strength and ductile binary Ti-Fe composite alloy

AU - Louzguine, Dmitri V.

AU - Kato, Hidemi

AU - Inoue, Akihisa

PY - 2004/12/14

Y1 - 2004/12/14

N2 - The relatively low density of Ti (4.5 Mg/m3) implies high strength/density ratio for Ti-based alloys. A composite Ti65Fe 35 alloy produced in the shape of arc-melted ingot of about 20mm in diameter and 10mm in height exhibits a high mechanical strength of 2.2 GPa at 6.7% ductility and a Young's modulus of 149 GPa. Its microstructure consists of the cubic TiFe phase and a supersaturated BCC β-Ti solid solution. The formation of a supersaturated β-Ti solid solution and the disperse eutectic structure obtained result in a high strength of the Ti-Fe alloy which in addition to that has much higher ductility compared to that of nanostructured and glassy alloys. The Ti-Fe alloy is characterized by low cost of the alloying elements and does not require an additional injection mould casting procedure.

AB - The relatively low density of Ti (4.5 Mg/m3) implies high strength/density ratio for Ti-based alloys. A composite Ti65Fe 35 alloy produced in the shape of arc-melted ingot of about 20mm in diameter and 10mm in height exhibits a high mechanical strength of 2.2 GPa at 6.7% ductility and a Young's modulus of 149 GPa. Its microstructure consists of the cubic TiFe phase and a supersaturated BCC β-Ti solid solution. The formation of a supersaturated β-Ti solid solution and the disperse eutectic structure obtained result in a high strength of the Ti-Fe alloy which in addition to that has much higher ductility compared to that of nanostructured and glassy alloys. The Ti-Fe alloy is characterized by low cost of the alloying elements and does not require an additional injection mould casting procedure.

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KW - Scanning electron microscopy

KW - Ti-alloy

KW - X-ray diffraction

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