Ti-Fe-Sn-Nb hypoeutectic alloys with superb yield strength and significant strain-hardening

Guo Hua Zhao; Sergey V. Ketov; Huahai Mao; Annika Borgenstam; Dmitri V. Louzguine-Luzgin

doi:10.1016/j.scriptamat.2017.03.033

Ti-Fe-Sn-Nb hypoeutectic alloys with superb yield strength and significant strain-hardening

Guo Hua Zhao, Sergey V. Ketov, Huahai Mao, Annika Borgenstam, Dmitri V. Louzguine-Luzgin

Advanced Institute for Materials Research (AIMR)

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

14 Citations (Scopus)

Abstract

In this letter new Ti-Fe-Sn-Nb hypoeutectic alloy comprised of primary dendritic β-Ti and ultrafine (β-Ti + TiFe) eutectic was developed showing superior mechanical properties. The as-cast Ti₆₇Fe₂₇Sn₃Nb₃ (at.%) alloy exhibited exceptionally high yield stress (2.18 GPa) comparable to that of bulk metallic glasses. Most importantly, the sample presented significant strain-hardening (320 MPa) and enhanced plasticity. The slip deformation and dislocation accumulation in the β-Ti dendrite contribute to the plasticity and the pronounced strain-hardening, whereas the high strength stems from the ultrafine (β-Ti + TiFe) eutectic structure as well as the solution hardening in the multicomponent system.

Original language	English
Pages (from-to)	59-62
Number of pages	4
Journal	Scripta Materialia
Volume	135
DOIs	https://doi.org/10.1016/j.scriptamat.2017.03.033
Publication status	Published - 2017 Jul 1

Keywords

Hypoeutectic alloys
Mechanical properties, β-Ti dendrite
Ti-Fe-Sn-Nb

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10.1016/j.scriptamat.2017.03.033

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title = "Ti-Fe-Sn-Nb hypoeutectic alloys with superb yield strength and significant strain-hardening",

abstract = "In this letter new Ti-Fe-Sn-Nb hypoeutectic alloy comprised of primary dendritic β-Ti and ultrafine (β-Ti + TiFe) eutectic was developed showing superior mechanical properties. The as-cast Ti67Fe27Sn3Nb3 (at.%) alloy exhibited exceptionally high yield stress (2.18 GPa) comparable to that of bulk metallic glasses. Most importantly, the sample presented significant strain-hardening (320 MPa) and enhanced plasticity. The slip deformation and dislocation accumulation in the β-Ti dendrite contribute to the plasticity and the pronounced strain-hardening, whereas the high strength stems from the ultrafine (β-Ti + TiFe) eutectic structure as well as the solution hardening in the multicomponent system.",

keywords = "Hypoeutectic alloys, Mechanical properties, β-Ti dendrite, Ti-Fe-Sn-Nb",

author = "Zhao, {Guo Hua} and Ketov, {Sergey V.} and Huahai Mao and Annika Borgenstam and Louzguine-Luzgin, {Dmitri V.}",

note = "Funding Information: Axel Hultgrens Foundation is acknowledged for the financial support to G.-H. Zhao. This research was partly supported by World Premier International Research Center Initiative (WPI), MEXT, Japan. Publisher Copyright: {\textcopyright} 2017 Acta Materialia Inc.",

year = "2017",

month = jul,

day = "1",

doi = "10.1016/j.scriptamat.2017.03.033",

language = "English",

volume = "135",

pages = "59--62",

journal = "Scripta Materialia",

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TY - JOUR

T1 - Ti-Fe-Sn-Nb hypoeutectic alloys with superb yield strength and significant strain-hardening

AU - Zhao, Guo Hua

AU - Ketov, Sergey V.

AU - Mao, Huahai

AU - Borgenstam, Annika

AU - Louzguine-Luzgin, Dmitri V.

N1 - Funding Information: Axel Hultgrens Foundation is acknowledged for the financial support to G.-H. Zhao. This research was partly supported by World Premier International Research Center Initiative (WPI), MEXT, Japan. Publisher Copyright: © 2017 Acta Materialia Inc.

PY - 2017/7/1

Y1 - 2017/7/1

N2 - In this letter new Ti-Fe-Sn-Nb hypoeutectic alloy comprised of primary dendritic β-Ti and ultrafine (β-Ti + TiFe) eutectic was developed showing superior mechanical properties. The as-cast Ti67Fe27Sn3Nb3 (at.%) alloy exhibited exceptionally high yield stress (2.18 GPa) comparable to that of bulk metallic glasses. Most importantly, the sample presented significant strain-hardening (320 MPa) and enhanced plasticity. The slip deformation and dislocation accumulation in the β-Ti dendrite contribute to the plasticity and the pronounced strain-hardening, whereas the high strength stems from the ultrafine (β-Ti + TiFe) eutectic structure as well as the solution hardening in the multicomponent system.

AB - In this letter new Ti-Fe-Sn-Nb hypoeutectic alloy comprised of primary dendritic β-Ti and ultrafine (β-Ti + TiFe) eutectic was developed showing superior mechanical properties. The as-cast Ti67Fe27Sn3Nb3 (at.%) alloy exhibited exceptionally high yield stress (2.18 GPa) comparable to that of bulk metallic glasses. Most importantly, the sample presented significant strain-hardening (320 MPa) and enhanced plasticity. The slip deformation and dislocation accumulation in the β-Ti dendrite contribute to the plasticity and the pronounced strain-hardening, whereas the high strength stems from the ultrafine (β-Ti + TiFe) eutectic structure as well as the solution hardening in the multicomponent system.

KW - Hypoeutectic alloys

KW - Mechanical properties, β-Ti dendrite

KW - Ti-Fe-Sn-Nb

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DO - 10.1016/j.scriptamat.2017.03.033

M3 - Article

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VL - 135

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EP - 62

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Ti-Fe-Sn-Nb hypoeutectic alloys with superb yield strength and significant strain-hardening

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Keywords

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