The mechanical cycling behavior of TiNi based crystal/glassy alloy in the superelastic mode

J. Jiang; D. X. Wei; T. Wada; D. V. Louzguine-Luzgin; H. Kato

doi:10.1016/j.jallcom.2018.07.255

The mechanical cycling behavior of TiNi based crystal/glassy alloy in the superelastic mode

J. Jiang, D. X. Wei, T. Wada, D. V. Louzguine-Luzgin, H. Kato

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

3 Citations (Scopus)

Abstract

We designed TiNi bulk metallic glass composite (BMGC) which has both a glassy phase and a crystalline phase. The TiNi BMGC undergoes a martensitic transformation during deformation, exhibits the superelastic behavior and excellent mechanical properties: strength of 2.5 GPa, ductility of more than 20%. It is known that mechanical-fatigue is an important feature which affects the martensitic transformation during superelastic cyclic loading. Comparison of the fatigue performances in TiNi dual-phase alloy and TiNi fully crystalline alloy demonstrates that the amorphous phase acts as the barrier and sinking of the dislocation slipping and promotes martensite-austenite phase transition during the superelastic cycling. The representative BMGCs provide a way to design metallic glasses with high ductility and outstanding anti-fatigue properties.

Original language	English
Pages (from-to)	176-180
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	768
DOIs	https://doi.org/10.1016/j.jallcom.2018.07.255
Publication status	Published - 2018 Nov 5

Keywords

Bulk metallic glass composite
Mechanical cycling
Superelastic

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "The mechanical cycling behavior of TiNi based crystal/glassy alloy in the superelastic mode",

abstract = "We designed TiNi bulk metallic glass composite (BMGC) which has both a glassy phase and a crystalline phase. The TiNi BMGC undergoes a martensitic transformation during deformation, exhibits the superelastic behavior and excellent mechanical properties: strength of 2.5 GPa, ductility of more than 20%. It is known that mechanical-fatigue is an important feature which affects the martensitic transformation during superelastic cyclic loading. Comparison of the fatigue performances in TiNi dual-phase alloy and TiNi fully crystalline alloy demonstrates that the amorphous phase acts as the barrier and sinking of the dislocation slipping and promotes martensite-austenite phase transition during the superelastic cycling. The representative BMGCs provide a way to design metallic glasses with high ductility and outstanding anti-fatigue properties.",

keywords = "Bulk metallic glass composite, Mechanical cycling, Superelastic",

author = "J. Jiang and Wei, {D. X.} and T. Wada and Louzguine-Luzgin, {D. V.} and H. Kato",

note = "Funding Information: This work was partly supported by Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development, IMR, Tohoku University, Japan . The work also supported by the Chinese Scholarship Council .",

year = "2018",

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day = "5",

doi = "10.1016/j.jallcom.2018.07.255",

language = "English",

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T1 - The mechanical cycling behavior of TiNi based crystal/glassy alloy in the superelastic mode

AU - Jiang, J.

AU - Wei, D. X.

AU - Wada, T.

AU - Louzguine-Luzgin, D. V.

AU - Kato, H.

N1 - Funding Information: This work was partly supported by Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development, IMR, Tohoku University, Japan . The work also supported by the Chinese Scholarship Council .

PY - 2018/11/5

Y1 - 2018/11/5

N2 - We designed TiNi bulk metallic glass composite (BMGC) which has both a glassy phase and a crystalline phase. The TiNi BMGC undergoes a martensitic transformation during deformation, exhibits the superelastic behavior and excellent mechanical properties: strength of 2.5 GPa, ductility of more than 20%. It is known that mechanical-fatigue is an important feature which affects the martensitic transformation during superelastic cyclic loading. Comparison of the fatigue performances in TiNi dual-phase alloy and TiNi fully crystalline alloy demonstrates that the amorphous phase acts as the barrier and sinking of the dislocation slipping and promotes martensite-austenite phase transition during the superelastic cycling. The representative BMGCs provide a way to design metallic glasses with high ductility and outstanding anti-fatigue properties.

AB - We designed TiNi bulk metallic glass composite (BMGC) which has both a glassy phase and a crystalline phase. The TiNi BMGC undergoes a martensitic transformation during deformation, exhibits the superelastic behavior and excellent mechanical properties: strength of 2.5 GPa, ductility of more than 20%. It is known that mechanical-fatigue is an important feature which affects the martensitic transformation during superelastic cyclic loading. Comparison of the fatigue performances in TiNi dual-phase alloy and TiNi fully crystalline alloy demonstrates that the amorphous phase acts as the barrier and sinking of the dislocation slipping and promotes martensite-austenite phase transition during the superelastic cycling. The representative BMGCs provide a way to design metallic glasses with high ductility and outstanding anti-fatigue properties.

KW - Bulk metallic glass composite

KW - Mechanical cycling

KW - Superelastic

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