Formation of Ti-Zr-Ni-Cu-Be-Nb bulk metallic glasses

J. N. Mei; J. S. Li; H. C. Kou; J. L. Soubeyroux; H. Z. Fu; L. Zhou

doi:10.1016/j.jallcom.2007.12.066

Formation of Ti-Zr-Ni-Cu-Be-Nb bulk metallic glasses

J. N. Mei, J. S. Li, H. C. Kou, J. L. Soubeyroux, H. Z. Fu, L. Zhou

School of Materials Sience and Engineering

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

14 Scopus citations

Abstract

The investigations of the phase constitutes and microstructure were performed on as-cast (Ti₄₀Zr₂₅Ni₈Cu₉Be₁₈)_100-xNb_x (x = 0, 3, 5, 8, 10) (Ø 3) glass forming alloys. Large quantities of icosahedral quasicrystals are found to distribute in the glassy matrix of alloys with Nb content 3 and 5 at.%, fully amorphous phase with 8 at.% Nb, and a few nanocrystals corresponding to a CuTi-phase precipitating in the glassy matrix with 10 at.% Nb. In addition, 8 at.% Nb-containing alloy exhibits relatively good glass forming ability as well as Nb-free alloy. The activation energy for the first crystallization of this alloy is 249.80 kJ/mol, larger than that of the Nb-free alloy; moreover, this alloy possesses higher room temperature compressive fracture strength (2083 MPa), although it exhibits smaller plasticity (2.1%) than that of Nb-free alloy.

Original language	English
Pages (from-to)	235-240
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	467
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.12.066
State	Published - 7 Jan 2009

Keywords

Metallic glasses
Microstructure
Phase transitions
Precipitation
Quasicrystals
Ti alloys

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title = "Formation of Ti-Zr-Ni-Cu-Be-Nb bulk metallic glasses",

abstract = "The investigations of the phase constitutes and microstructure were performed on as-cast (Ti40Zr25Ni8Cu9Be18)100-xNbx (x = 0, 3, 5, 8, 10) ({\O} 3) glass forming alloys. Large quantities of icosahedral quasicrystals are found to distribute in the glassy matrix of alloys with Nb content 3 and 5 at.%, fully amorphous phase with 8 at.% Nb, and a few nanocrystals corresponding to a CuTi-phase precipitating in the glassy matrix with 10 at.% Nb. In addition, 8 at.% Nb-containing alloy exhibits relatively good glass forming ability as well as Nb-free alloy. The activation energy for the first crystallization of this alloy is 249.80 kJ/mol, larger than that of the Nb-free alloy; moreover, this alloy possesses higher room temperature compressive fracture strength (2083 MPa), although it exhibits smaller plasticity (2.1%) than that of Nb-free alloy.",

keywords = "Metallic glasses, Microstructure, Phase transitions, Precipitation, Quasicrystals, Ti alloys",

author = "Mei, {J. N.} and Li, {J. S.} and Kou, {H. C.} and Soubeyroux, {J. L.} and Fu, {H. Z.} and L. Zhou",

year = "2009",

month = jan,

day = "7",

doi = "10.1016/j.jallcom.2007.12.066",

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AU - Mei, J. N.

AU - Li, J. S.

AU - Kou, H. C.

AU - Soubeyroux, J. L.

AU - Fu, H. Z.

AU - Zhou, L.

PY - 2009/1/7

Y1 - 2009/1/7

N2 - The investigations of the phase constitutes and microstructure were performed on as-cast (Ti40Zr25Ni8Cu9Be18)100-xNbx (x = 0, 3, 5, 8, 10) (Ø 3) glass forming alloys. Large quantities of icosahedral quasicrystals are found to distribute in the glassy matrix of alloys with Nb content 3 and 5 at.%, fully amorphous phase with 8 at.% Nb, and a few nanocrystals corresponding to a CuTi-phase precipitating in the glassy matrix with 10 at.% Nb. In addition, 8 at.% Nb-containing alloy exhibits relatively good glass forming ability as well as Nb-free alloy. The activation energy for the first crystallization of this alloy is 249.80 kJ/mol, larger than that of the Nb-free alloy; moreover, this alloy possesses higher room temperature compressive fracture strength (2083 MPa), although it exhibits smaller plasticity (2.1%) than that of Nb-free alloy.

AB - The investigations of the phase constitutes and microstructure were performed on as-cast (Ti40Zr25Ni8Cu9Be18)100-xNbx (x = 0, 3, 5, 8, 10) (Ø 3) glass forming alloys. Large quantities of icosahedral quasicrystals are found to distribute in the glassy matrix of alloys with Nb content 3 and 5 at.%, fully amorphous phase with 8 at.% Nb, and a few nanocrystals corresponding to a CuTi-phase precipitating in the glassy matrix with 10 at.% Nb. In addition, 8 at.% Nb-containing alloy exhibits relatively good glass forming ability as well as Nb-free alloy. The activation energy for the first crystallization of this alloy is 249.80 kJ/mol, larger than that of the Nb-free alloy; moreover, this alloy possesses higher room temperature compressive fracture strength (2083 MPa), although it exhibits smaller plasticity (2.1%) than that of Nb-free alloy.

KW - Metallic glasses

KW - Microstructure

KW - Phase transitions

KW - Precipitation

KW - Quasicrystals

KW - Ti alloys

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DO - 10.1016/j.jallcom.2007.12.066

M3 - 文章

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Formation of Ti-Zr-Ni-Cu-Be-Nb bulk metallic glasses

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