Crystallization behavior of low temperature pre-annealed Zr46.8Ti8.2Ni10CU7.5Be27.5-bulk glass

被引：10

作者：

Mechler, S ^{[1
]}

Wanderka, N ^{[1
]}

Macht, MP ^{[1
]}

机构：

[1] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 375卷

关键词：

metallic bulk glass; ZrTiNiCuBe bulk glass; decomposition and crystallization; quasicrystals; isothermal; low temperature annealing;

D O I：

10.1016/j.msea.2003.10.128

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

During heat treatment of metallic bulk glasses at temperatures below the calorimetric glass transition temperature T, the glasses undergo microstructural alterations indicated by their thermal behavior as observed by DSC, but not discernible by X-ray diffraction (XRD). A reversible enthalpy recovery at T-g indicates a slow, reversible relaxation of the glass into a temperature dependent structural equilibrium state. After prolonged annealing times below T, the crystallization is irreversibly affected, i.e. it starts at a lower temperature, takes a different pathway and ends up in a different crystalline microstructure. This behavior was studied in Zr46.8Ti8.2Ni10Cu7.5Be27.5-bulk glass (V4) after preceding long term annealing well below T-g = 603 K by means of differential scanning calorimeter (DSC), XRD, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and microhardness measurements. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：355 / 358

页数：4

共 15 条

[1] ATOMIC DISPLACEMENTS DURING STRUCTURAL RELAXATION IN A METALLIC-GLASS [J].

BRUNING, R ;

STROMOLSEN, JO .

PHYSICAL REVIEW B, 1990, 41 (05) :2678-2683

[2] A model for the decomposition kinetics of the bulk amorphous Zr41Be22.5Ti14Cu12.5Ni10 alloy [J].

Hermann, H ;

Wiedenmann, A ;

Uebele, P .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (37) :L509-L516

[3] Bulk glass-forming metallic alloys: Science and technology [J].

Johnson, WL .

MRS BULLETIN, 1999, 24 (10) :42-56

[4] Fundamental aspects of bulk metallic glass formation in multicomponent alloys [J].

Johnson, WL .

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2, 1996, 225 :35-49

[5] Concentration and temperature dependence of decomposition in supercooled liquid alloys [J].

Löffler, JF ;

Thiyagarajan, P ;

Johnson, WL .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2000, 33 (01) :500-503

[6] Formation of quasicrystals and crystallization sequence in the Zr46.8Ti8.2CU7.5Ni10Be27.5 bulk glass [J].

Macht, MP ;

Mechler, S ;

Müller, M ;

Wanderka, N .

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, 2002, 386-3 :99-104

[7] Crystallization behavior and stability of ZrTiCuNiBe glasses [J].

Macht, MP ;

Wei, Q ;

Wanderka, N ;

Sieber, I ;

Deyneka, N .

METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2, 2000, 343-3 :173-178

[8]

Macht MP, 1996, MATER RES SOC SYMP P, V398, P375

[9] Time and temperature dependence of decomposition and crystallization in a multicomponent bulk metallic glass forming alloy [J].

Schneider, S ;

Geyer, U ;

Thiyagarajan, P ;

Johnson, WL .

SYNTHESIS AND PROPERTIES OF MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2 - ISMANAM-96, 1997, 235-2 :337-342

[10] Continuous refinement of the microstructure during crystallization of supercooled Zr41Ti14Cu12Ni10Be23 melts [J].

Schroers, J ;

Busch, R ;

Masuhr, A ;

Johnson, WL .

APPLIED PHYSICS LETTERS, 1999, 74 (19) :2806-2808

← 1 2 →