Crystallization kinetics in Cu35Ag15Zr45Al15 metallic glass

Ou, Xinwen; Zhang, G.Q.; Xu, Xianbo; Wang, L.N.; Liu, J.F.; Jiang, J.Z.

doi:10.1016/j.jallcom.2006.08.340

Cited by 28 publications

(24 citation statements)

References 17 publications

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“…It is clearly seen that T g , T x and the exothermic peak temperatures, T p1 , T p2 , T p3 and T p4 shift to higher temperatures with increasing heating rate. The crystallization of the sample is rate dependent, caused by the fact that nucleation is a thermally activated process, whereas the rate dependence of the kinetic glass transition is due to the relaxation processes in the glass transition region [21,22]. The Kissinger's method was used to calculate the activation energy of the glass transition and crystallization reaction E g , E x and E p [23] ln…”

Section: Resultsmentioning

confidence: 99%

Mg–Ni–Gd–Ag bulk metallic glass with improved glass-forming ability and mechanical properties

Peng

et al. 2011

Intermetallics

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Section: Resultsmentioning

confidence: 99%

Mg–Ni–Gd–Ag bulk metallic glass with improved glass-forming ability and mechanical properties

Peng

et al. 2011

Intermetallics

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“…Moreover, an interesting phenomenon in the Cu-Ag system is the presence of a miscibility gap revealed by Frederiksson et al in the liquid and solid solution [20]. Kündig In this alloy system, there is an intermetallic compound: m-phase of body-centered tetragonal structure denoted as Cu 70 Zr 16 Ag 14 (or AgCu 4 Zr) by Zhou et al [23]. The crystal lattice of m-phase (together with the atomic positions) is not well-known in literature.…”

Section: Introductionmentioning

confidence: 99%

“…The ternary Cu-Zr-Ag [6][7][8][9][10][11] and Cu-Zr-Al [12][13][14][15][16] and quaternary Cu-Zr-Ag-Al [17][18][19][20][21] systems have been recently studied regarding the bulk glass forming ability (BGFA); however, only a few studies have been focused on crystallization products that may occur during solidification in the Cu-Zr-Ag alloy system. There has been no standard definition of glass forming ability (GFA) up to date; generally, this parameter is derived from the properties of atomic components or those of the produced amorphous sample.…”

Section: Introductionmentioning

confidence: 99%

Solidification processes in Cu–Zr–Ag amorphisable alloy system

Janovszky

Sycheva

Tomolya

et al. 2014

Journal of Alloys and Compounds

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Abstract:The Cu-Zr-Ag system is one of Cu-Zr based bulk metallic glasses (BMG) that has been in the center of great interest for a long time. This work summarizes results on solidification in the Cu-Zr-Ag ternary alloys and relationship between the cooling rate and their microstructure. The alloys in a wide range of compositions were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) techniques. The surface of stable liquidus miscibility gap has been presented by isothermal sections in this system. The central part of liquidus projection of the ternary Cu-Zr-Ag system is determined based on the harmonization of experimental results and the calculated phase diagrams. Due to the liquid separation, amorphous/crystalline composites could be obtained with a silver content up to 50 at%. The primary solidified phases were identified in different samples cooled with a controlled cooling rate (5 K/min), in the arc melting furnace (master alloys) and in a wedge shape mould. It has been shown that the m-phase (or AgCu 4 Zr) has the lowest and the (CuAg) 10 Zr 7 the highest driving force for nucleation in this system. It has been shown that the glass forming ability depends not only on the properties of atomic constituent but on the phases formed during the solidification of undercooled liquid.

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“…The crystallization of samples is rate dependent caused by the fact that nucleation is a thermally activated process, whereas the rate dependence of the kinetic glass transition is due to the relaxation processes in the glass transition region [27]. This phenomenon has been also reported for Zr-based BMGs [28].…”

Section: Resultsmentioning

confidence: 58%