Effect of liquid temperature on thermal stability and crystallization behavior of Ni-based amorphous alloys

Lee, J.K.; Kim, W.T.; Kim, D.H.

doi:10.1016/j.msea.2003.10.103

Cited by 20 publications

(11 citation statements)

References 11 publications

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“…Ni, Ti, Zr and Si fulfill known empirical rules for the glass formers since both Ni-Ti and Ni-Zr alloys form deep eutectics, the differences between atomic radii of Ti(Zr) and Ni exceeds 18% and enthalpy of mixing of these elements with Si is large and negative [2]. The systematic studies under the optimization of the compositions show that a few percent additions of Sn may improve GFA [3], while Nb, Co Cr, Mo and Cu additions may increase T range of supercooled liquid as well as the strength and corrosion resistance of the alloys [4][5][6]. The Al addition promotes lower temperature of crystallization [7].…”

Section: Introductionmentioning

confidence: 90%

Glass forming ability and mechanical properties of the NiZrTiSi amorphous alloys modified with Al, Cu and Nb additions

Czeppe

Ochin²,

Sypień

2007

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 90%

Glass forming ability and mechanical properties of the NiZrTiSi amorphous alloys modified with Al, Cu and Nb additions

Czeppe

Ochin²,

Sypień

2007

Journal of Alloys and Compounds

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“…Component optimization is efficient due to complex atomic interaction [20][21][22]. Attemperation is a simple and low-cost method that has been developed in many metallic alloy systems such as La-Ni-Al [8], Ti-Zr-Be-Al [23], Zr-Ti-Cu-Ni-Be [24], and Ni-Zr-Ti-Si [25]. However, hitherto, very limited studies have been performed on the thermal stability of BMGCs, so it is necessary to explore the optimal technological parameters to rejuvenate BMGCs; on the other hand, the aging mechanism also needs to be researched in depth.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thermal Cycling Treatments on the Thermal Stability and Mechanical Properties of a Ti-Based Bulk Metallic Glass Composite

Wang

et al. 2016

Metals

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Abstract:The effect of thermal cycling treatments on the thermal stability and mechanical properties of a Ti 48 Zr 20 Nb 12 Cu 5 Be 15 bulk metallic glass composite (BMGC) has been investigated. Results show that moderate thermal cycles in a temperature range of −196 • C (cryogenic temperature, CT) to 25 • C (room temperature, RT) or annealing time at CT has not induced obvious changes of thermal stability and then it decreases slightly over critical thermal parameters. In addition, the dendritic second phases with a bcc structure are homogeneously embedded in the amorphous matrix; no visible changes are detected, which shows structural stability. Excellent mechanical properties as high as 1599 MPa yield strength and 34% plastic strain are obtained, and the yield strength and elastic modulus also increase gradually. The effect on the stability is analyzed quantitatively by crystallization kinetics and plastic-flow models, and indicates that the reduction of structural relaxation enthalpy, which is related to the degradation of spatial heterogeneity, reduces thermal stability but does not imperatively deteriorate the plasticity.

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“…The thermal, mechanical and physical properties of rapidly solidified metallic alloys have a strong dependence on its cooling rate, which in turn, depend on the melt-spinning parameters [5,6,8,9]. Therefore, thorough control of the spinning parameters for the rapid solidification process is important both from scientific and engineering points of view.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, thorough control of the spinning parameters for the rapid solidification process is important both from scientific and engineering points of view. The influence of melt-spinning parameters on the structure and physical properties of rapidly quenched alloys has been discussed in various research and review papers [8][9][10][11][12][13]. Due to the improved thermal contact at the wheel-ribbon interface, the cooling rate increases with ejection pressures [11].…”

Section: Introductionmentioning

confidence: 99%

Importance of chamber gas pressure on processing of Al-based metallic glasses during melt spinning

Yang

Wang

Yuan

et al. 2011

Philosophical Magazine Letters

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2011)Importance of chamber gas pressure on processing of Al-based metallic glasses during melt spinning, Philosophical Magazine Letters, 91:10, 656-663,The effect of chamber gas pressure on the amorphicity of Al 85 Ni 5 Y 10 alloy was studied for the melt-spinning process. The amorphicity of as-quenched ribbons was characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The chamber atmosphere pressure is crucial to the cooling rate of melt spinning. At high vacuum, at pressure less than 0.001 atm, fully crystalline fragments are obtained. Monolithic amorphous ribbons were only obtained at a gas pressure of 0.1 atm, 0.2 atm or higher. The extended contact length between ribbons and the copper wheel contributes to the high cooling rate of melt spinning in Al-based glass forming alloys; that is supported by images recorded by a high-speed camera. Higher chamber pressure increases contact length between ribbons and the wheel, which is qualitatively elucidated by Bernoulli's equation.

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Effect of liquid temperature on thermal stability and crystallization behavior of Ni-based amorphous alloys

Cited by 20 publications

References 11 publications

Glass forming ability and mechanical properties of the NiZrTiSi amorphous alloys modified with Al, Cu and Nb additions

Glass forming ability and mechanical properties of the NiZrTiSi amorphous alloys modified with Al, Cu and Nb additions

The Effect of Thermal Cycling Treatments on the Thermal Stability and Mechanical Properties of a Ti-Based Bulk Metallic Glass Composite

Importance of chamber gas pressure on processing of Al-based metallic glasses during melt spinning

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