Flux-induced structural modification and phase transformations in a Pd40Ni40Si4P16 bulk-glassy alloy

Chen, N.; Gu, L.; Xie, Guoqiang; Louzguine-Luzgin, Dmitri V.; Yavari, A.R.; Vaughan, Gavin; Imhoff, Seth D.; Perepezko, J. H.; Abe, Taichi; Inoue, Akihisa

doi:10.1016/j.actamat.2010.07.003

Cited by 30 publications

(17 citation statements)

References 32 publications

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“…As it has been shown, PdeNieSieP alloys crystallize forming a ternary eutectic structure consisting of FCC Ni(Pd) solid solution, Pd-rich orthorhombic phase and Ni-rich orthorhombic phase [27,28]. Formation of the fourth Ni 3 Si phase is caused by second reaction above 700 K visible in the DSC curve shown in Fig.…”

Section: Discussionmentioning

confidence: 92%

“…It was reported that this alloy exhibits a very large supercooled liquid region of about 115 K and has an excellent GFA [28]. Therefore, it is possible to investigate the thickness dependence of the properties of the glassy alloy and to clarify possible mechanism for the difference in hardness, enthalpy and density induced by the structural sensitivity to the cooling rate.…”

Section: Introductionmentioning

confidence: 98%

See 1 more Smart Citation

Pd40Ni40Si5P15 bulk metallic glass properties variation as a function of sample thickness

Louzguine-Luzgin¹,

Chen²,

Zadorozhnyy³

et al. 2013

Intermetallics

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Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 98%

Pd40Ni40Si5P15 bulk metallic glass properties variation as a function of sample thickness

Louzguine-Luzgin¹,

Chen²,

Zadorozhnyy³

et al. 2013

Intermetallics

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“…In a study of the undercooling behavior of nanosize Ga drops, minor additions of Si were observed to promote the crystallization of metastable phases and it was suggested that structural motifs other than icosahedral may be present in undercooled liquids that can act to catalyze metastable structures [62,63]. Similarly, in glass forming Pd alloys structural investigation of flux treated samples revealed a densification of the undercooled liquid that was manifested in an increased resistance to crystallization compared to samples without flux treatment [64]. Other structural studies of a Zr-base amorphous alloy revealed a change in short range order above the glass transition [65].…”

Section: Environment Effects On Nucleation Undercoolingmentioning

confidence: 95%

Melt undercooling and nucleation kinetics

Perepezko

Wilde

2016

Current Opinion in Solid State and Materials Science

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a b s t r a c tWhile melt undercooling is often observed during solidification the control of undercooling and nucleation is difficult due to the numerous possible heterogeneous sites present in even high purity melts. The identification of active nucleation sites has been a continuing challenge that requires developing well planned experimentation. In samples with well-defined and controlled undercooling, the identification can be established for a number of the active sites and mechanisms that can act to catalyze nucleation. The sites and mechanisms that have been identified involve primary phases developed during cooling of alloy melts, liquid-added particle interfaces being modified (e.g. by adsorption or reaction) creating a particle type independent nucleation potency, dissolved impurities precipitating out of the melt at high undercooling or acting to alter local atomic arrangements in the melt to catalyze nucleation and nucleation sites resulting from residual solid preserved in cavities in inclusions or surface coatings. Recent advances in clarifying the structure of liquids reveal local atomic arrangements such as short range order, medium range order and cluster structures, but the role of these local heterogeneities on the undercooling and crystallization behavior is incompletely understood at present.

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“…Extensive studies on the structure, glass-forming ability, crystallization behavior and properties of BMGs have been conducted [1][2][3][4][5][6][7][8][9]. It is also notable that many BMGs exhibit large supercooled liquid region ΔT x (=T x −T g , T x and T g are the onset temperature of crystallization and glass transition temperature, respectively.)…”

Section: Introductionmentioning

confidence: 99%

“…In the last two decades, a large number of bulk metallic glasses (BMGs) have been developed in various alloy systems, which are attractive new materials because of their outstanding mechanical, physical and chemical properties [1][2][3][4][5][6][7][8][9]. Extensive studies on the structure, glass-forming ability, crystallization behavior and properties of BMGs have been conducted [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Correlation between supercooled liquid region and crystallization behavior with alloy composition of La-Al-Cu metallic glasses

Zhang

Pang

et al. 2011

Sci. China Phys. Mech. Astron.

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Bulk metallic glasses (BMGs) with large supercooled liquid region are promising materials for superplastic forming. In this paper, we demonstrate a microstructure-based strategy to pinpoint the composition with the largest supercooled liquid region in La 86−x Al 14 Cu x (x=16 at%-20 at%) metallic glass system. By monitoring the changes in crystallization behavior of the glassy alloys with composition to search for the alloys exhibiting eutectic crystallization, the glassy alloys with the largest supercooled liquid region in the given alloy system can be found. The metallic glasses with Cu contents of 16 at%-19 at% exhibited two crystallization peaks, and the primary crystallization product was identified to be α-La by means of DSC, XRD and TEM. The increase in Cu content resulted in the decay of the primary crystallization peak and the increase in onset temperature of crystallization, leading to the enlargement of supercooled liquid region. By further suppressing the α-La primary crystallization with increasing Cu content up to 20 at%, the eutectic crystallization of α-La and LaCu 13 through one crystallization reaction occurred upon heating, where the largest supercooled liquid region of 65 K for La 66 Al 14 Cu 20 glassy alloy was located. This study indicats that, in a given glassy alloy system, a larger supercooled liquid region can be achieved by optimizing the alloy compositions to suppress the primary crystallization. bulk metallic glass, supercooled liquid region, crystallization PACS: 81.05.Kf, 81.10.Aj, 64.70.Pf

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Flux-induced structural modification and phase transformations in a Pd40Ni40Si4P16 bulk-glassy alloy

Cited by 30 publications

References 32 publications

Pd40Ni40Si5P15 bulk metallic glass properties variation as a function of sample thickness

Pd40Ni40Si5P15 bulk metallic glass properties variation as a function of sample thickness

Melt undercooling and nucleation kinetics

Correlation between supercooled liquid region and crystallization behavior with alloy composition of La-Al-Cu metallic glasses

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