Anomalous eutectic formation in the solidification of undercooled Co–Sn alloys

Liu, L.; Wei, Xiaoxiao; Huang, Q.S.; Li, J.F.; Cheng, Xiaoxing; Zhou, Yaohe

doi:10.1016/j.jcrysgro.2012.07.041

Cited by 25 publications

(11 citation statements)

References 26 publications

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“…In such manner, alternating A2-B2 phase configurations are formed. Similar phenomena have been observed in various research efforts dealing with regular and anomalous eutectic solidification [25][26][27][28][29][30][31]. Further recalescence causes temperature increase in the remaining liquid phase and eutectic growth commences.…”

Section: Alloy Csupporting

confidence: 83%

Microstructural verification of the theoretically predicted morphologies of the NiAl–Cr pseudo-binary alloy systems and NiAl–Cr eutectic structure modification by Mo addition

et al. 2019

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Based on the NiAl-Cr pseudo-binary phase diagram, ranging from hypo-to hyper-eutectic areas, alloys with various compositions were produced by arc melting. The microstructures were compared with the theoretical predictions of Tang et al. (Chem Chem Phys 18(29):19773-19786, 2016) and they were proved to be in agreement. The partial substitution of Cr by Mo in three different compositions revealed eutectic and hypo-eutectic microstructures with the eutectic micro-constituent modified from fibrous to lamellar. The importance of T0-A2 and T0-B2 temperatures [the maximum temperatures under which, partitionless solidification of A2 and B2 phases respectively happens (Laughlin and Hono in Physical metallurgy, Elsevier, Amsterdam, 2014)] and their relation to Te (eutectic temperature) proved to be the dominant factor that shifts the microstructures to off equilibrium morphologies in the case of NiAl-Cr alloys.

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Section: Alloy Csupporting

confidence: 83%

Microstructural verification of the theoretically predicted morphologies of the NiAl–Cr pseudo-binary alloy systems and NiAl–Cr eutectic structure modification by Mo addition

et al. 2019

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“…An issue that has been discussed intensively over the past few decades is the transition from lamellar or fibrous eutectics at low undercooling to anomalous eutectics at large undercooling [1][2][3][4][5][6][7][8]. Several ideals have been proposed to explain the anomalous eutectic formation.…”

Section: Introductionmentioning

confidence: 99%

Remelting-induced anomalous eutectic formation during solidification of deeply undercooled eutectic alloy melts

Wei

Lin

et al. 2015

Acta Materialia

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“…Rapid solidification of undercooled eutectic alloys has attracted considerable interest in past decades due to their unique competitive nucleation and growth mechanisms. In particular, many studies have been carried to understand non-equilibrium phenomena such as metastable solidification behavior and a morphological transition from regular lamellar eutectic to anomalous eutectic in a number of eutectic systems such as Ni-Sn [1][2][3], Ni-Si [4,5] Co-Sn [6,7], Ag-Cu [8,9], and Co-Si [10][11][12][13][14]. Solidification microstructures of those alloys have been shown to depend on experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Metastable solidification pathways of undercooled eutectic CoSi–CoSi2 alloys

et al. 2019

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Solidification and growth behavior of undercooled eutectic CoSi-CoSi 2 melts was observed using containerless levitation and in situ high-energy synchrotron X-ray diffraction techniques. Three metastable solidification pathways of eutectic CoSi-CoSi 2 were determined as a function of undercooling. Upon double recalescence at low undercoolings the primary and secondary phases are CoSi and CoSi 2 , while at high undercoolings the phase formation sequence is reversed. At intermediate undercoolings a single recalescence was observed and attributed to a crossover of the nucleation barriers for the two phases. Scanning electron microscopy combined with electron back-scattering diffraction measurements revealed changes of the morphological characteristics and orientation of CoSi and CoSi 2 phases for different solidification pathways.

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Anomalous eutectic formation in the solidification of undercooled Co–Sn alloys

Cited by 25 publications

References 26 publications

Microstructural verification of the theoretically predicted morphologies of the NiAl–Cr pseudo-binary alloy systems and NiAl–Cr eutectic structure modification by Mo addition

Microstructural verification of the theoretically predicted morphologies of the NiAl–Cr pseudo-binary alloy systems and NiAl–Cr eutectic structure modification by Mo addition

Remelting-induced anomalous eutectic formation during solidification of deeply undercooled eutectic alloy melts

Metastable solidification pathways of undercooled eutectic CoSi–CoSi2 alloys

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