The eutectic solidification process

Elliott, R.

doi:10.1016/b978-0-408-10714-3.50007-1

Cited by 97 publications

(57 citation statements)

References 42 publications

(7 reference statements)

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“…This is an equally attractive site for atomic additions and growth from these corners preserves the original re-entrant system and permits continuous, unlimited propagation in the direction of the original 141° re-entrant grooves. Thus the TPRE system allows growth to proceed preferentially in any or all of the six <211> directions depending on the heat flow direction [82].…”

Section: Modification Mechanismmentioning

confidence: 99%

“…(a) (b) (c) Figure 2.36: (a) A crystal of Si with one twin plane bound by {111} faces, (b) a crystal containing two twin planes, (c) re-entrant sizes I and II on the crystal [24,82] Studies by transmission electron microscopy have revealed that modified silicon fibers contain orders of magnitude more twins than do the unmodified silicon plates ( Figure 2.37). The surface of the fibers is micro faceted and rough as a consequence of the intersection of great number of twin planes with it.…”

Section: Modification Mechanismmentioning

confidence: 99%

“…removing the compound AlP and poisoning the TPRE step of growth, thereby lowering nucleation as well as growth temperature of the silicon crystals. Of these elements, Sr attracts special interest and it has become quite popular as a modifying agent [24,36,[82][83][84][85][86][87]. …”

Section: Modification Mechanismmentioning

confidence: 99%

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Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

Nafisi¹

2006

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Semi-solid metal (SSM) processing is gaming momentum as an effective alternative to the classical manufacturing processes of casting and forging. This category takes advantages of both liquid and solid forming processes. In the absence of shear force, semi-solid slug is similar to a solid, self standing, while with the application of shear force, the viscosity is reduced appreciably and the material flows like a liquid; Thixotropic-"

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Section: Modification Mechanismmentioning

confidence: 99%

Section: Modification Mechanismmentioning

confidence: 99%

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Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

Nafisi¹

2006

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“…Within these eutectic grains all phase regions of the same kind exhibit a single and constant crystallography, and there is a unique and preferred crystallographic interface plane between the two constituent phases [3][4][5][6][7][8]. The lamellar grain just described is, in fact, two single crystallites of the two constituent phases [7 ,9-11].…”

Section: Lamellar Eutecticsmentioning

confidence: 99%

“…A relaxation of the regularity and perfection of the eutectic lamellar structure is possible with a small addition of a third element [ 19] During solidification, the third element in the eutectic Pb-Sn alloy, acting analogously to an impurity in a single component system, will [3,11,12,14,20,22].…”

Section: Effects Of Compositionmentioning

confidence: 99%

A microstructural study of creep and thermal fatigue deformation in 60Sn-40Pb solder joints

Tribula¹

1990

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Solidification Behavior of the Hydrazine Nitrate‐Nitroguanidine Eutectic System

Chen

et al. 2013

Propellants Explo Pyrotec

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In an attempt to better understand the properties of energetic eutectic materials, the eutectic mixture of hydrazine nitrate (HN) and nitroguanidine (NQ) was prepared by a melt crystallization method. The melting temperature and fusion enthalpy of the pure components and the eutectic were determined using differential scanning calorimetry. The structure of the HN‐NQ title compound was characterized by infrared spectroscopy (IR), X‐ray diffraction (XRD), and scanning electron microscopy. Thermodynamic functions such as excess Gibb’s energy, excess enthalpy, and excess entropy of the title mixture were calculated using activity coefficient data. The intermolecular interactions of different molar ratios of the HN‐NQ eutectic were determined by density functional theory (DFT) methods. The results of the excess thermodynamic functions and computer simulations indicate that the eutectic is not a mechanical mixture. IR spectroscopic and XRD studies confirm that there is some interaction between the components during the formation of the eutectic mixture. Moreover, the microstructure of the eutectic mixture at a molar ratio of 3 : 2 was more uniform than others, which was proved by DFT calculations. The Jackson’s roughness parameter was found to be greater than 2, suggesting a faceted, irregular morphology. These results could pave a way for further investigation of the energetic eutectic system aiming to supersede TNT.

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The eutectic solidification process

Cited by 97 publications

References 42 publications

Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

Effects of grain refining and modification on the microstructural evolution of semi-solid 356 alloy /

A microstructural study of creep and thermal fatigue deformation in 60Sn-40Pb solder joints

Solidification Behavior of the Hydrazine Nitrate‐Nitroguanidine Eutectic System

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