Concise Dictionary of Materials Science Part 5 potx
Concise Dictionary of Materials Science Part 5 potx
... between the number of components, C, the number of phases, P, and the number of degrees of freedom, F, in some equilibrium thermodynamic system: F = C – P + 2 in the case of varying temperature ... independently. In the case of the arbitrarily chosen temperature, the compositions of the phases are fixed, and in the case of the arbitrarily chosen composition of one of th...
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Concise Dictionary of Materials Science Part 4 potx
... directions 〈110〉. The radius of tetrahedral void equals 0.225R and that of octahedral void is 0.415R, where R is the atomic radius. In a densely packed structure, the atoms of each most densely packed ... hollows of the second layer and above the C hollows of the first layer. The atom centers of the fourth layer are arranged in the hollows of the third layer and above the...
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Concise Dictionary of Materials Science Part 1 pdf
... consisting of two sublattices: an FCC sublattice of O 2– ions and a sublattice of Al 3+ ions occupying two thirds of the octahedral sites in the first one. α-Fe Allotropic form of iron having ... metallurgy of Ti alloys, an alloying element increasing the thermodynamic stability of α-phase and thereby raising the β/(α + β) transus in the corresponding phase diagram. In physic...
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Concise Dictionary of Materials Science Part 2 pdf
... and mechanical properties in various directions. Anisotropy of single crystals is a result of crystalline aniso- tropy, whereas that of a polycrystal is dependent on crystallographic texture ... forces for growth of variously oriented grains and different mobility of their boundaries (see compromise texture). Grain growth commonly (but not always) results in weakening of the p...
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Concise Dictionary of Materials Science Part 3 ppt
... result of the preferential arrange - ment of precipitates at subboundaries (see heterogeneous nucleation), which inhibits their migration (see particle drag). Because of this, an increase of the ... of the elastic strain energy associated with lattice defects, which might contribute to the for - mation of recrystallization nuclei. Continuous recrystallization is observed in m...
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Concise Dictionary of Materials Science Part 6 ppt
... Manifestation of the difference in diffusion rates of the atoms of different components in the case of vacancy mechanism, i.e., in substitutional solid solutions. An annealing of a sample made of two ... connecting two parallel segments of the same dislocation lying on both sides of the Peierls barrier. Kinks can easily glide along with the dislocation. kink band Part...
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Concise Dictionary of Materials Science Part 9 ppt
... were present in such a particle, the particle’s free energy would be increased. In the particle, the energy of the magnetic poles at its surface is the lowest in the case of the largest pole spacing. ... manufacturing dense articles from porous particulate compacts (porosity in green compacts usually is between 25 and 50 vol%) resulting from spontaneous bonding of adjacent particl...
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