Synergic Role of Self-Interstitials and Vacancies in Indium Melting
AbstractPrecursor effects of indium melting have been investigated by means of Mechanical Spectroscopy (MS) and High Temperature X-ray Diffraction (HT-XRD). MS tests evidenced a sharp drop of dynamic modulus in the temperature range between 418 K and 429 K (melting point). At 429 K, HT-XRD showed partial grain re-orientation, peak profile broadening, in particular in the lower part, and peak shift towards lower angles. Experimental results are consistent with density increase of self-interstitials and vacancies in the crystal lattice before melting. Self-interstitials and vacancies play a synergic role in the solid–liquid (S-L) transformation. The increase of self-interstitials over a temperature range of about 10 K before melting has the effect of weakening interatomic bonds (modulus drop) that favors the successive vacancy formation. Finally, the huge increase of vacancy concentration above 428 K leads to the collapse of crystal lattice (melting). View Full-Text
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Montanari, R.; Varone, A. Synergic Role of Self-Interstitials and Vacancies in Indium Melting. Metals 2015, 5, 1061-1072.
Montanari R, Varone A. Synergic Role of Self-Interstitials and Vacancies in Indium Melting. Metals. 2015; 5(2):1061-1072.Chicago/Turabian Style
Montanari, Roberto; Varone, Alessandra. 2015. "Synergic Role of Self-Interstitials and Vacancies in Indium Melting." Metals 5, no. 2: 1061-1072.