Equilibrium concentration of interstitials in aluminum just below the melting temperature

✍ Scribed by C.A. Gordon; A.V. Granato

• Book ID: 103839094
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 79 KB
• Volume: 370
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2003.08.077

✦ Synopsis

A non-contact EMAT technique of ultrasonic generation and detection was used to make high temperature measurements of the C 44 deviation from perfect crystal behavior just below the melting temperature and a much smaller effect for C , which is to be expected for interstitials in FCC crystals. The results are analyzed to give a detected interstitial concentration of 1.7 ± 0.6 × 10 -4 just below the melting temperature of 933 K. This corresponds to a reasonable range for the interstitial formation enthalpy and entropy, and supports a major prediction of the interstitialcy theory of condensed matter states.