Formation mechanism of recrystallisation internal friction peak and its application to determine the recrystallisation temperature of deformed pure Cu

Autor: Tianlu Chen, Meng Sun, Run Yang, Rui Liu, Weibin Jiang, Tao Zhang, Xuebang Wu, Xianping Wang, Changsong Liu, Qianfeng Fang
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Philosophical Magazine Letters, Vol 104, Iss 1 (2024)
Druh dokumentu: article
ISSN: 09500839
1362-3036
0950-0839
DOI: 10.1080/09500839.2024.2302628
Popis: The formation mechanism of a recrystallisation internal friction (IF) peak superimposed on a grain boundary (GB) IF peak for deformed copper was studied. The P1 peak, associated with the recrystallisation process, was observed at ∼ 599 K (2 K/min) during the first heating process. Subsequently, the P2 peak, located at ∼ 510 K (0.2 Hz), corresponded to GB relaxation during the cooling process. The P1 peak showed minor relaxation at higher frequencies owing to the influence of GB relaxation. To accurately determine the temperature of the P1 peak in this scenario, two methods were used: fitting the measured IF spectra and performing IF measurements at lower frequencies and/or with faster heating rates to minimise the impact of GB relaxation. This work investigated the formation mechanism of the recrystallisation peak and supplemented the method for determining the recrystallisation temperature through IF measurements when the GB peak occurs at a nearby temperature.
Databáze: Directory of Open Access Journals
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