The crystallization study of glassy thin film Ti-base alloy

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Mohri Maryam

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Journal: METALLURGICAL ENGINEERING Year:2019 | Volume:22 | Issue:1 (73) Page(s): 12-20

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Title

The crystallization study of glassy thin film Ti-base alloy

Author(s)

Mohri Maryam | Issue Writer Certificate

Keywords

thin filmQ2

crystallizationQ1

metallic glassQ1

Ti-Cu-Zr-SnQ1

Abstract

Amorphous Ti45Cu35Zr15Sn5(at. %) thin-films metallic glass was prepared by non-reactive magnetron sputteringin pure argon at room temperature. The microstructural evaluation shows that the as-deposited thin films have a glassy structure. In this paper, the kinetics of isochronal and isothermal differential scanning calorimetry of Ti45Cu35Zr15Sn5amorphousalloy was analyzed to understand the mechanism of crystallization. The crystallization process constituted of two exothermic transformations occurring from 723 to 863 K. The activation energy of the crystallizationwas obtained by the Kissinger-kahira-Sunose method. The results show that the activation energy ofthe Ti45Cu35Zr15Sn5film for the first and the second crystallization stepswere370 and 300 kJ/mol, respectively. In the case of isothermal crystallization, the crystallization kinetics was modeled by theJohnson– Mehl– Avrami-kohnogorov (JMAK) equation. The Avrami exponents were calculated to be about 2. The localAvrami exponents indicating that the crystallization mechanism of Ti45Cu35Zr15Sn5 freestandingthin films is three-dimensional growth with either a decreasing nucleation rate.

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APA: Copy

Mohri, Maryam. (2019). The crystallization study of glassy thin film Ti-base alloy. METALLURGICAL ENGINEERING, 22(1 (73) ), 12-20. SID. https://sid.ir/paper/409408/en

Vancouver: Copy

Mohri Maryam. The crystallization study of glassy thin film Ti-base alloy. METALLURGICAL ENGINEERING[Internet]. 2019;22(1 (73) ):12-20. Available from: https://sid.ir/paper/409408/en

IEEE: Copy

Maryam Mohri, “The crystallization study of glassy thin film Ti-base alloy,” METALLURGICAL ENGINEERING, vol. 22, no. 1 (73) , pp. 12–20, 2019, [Online]. Available: https://sid.ir/paper/409408/en

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