The study of eutectoid decomposition kinetics of Cu50Zr50 alloy / Filippov V. V.,Yagodin D. A.,Ryltseva A. A.,Estemirova S. Kh.,Shunyaev K. Yu. // JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY. - 2017. - V. 127, l. 1. - P. 773-778.

ISSN/EISSN:

1388-6150 / 1588-2926

Type:

Article

Abstract:

The process of the eutectoid decomposition CuZr -> Cu10Zr7 + CuZr2 in a Cu50Zr50 alloy under isothermal and non-isothermal conditions was investigated by using differential scanning calorimetry, electrical resistivity, X-ray diffraction, optical microscopy and dilatometer techniques. The continuous cooling transformation and time-temperature transformation diagrams for the decomposition of CuZr were determined over a wide temperature range. It was observed that the decomposition process is extremely slow in comparison with many other copper-based systems. The kinetics of the eutectoid decomposition under isothermal conditions was discussed within the frameworks of the Johnson-Mehl-Avrami theory. Kinetics parameters of eutectoid decomposition, namely the activation energy E (a) = 395 +/- 24 kJ mol(-1) and the power n = 3.3 +/- 0.1 in Avrami exponent, were determined.

Author keywords:

Kinetics; Eutectoid decomposition; Copper-zirconium alloys; DSC; Electrical resistivity; X-ray diffraction, optical microscopy and thermal expansion measurements; CCT and TTT diagrams; Johnson-Mehl-Av

DOI:

10.1007/s10973-016-5530-7

Web of Science ID:

ISI:000392337000085

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JAN
Publisher	SPRINGER
Address	VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Language	English
EISSN	1588-2926
Research-Areas	Thermodynamics; Chemistry
Web-of-Science-Categories	Thermodynamics; Chemistry, Analytical; Chemistry, Physical
Author-Email	aleaiil@mail.ru
Funding-Acknowledgement	Russian Science Foundation {[}14-13-00676]; Program of Competitiveness Development of Ural State University {[}5-100-2020]
Funding-Text	This research was supported by the Russian Science Foundation (Grant No 14-13-00676). Institute of metallurgy UB RAS thanks the Center of Shared Scientific Equipment ``Ural-M'' and the Program of Competitiveness Development of Ural State University 5-100-2020 for access to scientific equipment.
Number-of-Cited-References	13
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	5
Journal-ISO	J. Therm. Anal. Calorim.
Doc-Delivery-Number	EI2RZ