Influence of the structure of the AlSi20 foundry alloy on the microstructure and viscosity of the Al-6\% Si model silumin in solid and liquid states / Nikitin K. V.,Finkel'shtein A. B.,Chikova O. A.,Timoshkin I. Yu. // RUSSIAN JOURNAL OF NON-FERROUS METALS. - 2013. - V. 54, l. 4. - P. 314-319.

ISSN/EISSN:

1067-8212 / нет данных

Type:

Article

Abstract:

The influence of the structure of starting charge alloys Al-20 wt \% Si on their structure after single remelting and crystallization with an identical cooling rate of 20 K/s is investigated. It is established that the structural transformation from the starting charge alloys stably retains, being translated in the ``solid-liquid-solid{''} system. The viscosimetry investigation of the melts obtained from the coarse-crystalline and the fine-crystalline charge alloys in the heating mode to 1350A degrees C and the subsequent cooling confirmed the conclusion that these melts are translators of structural information. It is established that the branching temperature (hysteresis) of viscosity polytherms (t (h)) in the heating and cooling modes for the melt made from the coarse-crystalline charge alloy is 1100A degrees C, while that for the fine-crystalline charge alloy is 1000A degrees C. It is noted that, in the second case, the viscosity in the cooling mode below t (h) is elevated, while the polythermal branch ascends more steeply. These results indicate the favorability of using special methods of processing the charge metals with the goal of laying positive structural information into them. The use of this approach is most reasonable when obtaining aluminum-based foundry alloys.

Author keywords:

starting charge alloy Al-20 wt \% Si; microstructure; primary silicon crystals; melt; viscosity; structural information; heterogeneity; polydispersity; monodispersity; foundry alloys

DOI:

10.3103/S1067821213040123

Web of Science ID:

ISI:000324106000007

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL
Publisher	ALLERTON PRESS INC
Address	18 WEST 27TH ST, NEW YORK, NY 10001 USA
Language	English
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
Author-Email	kvn-6411@mail.ru avinkel@mail.ru chik63@mail.ru
Funding-Acknowledgement	Thematic Plan of the Samara State Technical University {[}536/12]
Funding-Text	This study was performed as part of the Thematic Plan of the Samara State Technical University according to the order of the Ministry of Education and Science of the Russian Federation on the theme ``Investigation into the Influence of High-Energy Effects on the Formation of the Ultradispersed Structure of Aluminum Alloys in the ``Solid-Liquid-Solid{''} System, contract no. 536/12.
Number-of-Cited-References	25
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	13
Journal-ISO	Russ. J. Non-Ferrous Metals
Doc-Delivery-Number	214BS