Effect of preliminary deformation on heat of melting of superplastic eutectic alloy Bi-43 wt % Sn

Autor: V. F. Korshak, M. V. Tkachenko
Rok vydání: 2013
Předmět:
Zdroj: The Physics of Metals and Metallography. 114:962-967
ISSN: 1555-6190
0031-918X
Popis: Studies have been performed on the effect of external compressive stress applied to samples of superplastic eutectic Bi-43 wt % Sn alloy during heating to a near-eutectic temperature on the specific heat of melting of the alloy. The alloy was prepared from chemically pure components by casting onto a massive copper substrate. After compression by ∼65% using a hydraulic press, the ingots were aged in air for approximately 7 months. The experiments were carried out using the method of differential thermal analysis. The samples were loaded using a specially designed device. A regular decrease in the specific heat of melting by ∼37% has been revealed while increasing the external pressure from 0 to 4.4 MPa. The experimental results are discussed using the available literature data on the heat of melting of the alloy and on the structure of the eutectic.
Databáze: OpenAIRE
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