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Plasticity and grain boundary structure of δ1k and δ1p intermetallic phases in the FeZn system

✍ Scribed by M.H. Hong; H. Saka

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
553 KB
Volume
45
Category
Article
ISSN
1359-6454

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✦ Synopsis

Two polycrystalline specimens of single phase with composition of 87.6 at.% Zn(&) and 90.6 at.% Zn(&, phase) in the Fe-Zn system have been prepared and deformed in compression between 200°C and 650°C. Below 350°C the 8,k phase is brittle, but above 400°C it is ductile. By contrast, the 61, phase never showed plasticity at any deformation temperature and strain rate. The microstructures of 611, and 61, phases were studied by optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) technique and correlated with the difference in plasticity. The difference in grain boundary structure between &r and 61, phases was found to be the primary reason for the observed difference in plasticity. c, 1997 Acta Metullurgica Inc.

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