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Effects of yttrium on the oxidation behaviour of Iron‐Chromium‐Aluminium Alloys
Author(s) -
Klöwer J.,
Li J.G.
Publication year - 1996
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19960471003
Subject(s) - chromium , aluminium , yttrium , metallurgy , materials science , oxide
The effects of yttrium additions on the oxidation behaviour of Fe‐20Cr‐5Al(wt%) alloys have been investigated in oxidation tests and cyclic heating‐element tests at temperatures ranging from 1100 to 1400°C in air. Experimental results showed that the oxidation resistance of the alloys depends sensitively on the yttrium concentration. It was found that yttrium additions of about 0.045 wt% are sufficient to prevent the oxide scale from spalling. When the yttrium content is increased to more than 0.08 wt%, on the other hand, substantial internal oxidation of the alloys takes place, resulting in rapid wastage of the materials.