Ejenstam J., Szakalos P.
KTH Royal Institute of Technology, Stockholm, Sweden
Corrosion studies of Fe10CrAl-RE alloys have shown promising results, however the microstructural stability at embrittling temperatures have to be proven. 10Cr and Fe21Cr5Al alloys were evaluated at 450-600°C. Studies have shown that all 10Cr-alloys are immune to α-α’ phase separation up to 5,000h at 450°C and 475°C and up to 10,000h at 500°C. At these temperatures, the Fe21Cr5Al alloy was clearly embrittled. At 550°C and 600°C, phase separation was not observed for any alloy.
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