The study was carried out to determine the effect of long-term ageing (1,000 and 10,000 hours) at 700°C and 750°C on the microstructure of the HR6W alloy. The study indicates that the long-term effect of high temperature causes significant changes in the microstructure of the examined alloy: • After ageing for 1,000 hours at 700°C, in addition to primary MX and M23C6 precipitations, an increase in...
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