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03-22-2019, 03:39 AM #2
The main advantages of Nickel superalloys at high temperatures are:
- good mechanical characteristics for short and long-term applications;
- good resistance to hot oxidation (which can be improved through the use of suitable surface coatings).
Over the years, several nickel superalloys have been developed both from a compositional and a microstructural point of view.
- On a compositional level, the most recent alloys show fewer chromium and cobalt and more rhenium and ruthenium.
- As far as the microstructural aspect is concerned, on the other hand, nickel superalloys have an austenitic matrix (FCC) with intermetallic precipitates and a high quantity of carbides and borides.
Please explain to me how to...
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