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| Super-Alloys
are high temperature alloys based on nickel in which a second phase of
Ni3Al precipitates
improve their high temperature resistance to plastic deformation, fracture,
and creep processes.
The photograph shows a crack propagating in a Ni-Al super-alloy and interacting with the Ni3Al intermetallic phase that makes deformation more difficult. The Ni3Al precipitates have dimensions on the order of 0.5 mm. |
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| From:
Newey and Weaver,
"Materials in Action" Butterworth (1990) |
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