Manufacturing Industry
Nucleated casting for land-based gas turbines: Clean Metal Nucleated Casting is a new method for casting superalloys in the semi-solid state, producing ingots with fine grain structure and minimal inclusions.
Advanced Materials & Processes, July, 2002 by Carter, William T., Jr.
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Robin M. Forbes Jones * The technical trend in the design of land-based gas turbines for electrical power production is toward higher firing temperatures to raise thermodynamic efficiency. Simultaneously, larger turbines are being designed to achieve higher power output. The concurrent technical trend in metals is toward increasingly complex alloys for better performance at higher temperatures.
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However, as the complexity of the alloys grows, developing the required homogeneous metallic structure becomes more challenging; these difficulties are amplified as part sizes increase. ...
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