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Method for engineering a single crystal cast gas turbine engine metallic seal and apparatus comprising a corresponding seal
Method for engineering a single crystal cast gas turbine engine metallic seal and apparatus comprising a corresponding seal
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机译:用于工程化单晶铸造燃气涡轮发动机金属密封件的方法和包括相应密封件的设备
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摘要
A method is provided for engineering a single crystal cast gas turbine engine first component for cooperating with a second component. An at least local first operational stress on the first component is determined. The first operational stress has a first direction. A crystal orientation within the component or a physical configuration of the component is selected so that the first operational stress produces a desired engagement of the first component with the second component associated with either a negative Poisson's effect or high Poisson's effect in a second direction. Single crystal or highly textured iron- and nickel-base alloys enable one to use such effect in high temperature and/or corrosive environments.
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