TURBINE ENGINE COMPONENT AND METHOD OF IMPROVING STRENGTH, CREEP AND FAILURE RESISTANCE OF SINGLE CRYSTAL COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide a method of improving the strength and failure resistance of single crystal gas turbine components. SOLUTION: The method of improving the strength and failure resistance of single crystal components broadly comprises the steps of forming a component having a single crystal microstructure with a plurality ofγ' platens and forming a limited amount of oriented platens in a particular direction prior to the component being placed into service to delay coalescence of the platens relative to the applied load. The platens in a limited amount may be pre-oriented in the direction parallel to the tensile loading expected in service or pre-oriented to be perpendicular to expected compressive loading, thus rafting caused by loading in service is delayed, so as to improve material characteristics such as creep resistance. COPYRIGHT: (C)2007,JPO&INPIT