METHOD FOR RESTORING DIMENSION OF ARTICLE AND PREFORM FOR PERFORMING SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for restoring an article such as airfoil. SOLUTION: The method for restoring dimension of the article comprises steps of: providing an article 20 having a section requiring dimensional restoration; providing a preform 22 having a first layer 24 and a second layer 26 made from different materials; and joining the preform 22 to the article 20. The first layer 24 of the preform 22 includes a nickel-based alloy. The second layer 26 of the preform 22 includes a nickel-based alloy and a second alloy. The second alloy is a transient liquid phase alloy. The first layer 24 of the preform 22 is between about 0.005 inch and about 0.015 inch in thickness. The second layer 26 of the preform 22 is between about 0.020 inch and about 0.030 inch in thickness. The joining step includes subjecting the article 20 and preform 22 to heat, the preform 22 melts to conform to the shape of the article 20. COPYRIGHT: (C)2005,JPO&NCIPI