公开(公告)号：CA1064733A

公开(公告)日：1979-10-23

申请号：CA242448

申请日：1975-12-23

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DUVALL DAVID S ,  OWCZARSKI WILLIAM A ,  PAULONIS DANIEL F ,  SCHAEFER ROBERT P

IPC: B22D19/10 ,  B22F1/00 ,  B23K20/00 ,  B23K35/02 ,  B23K35/22 ,  B23K35/24 ,  B23K35/30 ,  B23P6/00 ,  B23P6/04 ,  C22C1/04

Abstract: In filling voids in or between metallic articles, as in the repair of cracks or other surface defects in castings, the void is filled with a powder mix which upon heat treatment fills the void. The filler powder mix is a blend of at least two distinct powder components and in terms of overall composition preferably corresponds to that of article being repaired. The components comprising the mix are selected to provide a transient liquid phase and isothermal resolidification of a portion of the mix at the temperatute below the article melting point. A subsequent heat treatment is preferably utilized for homognization.

公开(公告)号：CA1109297A

公开(公告)日：1981-09-22

申请号：CA285086

申请日：1977-08-19

Applicant: UNITED TECHNOLOGIES CORP

Inventor： DUVALL DAVID S ,  KING WILLIAM H ,  OWCZARSKI WILLIAM A

IPC: C22C19/05 ,  B23K35/30 ,  C22C30/00

Abstract: A class of age hardenable nickel base alloys for use as filler wires in fusion welding superalloys is described. The alloys contain manganese in levels of from about .5 to 3 percent to greatly reduce the incidence of heat-affected zone cracking in the metal being welded. The weld filler alloys also contain significant amounts of aluminum, titanium, tantalum, and columbium, and therefore the resultant welds can be age hardened to relatively high strength levels. Method for reducing cracking during fusion welding using above alloys are also disclosed.